CA2265644C - Lubricants for conveyor belt installations in the food industry - Google Patents

Abstract

A lubricant concentrate is disclosed, of which the aqueous use solution is suited for lubricating, cleaning and disinfecting of feed and conveyance installations in the food industry, particularly by means of immersion or automatic belt lubricating installations, which is characterized by a content of the following components in combinations: ( i) one or more amines; (ii) one or more ether carboxylic acid compounds; (iii) one or more polyethyleneglycol (PEGs), whereby the portion of the compounds (i) + (ii) + (iii) with respect to the concentrate is 1 to 100 wt.%, and said concentrate optionally contains (iv) up to 99 wt.% (w/wt) of the usual aids and additives.

Description

W0 98/ 16603101520253035CA 02265644 l999-03- l2PCT/EP97/05712Lubricants for conveyor belt installations in the foodindustry.Field of the inventionThe present invention relates to a lubricant concentrate,of which the aqueous use solution is suitable forlubricating, cleaning and disinfecting of conveyor beltinstallations in the food industry, particularly by meansof immersion or automatic belt lubricating systems.The invention further relates to a process for theproduction of the lubricant concentrate or the aqueous usesolution of the lubricant concentrate as well as the useof the lubricant concentrate and the aqueous use solutionfor lubricating, cleaning and disinfecting of conveyer beltinstallations, in particular by means of immersionlubricating or.automatic belt lubricating installations,,particularly in the food industry. The use therebyparticularly relates to the filling up with foods,especially with beverages, of glass and plastic bottles,boxes, glasses, vessels,beverage containers, paper andcardboard holders and the like.Background of the inventionThe object of the invention is a process for the conveyanceof beverage packings made of metal, glass, paper, cardboardand/or plastic, particularly in this case polyethyleneterephthalate or polycarbonate, whereby the lubricantconcentrate according to the invention, respectively itsaqueous use solution, is applied.Presently beverages are being sold in several differentcontainers. Thus, beverages are offered in glass bottles,CONHRMAWONCOPYWO 98/166031015202530CA 02265644 l999-03- l2PCT/EP97/05712plastic bottles, plastic containers, boxes, wax cartons,etc. In the filling works these containers have to betransported during filling to several stations. Generallythis occurs by means of feed or conveyance installations,which usually consist of stainless steel, insofar as thesecontainers concern glass containers or consist of plasticmaterials like polypropylene or certain polyacetates,insofar as these containers concern other than glassbottles or glass containers. Following hereafter, suchinstallations are referred to as feed and conveyanceinstallations.During filling and transport of the mentioned containerssometimes a turning over or a blocking of the containersmay occur, while the conveyor belts are running furtherwithout hindrance. Especially in this case a sufficientlubrication of the conveyor belts is required in order thatthe belt can move forward without hindrance even when thecontainers on the belt cannot move forward during sometime.For this purpose it is required, as already mentionedbefore, to lubricate and to clean the parts of the feed andconveyance installations, which come into Contact with thebeverage containers, sufficiently. If the conveyanceinstallations are not lubricated sufficiently this can, onthe one hand, lead to the falling down of the containers,or on the other hand, have the result that they do notstop, although the respective filling up, cleaning orlabelling station has already been reached. Both kinds ofmalfunctions can lead to longer standing times of theconveyance installations and to considerable loss ofcapacity.W0 98/16603101520253035CA 02265644 l999-03- l2PCT/EP97/05712It should also particularly be watched in the food industrythat, besides the lubricating and cleaning action, thechain lubricating means have a sufficiently disinfecting,especially biostatic, action. In principle it should bedecided that germ promoting use solutions of lubricant con-centrates should not be used.Presently the applied chain lubricants can in principle bedivided into three main groups:1. Lubricants on basis of soap,2. Lubricants on basis of fatty amines and3. Lubricants on basis of phosphate esters.Although lubricants on basis of soap and namely in theimmersionthelubrication can be applied relatively trouble-free, use of lubricants on basis of soap with thepresently common centralized lubrication systems causes anumber ofhas to bedisadvantages; For example only the disadvantagementioned that such chain lubricants based onsoap are more sensitive towards water hardness, so thatthey cannot be applied without the use of a complexingagent like e.g. ethylene diamine tetra—acetic acid (EDTA),which can partly mask the hardness of the water. However itis just EDTA, as well as other possible complexing agents,which should be avoided on ground of their ecologicaldisadvantages (relatively difficult degradability inbiological purification systems). Similar disadvantagesare also shown by use solutions of chain lubricants whichare composed on basis of phosphate ester. Thereforepresently lubricant concentrates on basis of fatty aminesare being applied more and more.WO 98/16603101520253035CA 02265644 l999-03- l2PCT/EP97/05712The following publications are mentioned with respect tothe specific state of the art as regards lubricantconcentrates on basis of fatty amines:D1 = DE 36 31 953 Al;D2 = EP 0 372628Bl;D3 = EP 0 8384128281;D4 = WO 94/03562;andD5 = WO 95/19412.A process is disclosed in D1 for the maintenance of chainshaped bottle conveyors in beverage filling works,especially in breweries, in which the chain shaped bottleconveyors are lubricated with conveyor lubricants on basisof neutralized primary fatty amines and are cleaned withcationic cleaning agents or organic acids. In the processknown from D1, conveyor lubricants on basis of neutralizedprimary fatty amines are used, which preferably show 12 to18 C—atoms and have an unsaturated content of more than10%.The application of an aqueous lubricant solution is knownfrom D2, (A) 0.001 to 1 wt. %basis of the weight of the aqueous lubricant solution of atwhich solution consists of onleast one compound with the formula1 l‘N — Al — coonR2 R2wherein R1 is a saturated or an unsaturated, branched orlinear alkyl group with 8 to 22 carbon atoms,R2 is hydrogen, an alkyl group or hydroxy1—alkyl group with1 to 4 carbon atoms or - A - NH2, WO 98/16603101520253035CA 02265644 l999-03- l2PCT/EP97/05712A is a linear or branched alkyl group with 1 to 8 carbonatoms and Al is a linear or branched alkylene group with 2to 4 carbon atoms,which has a pH—value of 5 to 8, for the lubrication ofconveyor belts.Both the lubricants known from D1 and D2 generally have apoor water hardness tolerance. I.e. they tend to react withcompounds in the water, particularly with sulphates,bicarbonates, phosphates and carbonates, especially inalkaline water, as well as with other compounds which arepresent in the water, whereby the reaction products couldlead to the development of waste, which block the dosinginstallation. This leads to the feared "nozzle—blocking" ofsieves and spray nozzles of the dosing installation.Moreover, the lubricants on basis of fatty amines also haveun unsatisfactory foam behaviour. Thus, the lubricantsaccording to D2 tend to have an intensive foam formation,which requires afterwards a cleaning of the goods conveyedon the conveyor belt. Other lubricants, like e.g. thecomposition known from D1, rather tend to a too lowformation of foam, which leads to a too fast disappearingof the applied lubricating layer.It is known from D3 that the application of secondary and /or tertiary amines and / or salts of such amines, wherebythe applied compounds essentially are analogous to theamines known from D2, in quantities of 1 to 100 wt. %, ifso desired together with the usual diluents, aids oradditives, serve as chain lubricants for automatic chainand conveyor belt lubricating installations in the foodindustry, for the conveyance of plastic objects made ofpolyethylene terephthalate or polycarbonate. The lubricantcompositions known from D3 should not cause stress ruptureW0 98/16603101520253035CA 02265644 l999-03- l2PCTIEP97/05712corrosion thereby, in contrast to standard soap products,when applied with plastic objects, whereby the compositionsdisclosed according to D3 are particularly suitable for PETand PC—objects. Nevertheless, the lubricant systems knownfrom D3 further exhibit the same disadvantages, which arementioned above with respect to the lubricants known fromD2.D3 is on the one hand the strong water dependence and onI.e. the main disadvantage of the lubricants known fromthe other hand the regularly required system cleaning,which likewise is determined by the kind of compounds inthe water. The waste products which are occurring'therebyhave to be removed. When using lubricants on basis of fattyamines, organic or inorganic acids are applied thereby ascleaner.In D4 only lubricant concentrates are disclosed on basis offatty amines and possibly the usual diluents or aids, resp.additives, which are characterized that the compositioncontains at least one polyamine derivative of a fatty amineand / or a salt of such an amine, whereby the contributionof the polyamine derivative of the fatty amine to the totalAlthough the lubricantsknown from D4 show a better ‘clear water solubility‘, ascomposition is 1 to 100 wt. %.well as a more favourable foam behaviour, in comparisonalso thelubricants known from D4 are possessing certain disad—with the lubricants known from D2 or D3,vantages. These include among others a lackingbiodegradability. Up to now it has not been possible tobiodegrade chain lubricants based on amines in anaerobicpurification installations.Moreover, the compositions described in D4 are detrimentalin anaerobic purification installations because of therelatively high use concentration of polyamines.W0 98/16603101520253035CA 02265644 l999-03- l2PCT/EP97/05712Nevertheless, its use concentration cannot be lowered justlike that, without reducing on the one hand themicrobiocide effectiveness to an undesired level, or on theother hand to cancel out the necessary lubricating action.It is possible that an undesired gap of the lubricatingfilm will occur at lower concentrations.Finally, D5 enriches the state of the art with lubricantscontaining imidazoline, salts of it or amide, which canoccur as intermediate products during the synthesis ofimidazoline or as reduction products during the hydrolysisof imidazoline. Although the lubricant concentrates onbasis of imidazoline known from D5, respectively itsaqueous use solutions, as regards a biocide effect and alsoas regards a lubricating effect, can completely meet therequirements for appropriate means in the food industrywith respect to lubricating, cleaning and disinfecting offeed and conveyance installations, the imidazolines alsoshow certain disadvantages. Thus, under the ecologicalpoints of View which have to be taken into considerationnowadays, a biological tolerance and degradability of thelubricant concentrates applied for example in the beveragefilling works, which end up in the biological purification,is absolutely necessary. I.e. in accordance with eachpurification system both an aerobic and an anaerobicdegradability in the biological purification installationshould be possible. Although this requirement is bettermet by the chain lubricants based on the imidazoline knownfrom D5 as is the case with some of the chain lubricantsbased on amine known from D2, D3 or D4, the degradabilityof the chain lubricants over the whole line needimprovement.Moreover, the chain lubricants according to D3, D4 and alsothe lubricants according to D5 show a so—called lubricatingW0 98/ 16603101520253035CA 02265644 l999-03- l2PCT/EP97/05712gap. I.e. the gliding properties in soft water arerelatively limited. This means that the friction values insoft water are relatively high. Thus, the known chainlubricants also need to be improved with respect to thelubrication gap.Although other chain lubricants are known in the state ofthe art which do not show some of the above indicateddisadvantages, however none of the presently known chainlubricants is in the position to fulfil all requirementslike water hardness tolerance, aerobic and anaerobic degra-dability, as well as avoidance of the lubrication gap, tothe same extend.Thus,458 which practically are free of fatty acid soaps andlubricant compositions are described in EP—A—O 044which contain further a carboxylated, non—ionic tenside andan acylsarcosinate. The pH—value of these products is,between 7 and 11 and preferably is within the neutral up tothe alkaline range.DE—A-38 31 448 concerns aqueous soap—free lubricantcompositions which are ‘clear water soluble‘, a process forthe preparation of these and the use of these lubricantcompositions, in particular as lubricants for steel plateconveyors, for the conveyance of glass bottles or poly-ethylene terephthalate bottles. The, essentially neutral,aqueous lubricant preparations (pH- values within the rangeof 6 to 8) contain alkylbenzolsulphonate, alkoxylatedalkanolphosphate and alkane carboxylic acids, possibly nextto the usual intermediate solutions, solvents, defoamingagents and disinfectants.Nevertheless also the mentioned amine-free products showcertain disadvantages, for example they are unfavourableW0 98/ 16603101520253035CA 02265644 l999-03- l2PC1VEP9%M57l2considered from a microbiological point of view, becausethey create excellent growth conditions for a micro-organism, they only have a limited cleaning power andfinally they also show a difficult controllable foambehaviour.Thus, in view of the above presented and discussed state ofthe art, it was also an object of the invention to place atthe disposal a lubricant concentrate which avoids as far aspossible the disadvantages of known lubricant preparationsaccording to the state of the art with respect to the waterhardness tolerance, the toxicity of the compounds in thelubricant as well as the friction values in soft water. Atthe same time the lubricant concentrate should display ahigh substantivity, i.e. an improvement of the moisteningpower, a lower friction value generally, a balanced foambehaviour, a good and ‘clear water solubility‘, a goodcleaning effect and an excellent biocide effect. Herein theconcept ‘clear water solubility‘ in water means theinsusceptibility of the lubricant components against anionsin natural waters, like sulphate, bicarbonate and the like.For example, if the ‘clear water solubility’ of a lubricantcomposition is not very marked, the composition could reactwith the compounds in the water during a longer standstillof the installation, for example during the course of aweekend. The resulting waste and turbidity in the usesolutions of the lubricants lead in the short or mediumterm to clogging up of the filters and nozzles of theconveyor lubricating systems.Definition of the inventionThe above mentioned as well as other not more explicitlymentioned tasks have been solved with a lubricantconcentrate of the kind as mentioned in the beginning whichW0 98/166031015202530CA 02265644 l999-03- l2PCT/EP97/0571210has the characteristics as are expressed in thecharacteristic part of claim 1.Advantageous implementations of the lubricant concentrateaccording to the invention are protected in the claimswhich refer back to claim 1. An aqueous use solution whichcan be obtained from the lubricant concentrate is subjectof claim 8, while processes for the preparation of theconcentrate as well as the use solution and the use ofthese substances and a process for the conveyance ofbeverage packings are subject of the other claims.Detailed description of the inventionThe lubricant concentrate according to the inventioncomprises the following components:(i)(ii) one or more ether carboxylic acid compounds with theone or more amines;general formula I1R — (0(CH2)m)nocH2coo'M* (I),whereinR1 is a saturated, linear or branched C1 — C22 alkyl rest,a mono or polyunsaturated, linear or branched, alkenyl oralkinyl rest with 2 to 22 carbon atoms or possibly a monoor poly C1 — C22 alkyl or C2 — C22 alkenyl or alkinylsubstituted aryl rest,m is 2 or 3,n is a positive number in the range of 1 to 30, andM is hydrogen or an alkali metal;(iii) is one or more polyethyleneglycol (PEG) with thegeneral formula IIW0 98/16603101520253035CA 02265644 l999-03- l2PCT/EP97/0571211H — (OCQI-14),, — OH (II),wherein n is a positive number between 5 and S 1,000,000;whereby the portion of the compounds (i) + (ii) + (iii) inrelation to the concentrate is 1 to 100 wt. %, and saidconcentrate optionally contains(iv) up to 99 wt. % (wt / wt) of the usual aids andadditives.As a consequence, it is possible to place at the disposal alubricant concentrate, which could not have been foreseenwithout anything further, which meets all requirementswhich a professional could pose with respect to a lubricantconcentrate to be applied in the food industry for thelubrication, cleaning and disinfecting of feed andconveyance installations. Particularly the combination ofamine, ether carboxylic acid and polyethyleneglycol are co-operating very advantageously, so that, because of thecommon application of the components contained in thelubricant concentrate according to the invention, the highamount of the relatively toxic amine compounds can belowered, so that the lubricant concentrate is biologicallycompatible as well as degradable and even so at the sametime can exert an adequate biocide action. It should beemphasized thereby that the lubricant concentratesaccording to the invention, respectively the use solutionsare degradable, aerobically as well as anaerobically.Moreover, the lubricant concentrates according to theinvention show relatively low friction values in softwater, so that the gliding properties in soft wateressentially are not reduced. Therefore a lubrication gap,which for example sometimes is present with amines, islacking completely. Finally, the lubricant concentratesW0 98/ 166031015202530CA 02265644 l999-03- l2PCT/EP97/0571212according to the invention possess an excellent hard waterin connection with hard water no wastethetolerance, i.e. alsoforming is occurring in the dosing installation;components contained in the lubricant concentrate accordingto the invention are all compatible with plastics, so thatthe concentrates according to the invention are extremelysuitable for the lubrication of feed and conveyanceinstallations which serve for the transport of PET or PC-objects; the lubricant concentrates according to theinvention also meet the requirements from a microbiologicalpoint of View as chain lubricants, in total show very lowfriction values and can also convince with respect to thesubstantivity. This means that very surprisingly thecontact of the lubricant with the feed and conveyor beltsof the feed and conveyance installations is better comparedwith the traditional lubricants, so that less substance isrequired to achieve the same lubricating effect. Thiscontributes towards a considerable reduction of the waterusage in a filling installation, so that not only less ofthe lubricant concentrate but also less water is used.Finally the compositions according to the invention show anoutstanding foam behaviour.thehigher mechanical action, even over long periods of time.Surprisingly it was found thatuse solutions stay absolutely free of foam, also at aLubricant concentrates according to the invention showthree essential and one optional components, whereby itshould be understood, that the essential components (i) to(iii) as well as the optional components (iv) could eachconsist of multiple components. The components (i) to (iv)are described individually following hereafter.,..........»...»......,.....................,i .. -,.W0 98/ 16603101520253035CA 02265644 l999-03- l2PCT/EP97/0571213The components (i):The lubricant concentrate according to the inventioncontains as component (i) essentially one or more amines.The term "amine", as used in the context of the invention,includes thereby in a broader context monoamine, polyamine,cyclic amidine as well as its hydrolysis products or non-cyclic synthesis pre—steps, oxalkylated amine and salts ofthe previously mentioned compounds.The monoamines which can be applied according to theinvention include, among others, primary, secondary andtertiary amines according to the general formulas III — V,R2—NH2 R2—N—R3 R2—N—R3H R4(III) I (IV) (V),wherein R2, R3 and R4 independently from each other are thesame or different and indicate C1 — C30 — alkyl, C5 — C30 -aryl, C2 - C30 — alkenyl or alkinyl, C3 — C30 — cycloalkyl,C5 — C30 — alkaryl or heteroaryl with 5 to 7 ring atoms,whereby the mentioned rest could indicate one or moreamine, imine, hydroxyl, halogen and / or carboxyl rests, aswell as salts of the compounds with the formula III - V.Two of the rests R2 to R4 could also be closed to form aring, so that cyclic amines, like e.g. pyridine, chinoline,isochinoline, piperazine, morpholine, etc., as well as itsC-alkyl derivatives.Preferred monoamine compounds are those according to thegeneral formula IV and V, as well as salts of thesecompounds, which correspond to the general formulas VI andVII,CA 02265644 l999-03- l2wo 98/16603 PCTlEP97l057121 4H H122-—N" R3 X" R2——N+—-—-—R3 x”5 l IH R4(VI) (VI I) ,wherein R2, R3 and R4 independently from each other are the10 same or different and indicate:1520253035a substituted or unsubstituted, linear or branched,saturated or mono or polyunsaturated alkyl rest with 6to 22 C~atoms, which as substituents can display atleast one amine, imine, hydroxyl, halogen and / orcarboxyl rest,a substituted or unsubstituted phenyl rest, which assubstituents can display at least one amine, imine,hydroxyl, halogen, carboxyl and / or a linear orbranched, saturated or mono or polyunsaturated alkylrest with 6 to 22 C-atoms, andas the anion X‘, all the customary rests, which arefamiliar to the professional, which originate frominorganic acids or organic acids and which do notinfluence the lubricant concentrate according to theinvention in a detrimental manner, for example do notresult in undesired turbidity or standstills, can beapplied.In the sense of the present invention such acids arepreferred of which the anion X‘ is chosen from thegroup: amidosulphonate, nitrate, halide,hydrogensulphate,sulphate, hydrogencarbonate, car-WO 98/166031O15202530CA 02265644 l999-03- l2PC1VEP9%M5712l5bonate, phosphate or R5—COO', whereby the rest R5indicates hydrogen, a substituted or unsubstituted,linear or branched alkyl rest with I to 20 C-atoms,whereby the substituents are chosen from one or morehydroxyl, amine, imine and / or carboxyl rests.Especially mentioned as examples for the organicanions X’ i of the type R5-COO" are:glycolate, oleate,glutamate.formate, acetate,lactate, gluconate, citrate andApplicable with special advantages are in particular suchmonoamines or salts of it which correspond to the generalformulas IV, V, VI and VII, wherein R2 is a saturated orunsaturated, branched or linear alkyl group with 8 to 22carbon atoms, R3 indicates A1-COOH, wherein A1 indicates alinear or branched alkenyl group with 2 to 4 carbon atomsand R4 indicates an alkyl group or hydroxyl—alkyl groupwith 1 to 4 carbon atoms:Polyamines which also could be applied according to theinvention as components (i) are those corresponding to thegeneral formula VIII,R8LR— (A N)n-—R9 (VIII),6\N/R7wherein R6, R7, R8 and R9 independently from each other arethe same or different and indicate:- hydrogen— a substituted or unsubstituted, linear or branchedalkyl rest with 1 to 22 C-atoms or a mono or polyun-WO 98/166031015202530CA 02265644 l999-03- l2PCTIEP97/0571216whichas substituents one or more hydroxyl,saturated alkenyl rest with 2 to 22 C-atoms,‘could displayhalogen and / or carboxyl rests,whichas substituents one or more amine,amine, imine,- a substituted or unsubstituted phenyl rest,could displayimine, hydroxyl,halogen, carboxyl and / or possiblyagain substituted, linear or branched, saturated ormono or polyunsaturated alkyl rest with 1 to 22 C~atoms,A28 carbon atoms,indicates a linear or branched alkylene group with 1 toandn is a positive integer number in the range of l to 30.Particularly preferred are polyamines with the generalformula VIII, whereinR7, R8 and R9 = hydrogenA2 = -(CH2)3-, andn = 1.Also the salts of those compounds which belong to thefollowing general formula can be applied advantageously,R6 -NH— (CH2) 3N"H3 x‘ R6—*NH2 — (CH2) 3N+H3 2x’(IX) (X),wherein R6 has the meaning as mentioned for the formula VIIand X‘ the meaning as mentioned for the formulas VI andVII.Efficient polyamines can also be obtained according to thegeneral formula VIII, whereinW0 98/ 166031015202530CA 02265644 l999-03- l2PCT/EP97/05712176 . .R is a saturated or unsaturated, branched or linearalkyl group with 8 to 22 carbon atoms,R7 is hydrogen, an alkyl group of hydroxyl-alkyl groupwith l to 4 carbon atoms or A2—NH2,n = 1 and R8 and R9 indicate hydrogen.some individual examples of polymers which could be appliedaccording to the invention are among others ethylenediamine, diethylene triamine, triethylene tetra—amine,propylene diamine, dipropylene triamine, tripropylenetetra—amine, butylene diamine, aminoethyl propylenediamine, aminoethyl butylene diamine, tetramethylenediamine, hexamethylene diamine, N—cocos fatty—alkyl~l,3—diaminopropane, N-tallow fatty—alkyl—l,3-diaminopropane, N-oleyl—l,3—diaminopropane, N—lauryl—1,3-diaminopropane, eachtime in the'form of the free amine or in the form of thesalt like formate, acetate, oleate,glycolate, lactate,gluconate, citrate, glutamate, benzoate or salicylate.Next to it also polyamine derivatives of a fatty amineaccording to the general formula XI can be applied ascomponent (i) or as a constituent of the component (i) ofthe lubricant concentrate according to the invention,R2—A3- (CH2) k-NH- [ (CH2) l—NH]y- (CH2)m—NH2(H*x’)n (XI),wherebyR2 and X’ have the meaning as indicated for the formulas VIand VII,3A either indicates -NH- or —O~,CA 02265644 l999-03- l2wo 98/16603 PCT/EP97/0571218k, l, m independently from each other are the same or adifferent number in the range of 1 to 6,y indicates O, 1, 2 or 3 in case A3 = -NH- and5 1, 2, 3 or 4 in case A3 = -0-, andn is an integer in the range of O to 6.1015202530(XI)rest groups can be applied as substituents R2: n-hexyl, n-In the above mentioned general formula the followingheptyl, n—octyl, n—nonyl, n—decyl, n—undecyl, n~dodecyl, n-tridecyl, n—tetradecyl, n—pentadecyl, n—hexadecyl, n-heptadecyl, n—octadecyl, n—nonadecyl, n-eicosyl, n-uneicosyl and n—docosyl as well as the branched—chainisomers of the mentioned alkyl rests. Instead of thesaturated alkyl rest R2 can also indicate the corresponding— mono or poly - unsaturated alkyl rest, which can also belinear or branched. The above indicated rests can also besubstituted, whereby as substituents one or more amine,imine, hydroxyl, halogen or carboxyl group can be used.Moreover, the rest R2 also can indicate a phenyl rest,which can also be substituted with one or more amine,imine, hydroxyl, halogen or carboxyl group. Alsoalkylphenyl rests can be used for R2 whereby the alkyl restcontains 6 to 22 C—atoms and which can also be linear orIn allcases chlorine and bromine are preferred as halogenbranched, saturated or mono or polyunsaturated.substituents.According to the present invention also lubricantconcentrates are preferred which contain as component (i)(i)according to the general formula XI, whereby A3 =or as a constituent of component at least a polyamine-NH-, k,l and m are independently from each other 3 or 4, y is O orW0 98/ 166031015202530CA 02265644 l999-03- l2PCT/EP97/05712191 and the other variables have the meanings as areindicated before for the formula (XI).Especially preferred thereby are all the amines wherein k,l and m is 3.Polyamines which correspond‘to the previously indicatedgeneral formula XI can be prepared according to processesas are known from literature and further are also offeredto some extend as commercial products by the company BerolNobel, Stockholm, Sweden, under the denomination Amine 640,Amine 660, Amine 740, Amine 760 and Amine 780.According to another preferred implementation of thepresent invention the lubricant concentrates in thecomponents (i) contain one or more polyamine derivatives offatty amines of the previously mentioned general formula.(XI), wherebyvR2 indicates a linear or branched, saturated or mono orpolyunsaturated alkyl rest with 12 to 18 C-atoms,A3 indicates —NH— andX’ indicates the rest R5—COO—, whereby R5 indicateshydrogen, CH3-, HO—CH2— or CH3—CH(OH)—.Also applicable as components (i) according to theinvention with good results is cyclic amidine, for exampleimidazoline or tetrahydropyrimidine, etc., according to thegeneral formula XII,CA 02265644 l999-03- 12W0 98/ 16603 PCTIEP97/0571220R” / (xxx),5 |—A4wherein10 Z is an alkyl group with 1 to 6 C—atoms,A4 is hydrogen or —(A5NH)n—H,A5 is an alkylene group with 1 to 18 C—atoms, which15 possibly can be mono or polyunsaturated, andR10 is an alkyl, aryl, alkaryl, cycloalkyl, alkarylalkylor hetero-ring with — where possible and useful —respectively between 1 and 30 C—atoms.20Particularly advantageous mixtures are obtained accordingto the invention when the lubricant concentrate, or thecomponent (i), contains at least a compound correspondingto the general formula XIII,\CH/\ /131 n30 cH———-—— N (XIII),/ \R A-———Zwherein,W0 98/166031O1520253035CA 02265644 1999-03-12PCT/EP97/0571221ll 12 13R , R , R are the same or different hydrogen or A7 — Z2IA is a saturated or unsaturated, linear or branchedalkylene rest with 1 to 20 carbon atoms,A is a saturated or unsaturated, linear or branchedalkylene rest with 7 to 20 carbon atoms,Z3 is hydrogen, NH2, OH or COOMl,M1 is hydrogen or an alkali metal,1 . 2 14Z lS hydrogen, NH2, OH, COOM or —NH—CO—R ,M2 is the same or different from M1 hydrogen or an alkalimetal, andR14 is a saturated or unsaturated, linear or branchedalkyl group, respectively alkenyl group, with 6 to 20carbon atoms.with regard to the compounds according to the generalformula XIII preferably at least one of the rests R11, R12,R13, A6 and / or R14 contains a saturated or unsaturatedalkylene group with at least 12 C—atoms or a branchedalkylene group with at least 12 carbon atoms.Further, within the group of compounds according to thegeneral formula XIII, those compounds where A7 contains 12to 18 carbon atoms are particularly useful, it isparticularly preferred if A7 corresponds to a C17 restgroup. A6 preferably has 1 to 6 carbon atoms, veryfavourable is a —CH2—CH2- group. A very advantageousvariant of Z1 is NH2. Even more favourable properties haveCA 02265644 l999-03- 12W0 98/ 16603 PCT/EP97/0571222compounds according to the general formula XIII, or asconstituent of the component (i), wherein Z1 is NH2, R11and R12 is hydrogen, R13 is A7Z2, A7C17 and Z2 is hydrogen.5 The cyclic amidines which could be applied particularlyadvantageously as component (i) also include salts ofcompounds with the general formula XIII, which correspondto the general formula XIV:10 R N R +CL ;7ZL_____.N x‘ (XIV),15 / \lR CH3 A __.zwherein the rests R11, R12, R13, A6 and Z1 can take the20 meaning as shown by formula XIII, the CH3 — ringsubstituent is bound in the 1 or 3—position of theimidazoline ring and X" is a suitable anion, as for exampleis indicated in connection with the explanation of X‘ informula XI. It is particularly preferred if X" is CH3—O—25 so3-.In addition to the cyclic compounds of the formulas XIIIand XIV also linear amides with the general formula XV andXVI are suitable as component (i) or as constituent of the30 component,35CA 02265644 l999-03- 12W0 98/ 16603 PCT/EP97/0571223A6 — Z1R13 - C — N (XVI),5 I V \0 CH - CH — NH2R12 R1110 wherein the rests R11, R12, R13, A6 and Z1 have the meaning1520253035as is indicated for the formulas XIII or XIV.The compounds according to the formulas XV and XVI can alsobecome available as by-products during the synthesis of thecompounds XIII or XIV, they can also develop during thestorage of these compounds, for example by hydrolysis, oralso formed by means of direct synthesis without a detourvia a cyclic intermediate product.e.g.amine mentioned herein are also suitable, within the scopeOxalkylated amines, oxalkylated derivatives of theof the invention, as constituent of the component (i).The oxalkylated derivatives thereby show the group —(OA8)n-, which can be derived from any suitable a,B—alkyleneoXidewith the general formula XVII,R17R15R16 : C R18\/(XVII).whereinR15, R16, Rsame or different, hydrogen or a possibly substituted rest,alkyl,17 and R18 independently from each other are thelike e.g. cycloalkyl, aryl, etc.CA 02265644 l999-03- 12W0 98/16603 PCT/EP97/0571224Examples include among others ethyleneoxide,propyleneoxide, butyleneoxide, amyleneoxide, octyleneoxide,styroloxide, methylstyroloxide, cyclohexaneoxide (wherein5 R15 and R17 are forming a ring together), etc.; instead ofalkyleneoxide also alkylenecarbonate, e.g.ethylenecarbonate, propylenecarbonate, etc., can beapplied.10 -(OA8)n— meanshomo units like —(OEt)n—, —(OPr)n—, —(OBu)n—, —(O octyl)n-,etc.;block units like —(OEt)a(OPr)b—, —(OEt)a(OBu)b—, -15 (OPr)a(OEt)b(OPr)c,-(OEt)a(OPr)b(OBu)c, etc., wherein a + b + c = n;groups containing hetero units, which contain acoincidental statistical sequence of more than one oxide20 (OEt—OPr)n, (OPr—OBu)n, (OEt—OBu)n, whereby the proportionof one oxide to the other is e.g. 1 — 99 to 99 — 1;hetero — homo units like e.g.(EtO)a(EtO—PrO)b,25 (EtO)a(PrO)b(EtO-PrO)c,(EtO-PrO)a(BuO)b, etc.Especially preferred are compounds according to the generalformulas XVIII and XIX,30 A9HR19 - N (XVIII)\AloH35CA 02265644 l999-03- l2wo 98/16603 PCT/EP97/0571225/ A9HR19 - N - A12 - N (xxx),5 AllH \A1°HwhereinR19 is a linear or branched, saturated orunsaturated, alkylene rest with 8 to 22 carbon10 atoms,A12 is a linear or branched alkylene group with 8 to22 carbon atoms,are the same or different ethoxy or propoxygroups, whereby the total of the groups A9, A10,All is between 2 and 200.Useful compounds among others are:20 Cocos-bis(2—hydroxylethyl)amine, polyoxyethylene (5)cocos—amine, polyoxyethylene (15) cocos—amine,tallow—biS(2—hydroxylethylamine, polyoxyethylene(5)tallow—amine, tallow/oleyl-bis(2—hydroxylethylamine,oleyl—bis(2—hydroxylethyl)amine, polyoxyethylene (5)25 oleylamine, polyethylene (15) oleylamine, tallow-bis(2-hydroxylethyl)amine (hydrated), polyoxyethylene(5) tallow—amine (hydrated), polyoxyethylene (15)tallow—amine (hydrated), polyoxyethylene (50) tallow-amine, N,N'N'—tris(2-hydroxylethyl)N~ tallow — 1,3-30 diaminopropane, N,N',N'—polyoxyethylene (10)—N—tallow—l,3—diamino—propane, N,N',N'—polyoxyethylene (l5)-N-tallow—1,3—diaminopropane and poly oxyethylene (15)-tallow—amine.W0 98/16603101520CA 02265644 l999-03- l2PCTIEP97/0571226The component (ii)The lubricant concentrate according to the inventioncontains as further essential components one or more ethercarboxylic acid compounds with the general formula I,1R - (o(cH2),,,)nocH2coo'M*whereinR1 is a saturated, linear or branched alkyl rest with 1 to22 carbon atoms or a mono or polyunsaturated linear orbranched alkaryl or alkinyl rest with 2 to 22 carbon atomsor a possibly mono or poly C1—C22 alkyl or C2-C22 alkenyl oralkinyl substituted aryl rest,R is a positive number between 1 and 30, andM is hydrogen or an alkali metal.(I),which can be applied advantageously, can be mentioned amongAs ether carboxylic acids with the general formulaothers:CA 02265644 l999-03- 12W0 98/16603 PCT/EP97/0571227R1 n CTFA — nameLauryl 2.5 Laureth—4 carboxylic acidLauryl 3.8 Laureth—5 carboxylic acidLauryl 4.5 Laureth—6 carboxylic acidLauryl 10 Laureth—ll carboxylic acidLauryl 13 Laureth—14 carboxylic acidOleyl 5 Oleth—6 carboxylic acidOleyl 9 Oleth—1O carboxylic acidOctylphenol 8 Octoxynol—9 carboxylic acidOctylphenol 19 Octoxynol-20 carboxylic acidNorylphenol 0 Nonoxynol-carboxylic acidNorylphenol 7 Nonoxynol-8 carboxylic acidStearyl 6 Steareth-7 carboxylic acidStearyl 10 Steareth—ll carboxylic acidCetyl / Stearyl 6 Ceteareth—7 carboxylic acidLauryl 16 Laureth—17 carboxylic acidTallow 6 Talloweth-7 carboxylic acidW0 98/ 1660310l520253035CA 02265644 l999-03- l2PC1YEP9%M57l228Preferred compounds according to the general formula I arethose whereby R1 is a C3-C18— alkyl group or alkenyl group,n is between 2 and 9 and M is hydrogen, sodium orpotassium. Most preferred is when R1 is an oleyl group andn is 9.The ether carboxylic acids according to the general formulaI are available commercially or can be synthesizedaccording to processes known from the literature.For example, the compounds mentioned in the table can beobtained under the trade name AKYPO from the company CHEM—Yas special tenside.The component (iii):The lubricant concentrate according to the inventioncontains as further essential components one or morepolyethylene glycols with the general formula II,H — (OC2H4)n - OH (II),whereinn is a positive integer between 5 and > 100,000.(PEG's)advantageously according to the invention therefore have200 — 5,000,000 g/mol. ThePEG's concern non-unity substances from a molecular pointThe polyethylene glycols which could be usedmolecular masses of approx.of view, i.e. polymolecular compounds which consist ofcollectives of macro—molecules with different molecularmasses. These compounds are mostly prepared technically bymeans of alkaline catalyzed polyaddition of ethylene oxide(oxiran) in systems which mostly contain a low amount ofwater and with ethylene glycol as the starting molecule.WO 98/16603l01520253035CA 02265644 l999-03- l2PCT/EP97/0571229In order to characterize the types frequently the mainpoint of the molecular weight division is used in the art.Thus talked is about a PEG 200, PEG 400, PEG 1000, PEG10,000, etc.PEG's with molecular masses of < approx. 25,000 g/mol, i.e.n between approx. 5 and approx. 580 are preferred withinthe scope of the invention; these actual PEG's are liquidunder normal conditions of pressure and temperature andtherefore allow a very simple handling. Especially prefer-red are PEG's with n approximately between 8 and 13. Suchcompounds can be obtained for example under the trade name"Plurol" from the company BASF.The component (iv):The component (iv) is optional and therefore only possiblycontained in the lubricant concentrate according to theinvention.The compounds which can be applied within the scope of theinvention as component (iv) include among others water and/ or acids. The added water may be soft water, hard wateror softened water. For the acids all the suitable inorganicor organic acids can be used which, on the one hand, canadjust the pH—value to the desired value and, on the otherhand, can improve the solubility of different amines inwater. For example, when imidazoline derivatives accordingto the formulas XII, XIV, XV and / or XVI are used, it willbe preferred that organic acids are used as a constituentof the component (iv), to neutralize the lubricantconcentrate and to improve the solubility of the component(i). Organic acids are preferred thereby, because theformed salts with imidazolines or its derivatives whenW0 98/16603101520253035CA 02265644 l999-03- l2PCT/EP97/0571230inorganic salts are used are less soluble in water than thesalts of the organic acids. Thereby also the length of theusedthecarbon chain of the organic acids which preferably areis of some importance. The water hardness tolerance oflubricant concentrate decreases with increasing chainlengths of the acids. Organic acids with chain lengths upto 6 C—atoms are preferred thereby. When the molecularframe of the organic acids contains more than 8 carbonatoms it will be possible that the composition becomesunstable in hard water. Therefore, organic acids withlonger chains for improving the solubility should be(i)before andavoided in relation to imidazoline as component in hardwater. With the term “soft water" is meant,following, water with a hardness of <7°d, which correspondsto a carbonate content of <1.3 mmol/l. The higher degrees14° = 1.3 — 2.514 — 21° = 2.5 — 3.8 mmol/l; very hardof hardness (medium hardness of water = 7 -mmol/l;water =hard water => 21° = > 3.8 mmol/l are referred to within thecontext of the invention as "hard water".Mostly the following aids and or additives qualify besideswater and / or acids as component (iv):solution intermediates, for example alcohols, polyalcohols,ether or polyether, especially isopropanol, butylglycol,butyldiglycol or ethyleneglycolether;The amount of the solution intermediates to be used shouldbe determined according to the individual amine to used,the professional will calculate the required solutionintermediate in the individual case by means of trial anderror. In general additions of solution intermediates inthe range of 5 to 20 wt. %, calculated on basis of thetotal composition, will be sufficient.W0 98/16603101520253035CA 02265644 l999-03- l2PCTIEP97/0571231Further, as aid and / or additives according to the presentinvention particularly non-ionic and / or amphoterictensides merit consideration, for example fatty alcoholsand alkoxylated fatty alcohols. These tensides can improvethe moistening of the chain and conveyor belts insofar asthis is required in an individual case. In general tensideadditions in the range of l‘to 5 wt. %, calculated on basisof the total composition are sufficient for this purpose.Further additives include anti foaming agents, foamregulators, foam stabilizers, moistening agents, couplingagents, chelation agents or chelate formers or solubilityimprovers, biocides, like e.g. bactericides, corrosioninhibitors, pH-buffers, as well as combinations ofrepresentatives of the previously mentioned classes ofsubstances.Although the favourable effects according to the inventioncan already be realized with arbitrary proportions of the(i) toaccording to the invention shows exceptionally favourablecomponents the lubricant concentrate(iii),effects when the components (i)0.5 tol 2,of the weight of all the components (i) as well as (ii).(ii) are present in aproportion of 1 always calculated on basisEspecially preferred is also a concentrate which ischaracterized that the components (i)0.75 to 1 3,of the weight of all the components (i) as well as (iii).(iii) are presentin a proportion of 1 calculated on basisAs long as the proportion of amine to ether carboxylic acidto polyethylene glycol is within the mentioned range,excellent clear solubility will be obtained in an aqueousmedium as well as an excellent gliding property and at theW0 98/ 16603101520253035CA 02265644 l999-03- l2PCT/EP97/0571232same time a considerably lower toxicity will be achievedcompared to compositions without the addition ofpolyethylene glycol and ether carboxylic acids.The lubricant concentrate according to the invention(i)(wt / wt),is already clearly less than is the case withcontains the amine component as a rule in an amountbetween 0.5 and 6 wt. % whereby the amount of 6wt. %comparable concentrates which are known from the art. The(i)6 in a preferred version of the lubricant concentrateamine component is present in an amount of 1.0 to 4 wt.according to the invention,% (wt / wt)than 4 wt. %whereby amounts of 2 to 2.5 wt.are especially preferred. With contents of morealready disadvantages develop with respect towhile values of > 6 wt. 6If thethe water hardness tolerance,cannot be tolerated according to the invention.(i)calculated on basis of the total amount ofcontent of the amine component is reduced to a valuebelow 1 wt. %,the lubricant concentrate, then the gliding effect of theIf thegets below 0.5 wt. % thenlubricant concentrate will deteriorate increasingly.content of amine component (i)the friction value increases to such an extent that thelubricant concentrate does not lubricate sufficientlyanymore.The ether carboxylic acid (component ii) is contained inthe lubricant concentrate according to the inventiongenerally in an amount of 1 to 6 wt. %. A value of 1.5 to 4it has been shown that a value of 2 towt. % is preferred;2.5 wt. % of ether carboxylic acids in the lubricantconcentrate according to the invention is very favourably.The indicated amounts thereby relate to weight % (wt /wt).The foam behaviour of the lubricant concentrate getsunfavourable if the amount of the ether carboxylic acidsCA 02265644 l999-03- 12W0 98/16603 PCT/EP97/0571233decreases to below 1 wt. %. Furthermore, the turbidityincreases. If the amount of ether carboxylic acidsincreases to above 6 % then additional positive effectscannot be recognized anymore.The component (iii) generally is present in the lubricantconcentrate according to the invention in an amount between1.0 and 9 wt.% Amounts of 1.5 to 6 wt. % are preferred,particularly preferred are values of 3 to 4 wt. % (wt /10 wt). If the content of polyethylene glycol in the lubricantconcentrate is below 1.5 wt. % then the concentrate willnot possess the available water hardness toleranceaccording to the invention anymore. Furthermore, theturbidity of the concentrate will increase. The friction15 value of the lubricant concentrate according to theinvention increases to an unacceptable value if the con-centration is more than 9 wt. %.In a preferred implementation the concentrate according to20 the invention is characterized by up to 6 wt. % (i), 1 to 6wt. % (ii), 1.5 to 9 wt. % (iii) and 79 to 96.5 wt. % (iv),whereby all weight percentages are chosen such that a 100 %(wt / wt) concentrate will be obtained.25 In a particularly efficient version the concentrateaccording to the invention shows the following contents:(i) 2 to 2.5 wt. %,(ii) 2 to 2.5 wt. %,30 (iii) 3 to 4 wt. % and(iv) 91 to 93 wt. %, whereby the amounts (i) — (iv) arechosen such that the total results in 100 wt. °.o\Furthermore, the invention relates to a process for the35 preparation of the lubricant according to the invention.CA 02265644 l999-03- 12W0 98/ 16603 PCT/EP97/0571234This is produced by mixing of the components (i), (ii) and(iii), possibly with addition of the component (iv). Wateris preferred as component (iv) thereby. Therefore, subjectof the invention is a process for the preparation of a5 lubricant concentrate by means of mixing of the components(i) to (iii) and dilution of the mixture obtained in thisway with water, as a component (iv) and possibly additionof further components (iv).10 The present invention further relates to the use oflubricant concentrates according to the art describedbefore as chain lubricant in the food industry,particularly for the lubricating, cleaning and disinfectingof feed and conveyance installation in the food industry,15 particularly automatic chain and belt lubricationinstallations. The present invention particularly relatesto the use of the lubricant concentrates described before.in the form of a 0.01 to 50 wt. %, preferably 0.1 to 0.5wt. %, aqueous solution as chain lubricant for automatic20 chain and belt lubricating installations.Moreover, the invention relates to an aqueous use solutionfor lubricating, cleaning and disinfecting of feed andconveyance installations in the food industry, which is25 characterized by a content of the following components incombinations:(i) one or more amines;(ii) one or more ether carboxylic acid compounds with the30 general formula IR1 — (o(cH2)m)nocH2coo‘M* (I),whereinR1 is a saturated, linear or branched C1 — C22 alkyl rest,35 a mono or polyunsaturated, linear or branched, alkenyl orW0 98/ 16603l01520253035CA 02265644 l999-03- l2PCT/EP97/0571235alkinyl rest with 2 to 22 carbon atoms or possibly a monoor poly C1 — C22 alkyl or C2 - C22 alkenyl or alkinylsubstituted aryl rest,m is 2 or 3,n is a positive number in the range of 1 to 30, andM is hydrogen or an alkali metal;(iii) is one or more polyethyleneglycol (PEG) with thegeneral formula IIH - (OC2H4)n — OHwherein n is a positive number between 5 and $100,000;whereby the portion of the compounds (i) + (ii) + (iii)with respect to the concentrate is l to 100 wt. %, and thispossibly(iv) contains up to 99 wt. % (wt / wt) of the usual aidsand additives.According to the invention this lubricant solution (aqueoususe solution) can be obtained from the lubricantconcentrate according to the invention by means of dilutionwith water and a dilution factor of 2 to 10,000, preferablywith a factor 300 to 500. It is particularly preferredthereby to dilute the concentrate with water to 0.02 to 80O1 (volume / volume).Particularly preferred are lubricant solutions which show acontent of 0.002 to 0.1 wt. % in particular 0.003 to 0.05of an amine derivative (component i)of between 5 and 8.wt. % and a pH—valueW0 98/ 166031015202530CA 02265644 l999-03- l2PCT/EP97/0571236Finally, the present invention relates to the use of theaqueous use solution described before as a chain glidingand lubricating means suitable for lubricating, cleaningand disinfecting of feed and conveyance installations, inparticular by means of immersion and / or automatic beltlubricating installations, in the food industry. Theproducts according to the invention do not cause stressrupture corrosion, in contrast to standard soap products,when applied with plastic objects, and therefore can beapplied in particular without problems for PET or PC-objects. Accordingly, the lubricant solutions according tothe invention can find use as chain lubricant for the feedor conveyance of objects or bottles made of glass, glasscovered with a plastic layer, plastics, in particularpolyethyleneterephthalate, polycarbonate orpolyvinylchloride, tin plate or aluminium, respectivelyvarnished or plastic—layered containers made of thesemetals.Therefore, the invention also relates to a process for theconveyance of beverage packings made of metal, glass,paper, cardboard and / or plastic, whereby a beverageconveyance device is contacted with a lubricating, cleaningand disinfecting amount of an aqueous use solution, as isdefined herein.The products according to the invention show, compared toknown lubricants, a considerably better clear solubility inan aqueous medium as well as considerably better glidingproperties, whereby they exhibit at the same time aconsiderably lower toxicity as compositions withoutaddition of polyethylene glycol and ether carboxylic acids.Therewith, the desired technical properties of thelubricant concentrate, respectively the aqueous lubricantWO 98/16603101520253035CA 02265644 l999-03- l2PC1VEP9%m571237solution, can be adjusted purposefully by the choice of theamine, respectively the anion.The following examples and comparative examples serve topresent a more detailed explanation of the invention:The friction resistance, the foam behaviour and the clearsolubility in water of the combinations to be appliedaccording to the invention are presented by the examplesaccording to the invention B la to B 1c and B 5 to B 7. Theexamples B 5 and B 6 show the good micro—biocide action ofthe compositions to be applied according to the invention.The comparative examples V 2a to V 4, which mixtures relateto the state of the art, serve as comparison.I Methodsa.) Friction coefficientThe experiments for the measurement of the frictioncoefficient, hereafter indicated in short as "frictionValue", were performed on a University bottle conveyorunder the following conditions:Measurement of the friction value of 12 0.5 litre NRWbeer bottles, filled with water, as tension force,with a dynamometer (force reader box).Speed of the bottle conveyor: approx. 1 m / sec.Spraying of the bottle conveyor with a 0.3 % beltlubricating solution.Phase time: 20 sec. spraying / 20 sec. intervalSpraying performance per spray nozzle: 4 litre / hThe friction value "m" mentioned hereafter is definedas the quotient of the measured tension force for abottle in relation to the weight of the bottle ingrams.CA 02265644 l999-03- 12W0 98/16603 PCT/EP97l0571238Furthermore, the products were tested with hard water(16 °dH) according to the provisions of DIN 53 902 and5 b.)101520253035tested in completely desalinated water.Clear solubility:The compositions to be applied according to theinvention show an excellent clear water solubility,which can be shown by the performed turbiditymeasurements (nephelometer).Herewith, the regular removal of waste, which developsbecause of the reaction of "large anions", likewith the beltsulphate, phosphate and carbonate,lubricating solution, can be prevented.OFor this purpose 0.3 1 use solutions were measuredover a period of 48 hours (standing time over aweekend). These experiments were performed in theBerlin water works (water analysis in theinstallation). The clear solubility is expressed inFNU (formazine nephelometric units).0 to 1 FNU = clear1 to 10 FNU = weak opalescent10 to 50 FNU = turbidity50 to > 100 FNU = strongly turbidityFoam behaviourThe foam behaviour was calculated according to thefollowing method:100 ml of the use solution (0.3 %)into a 250 ml measuring cylinder. Thereafter it waswas transferredshaken 30 times during 30 seconds and after a further20 seconds the volume of the foam above the 100 mlmark was read off.W0 98/1660310152025 e.)30CA 02265644 l999-03- l2PCT/EP97l057l239Disinfection actionThe compositions to be applied according to theinvention show a remarkably good micro—biocide action,as can be shown by way of the performed quantitativesuspension tests with aid of the DVG (DeutscheVeterinarmedizinische Gesellschaft = German VeterinaryMedical Association).Method: Quantitative suspension test without load;according to the directives of the DVG.Testing temperature: 20 °CUse concentration: 0.3 %Reaction time: 10 min.aureus; DSM 799; KBE/ml = 3.0 x 107aeruginosa;DSM 939;KBE/ml=5.7 x 108cerevisiae;DSM l333;KBE/ml=l.5 x107Test germs: Staph.Pseud.Sacch.Material compatibility tests - beverage boxes:In these tests the compatibility of the beltlubricating solutions with the usual colours forprinting the beverage boxes was examined. For thispurpose, belt lubricating solutions were placed at thedisposal in which beverage boxes (manufacturer CocaCola Company) were immersed to about one third over a24 hours period. Thereafter, the boxes were rinsedwith fresh water and allowed to dry. The colourreleases were estimated Visually. As reference a boxW0 98/1660310152O2530f.)CA 02265644 l999-03- l2PCT/EP97l0571240was immersed for 24 hours in clean water and treatedin the same way as the test boxes.Material compatibility PETThe material compatibility of the mixture according tothe invention as well as a comparative example wasexamined in a test.For this, the following equipment was needed:Climatic test cabinet,(1.5 L)CO2—cylinder with fitting reducing valve,attachment for filling of the bottles with CO2,separate manometer for testing the bottles with regardCO CO2,‘in each case 20 new PET bottles in crates,The tests were executed in the following manner:At first, the bottles were filled with 1.5 L VE-water,thereafter 3.0 — 3.1 bar CO2 was led into the bottlesvia an attachment. Then the quantity of CO2 wasdissolved into the water by means of shaking. All CO2was considered to be dissolved only after the testmanometer indicated 0 bar.1.) The bottles were now dipped shortly intoconcentrated belt lubricant (BSM) (" 2 cm) andthereafter allowed to stand for 24 hours.2.) Thereafter the bottles were filled in crates andallowed to stand in a climatic cabinet at 38 °Cand 85 % relative humidity for 6 days.W0 98/166031015II.CA 02265644 l999-03- l2PCTIEP97/0571241As reference a bottle was taken along in each cratewhich was not dipped into BDM.At the end of the test a Visual estimation was made.Here, 5 categories are distinguished.O: No damagesA: Minor damagesB: Moderate, superficial cracksC: Multiple, moderately deep cracksD: Multiple, deep cracksThe summary of(B) and in thein Table 1.the applied lubricants in the examplescomparative examples (V) are presentedCA 02265644 l999-03- l2wo 93/15503 PCT/EP97/0571242Table 1Example N—octyldecenyl- alkyl (poly-1- polyethylene-propylene oxa-propylene)- glycol (200)diamine (i) oxa—ethane car— (iii)boxylic acid(ii)B1 a) 2 2 3Bl b) 2B1 c) 2V2 a) 2 0V2 b) 4 2V2 c) 0V3 a) 3V3 b) 3V3 C) 0 3V4 8 O 0B5 6 l 1B6 4 2 2B7 2 3 3B8 1 1.5 1.55 The listings of the ingredients are in weight per cent,whereby the compositions with acetic acid were adjusted toa pH—value of 6.0 and were filled up with VE—water to 100o\°10 Table 2 shows an overview of the performed examinations onthe individual examples and comparative examples a)15— f).CA 02265644 1999-03-12with respect to a)behaviour of 0.3 %table 3.friction coefficient and C)W0 98/ 16603 PCT/EP97/0571243Table 2Example Fric‘ Clear Foam Quanti— Material Materialtion solu~ behav— tative compati— Compati‘coeffi— bility iour Suspen_ bility bilitycient Sion boxes PETtesta) b) c) d) e) f)B1 a) + + + — — ~Bl b) + + + - + +B1 c) + + + — — -V2 a) + + + — — -V2 b) + + + — — -V2 C ) + + + — — -V3 a) + + + — — -V3 b) + + + + — -V3 c) + + + + - -V4 + + + + + +B5 + + + + - —B6 + + + + — —B7 + + + — — -III Resultsfoamuse solutions are presented inCA 02265644 l999-03- l2wo 98/16603 PCT/EP97/0571244Table 3Friction coefficients, Foam behaviour:Denomination Friction Friction Foamcoefficient coefficient behaviour[m] [m] [ml foamhard water soft water volume]B1 a) 0.103 0.101 20B1 b) 0.110 0.116 38B1 C) 0.104 0.106 50V2 a) 0.143 0.145 47V2 b) 0.142 0.149 47v2 c) 0.147 0.143 49V3 a) 0.153 0.142 60V3 b) 0.150 0.146 60V3 C) 0.157 0.143 63V4 0.140 0.133 58B5 0.124 0.119 30B6 0.112 0.102 25B7 0.101 0.095 25B8 0.118 0.110 18with respect to b) clear solubilityThe results of 0.3 % use solutions are presented inthe following table 4.CA 02265644 l999-03- 12WO 93/15503 PCT/EP97l057l245Table 4Friction coefficients, Foam behaviour:Denomination 0.25 h 24 h 48 hB1 a) 0.23 0.66 0.81B1 b) 0.61 4.33 6.18B1 C) 1.13 6.05 8.21V2 a) 0.42 0.83 1.01V2 b) 0.89 6.87 13.52V2 C) 1.25 51.7 94.1V3 a) 98.3 33.2 21.4V3 b) 324 98.1 64.2V3 C) 376 108 137.7V4 375 124.1 59.6B5 0.99 4.45 6.23B6 0.7 3.14 4.42B7 0.32 0.51 0.6B8 0.21 0.43 0.525Water analysis:conductivity mS/cm 1030pH value 6.510 m value mVal/l : 0.44Hardness °dH 28.6Chloride mg/1 94.0Nitrate mg/1 : 4.0Sulphate mg/l 398.015 Total inorg. P205 mg/l : 2.4with respect to d) microbiological tests (quantitativesuspension tests)20 Table 5 shows the results. CA 02265644 l999-03- 12WO 98/16603 PCTIEP97/0571246Table 5Test mix— Log. reduc— Log. reduction Log. reductiontures tion factor factor factorstaph. au— pseud. sacch. cere-reus aeruginosa visiaeV3 b) >6.l8 2.79 >4.89V3 C) 4.48 2.94 >4.89V4 >6.l8 2.95 >4.89B5 >6.l8 2.93 >4.89B6 4.48 2.21 >4.895 with respect to e) examination of colour release withCoca—cola boxes:I" As can be seen on the accompanying pictures, B lb)does not result in colour release; in contrast to V4,10 where this is clearly visible.with respect to f.) material compatibility to PETThe results of B1) is shown in table 6.CA 02265644 l999-03- 12W0 98/161503 PCT/EP97/0571247Table 6Belt lubricant B1 b)No. Stand—surface Radial—base LeakageO A B C D O B C D yes noI--'KDCO\10‘\U'14>-L»Jt\Jl-*‘AXXXXXXXXXX0EI-‘o><><!><2><1><€><><><><><o><><><><t><><><><.’><><1lP-‘5 The results of the comparative example V4 is shown in table7. ‘Table 710 Belt lubricant V4No. Stand—surface Radial—base LeakageO A B C D O A B C D yes no1 X X X2 X X X3 X X X4 X X X5 X X X6 X X X7 X X X8 X X X9 X X X10 X X XSW 5 5 5 5 10W0 98/ 16603101520IV.CA 02265644 l999-03- l2PCT/EP97/0571248SummaryThe values show that the compositions according to theinvention combine the advantages of soap—freelubricants, independence on water quality, cleaningand disinfection with those of the lubricants on basisof soap, biological degradability. The disadvantages,as the annoyingly strong foaming, the lacking glidingeffect in soft water, particularly the regular removalof precipitations, can be avoided by using thecompositions according to the invention.Moreover, the compositions to be applied according tothe invention do not cause stress rupture corrosionand therefore can be employed without problems for PETand PC objects (PET = polyethyleneterephthalate, PC =polycarbonate), furthermore the compositions to beapplied according to the invention do not cause anycolour release with printed beverage boxes in contrastto standard amine products.

Claims (13)

Claims:

1. Lubricant concentrate, of which the aqueous use solution is suited for lubricating, cleaning and disinfecting of feed and conveyance installations in the food industry, comprising:
(i) from about 0.5 to about 6 wt. % of at least one amine;
(ii) from about 1 to about 6 wt. % of an ether carboxylic acid compound with the general formula I
R1 - (O(CH2)m) n OCH2COO-M+ (I) wherein R1 is selected from the group consisting of a saturated, linear or branched C1 -C22 alkyl group, a mono or polyunsaturated, linear or branched, alkenyl or alkinyl group with 2 to 22 carbon atoms and a mono or poly C1 -C22 alkyl or C2 -C22 alkenyl or alkinyl substituted aryl group, m is 2 or 3, n is a positive number in the range of 1 to 30, and M is hydrogen or an alkali metal;
(iii) from about 1.5 to about 9 wt. % of a polyethyleneglycol with the general formula II

H - ( OC2H4) n - OH (II), wherein n is a positive number between 5 and less than 100,000;
(iv) up to 96.5 wt. % (wt / wt) of usual aids, additives, acids, or water.

2. Concentrate according to claim 1, with the characteristic that it contains the components (i): (ii) in a proportion of 1:0.5 to 1:2, always calculated on basis of the weight of all components (i) as well as (ii).

3. Concentrate according to claim 1 or claim 2, with the characteristic that it contains the components (i):
(iii) in a proportion of 1:0.75 to 1:3, always calculated on basis of the weight of all components (i) as well as (iii).

4. Concentrate according to claim 1, with the characteristic that it contains 79 - 96.5 wt. % of (iv), whereby all weight percentages are chosen such that 100%
concentrate (wt / wt) will be obtained.

5. Concentrate according to claim 4, characterized by the following composition comprising:
(i) 2-2.5 wt. %, (ii) 2-2.5 wt. %, (iii) 3-4 wt. % and (iv) 91-93 wt.
whereby the quantities of (i) - (iv) are chosen such that the total sum of it is 100 wt. %

6. Process for the preparation of a lubricant concentrate according to any one of claims 1 to 5 by means of mixing of the components (i) to (iii) and dilution of the mixture obtained in this way with water, as a component (iv), and possibly addition of further components (iv).

7. Use of the lubricant concentrate according to any one of claims 1 to 5 for lubricating, cleaning and disinfecting of feed and conveyance installations in the food industry.

8. Aqueous use solution for lubricating, cleaning and disinfecting of feed and conveyance installations in the food industry, obtained by dilution of the concentrate according to any one of claims 1 to 5 with water to 0.02 : 80 % (volume / volume).

9. Use of the aqueous use solution according to claim 8 for lubricating, cleaning and disinfecting of feed and conveyance installations, by means of immersion or automatic belt lubricating installations, in the food industry, for the conveyance of bottles made of glass or plastics line PET or PC.

10. Process for the conveyance of beverage packings made of at least one of metal, glass, paper, cardboard and plastic, whereby a beverage conveyance installation with a lubricating, cleaning and disinfecting amount of an aqueous use solution according to claim 8 is contacted.

11. An aqueous lubricant solution comprising a lubricant concentrate diluted with water by a factor of about 2 to about 10,000 on a volume basis, the concentrate comprising:
(i) from 0.5 to 6 wt. % of at least one amine;
(ii) from 1 to 6 wt. % of an ether carboxylic acid compound with the general formula I
R1 - (O (CH2) m,) nOCH2C00-M+ (I) wherein R1 is selected from the group consisting of a saturated, linear or branched C1 -C22 alkyl group, a mono or polyunsaturated, linear or branched, alkenyl or alkinyl group with 2 to 22 carbon atoms and a mono or poly C1 -C22 alkyl or C2 -C22 alkenyl or alkinyl substituted aryl group, m is 2 or 3, n is a positive number in the range of l to 30, and M is hydrogen or an alkali metal;
(iii) from 1.5 to 9 wt. % of a polyethyleneglycol with the general formula II

H - (OC2H4)n - OH (II), wherein n is a positive number in the range of 5 to less than 100,000;
(iv) from 79 to 96.5 wt. % of water.

12. The lubricant solution according to claim 11 wherein the dilution factor is from 300 to 500.

13. A process for the conveyance of beverage packagings selected from the group consisting of metal, glass, paper, cardboard and plastic, comprising contacting a beverage conveyance installation with a lubricating amount of an aqueous lubricant solution, the solution being formed by dilution of a lubricant concentrate with water by a factor of 2 to 10,000 on a volume basis, the concentrate comprising:
(i) from 0.5 to 6 wt. % of at least one amine;
(ii) from 1 to 6 wt. % of an ether carboxylic acid compound with the general formula I
R1 - (O(CH2)m) nOCH2C00-M+ (I) wherein R1 is selected from the group consisting of a saturated, linear or branched C1 -C22 alkyl group, a mono or polyunsaturated, linear or branched, alkenyl or alkinyl group with 2 to 22 carbon atoms and a mono or poly C1 -C22 alkyl or C2 -C22 alkenyl or alkinyl substituted aryl group, m is 2 or 3, n is a positive number in the range of 1 to 30, and M is hydrogen or an alkali metal;
(iii) from 1.5 to 9 wt. % of a polyethyleneglycol with the general formula II
H - (OC2H4)n - OH (II) , wherein n is a positive number in the range of 5 to less than 100,000;
(iv) from 79 to 96.5 wt. % of water.