|Publication number||US3361673 A|
|Publication date||Jan 2, 1968|
|Filing date||Aug 24, 1959|
|Priority date||Aug 24, 1959|
|Also published as||DE1444798A1, US3202678|
|Publication number||US 3361673 A, US 3361673A, US-A-3361673, US3361673 A, US3361673A|
|Inventors||Robert G Anderson, Alan Y Drummond, Frank A Stuart|
|Original Assignee||Chevron Res|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (3), Referenced by (177), Classifications (53) |
|External Links: USPTO, USPTO Assignment, Espacenet|
Lubricating oil compositions containing alkenyl succinimides of tetraethylene pentamine
US 3361673 A
United States Patent LUBRICATING GIL COMPOSITIONS CONTAENING ALKENYL SUCCINIMIDES 0F TETRAETHYL- ENE PENTAMINE Frank A. Stuart, Oriuda, Robert G. Anderson, Novato, and Alan Y. Drumrnond, Richmond, Calitl, assignors to Chevron Research Company, a corporation of Delaware No Drawing. Filed Aug. 24, 1959, Ser. No. 835,437
6 Claims. (Cl. 252-515) This invention pertains to lubricating oil compositions having incorporated therein metal-free detergents. These particular metal-free detergents are N-substituted polyamine alkenyl succinimides.
Alkenyl succinic anhydrides and numerous derivatives thereof are well known in the art. For example, alkenyl succinic anhydrides in which the alkenyl radical contains from to 20 carbon atoms are taught as corrosion inhibitors in lubricating oil compositions. Also, products obtained by reacting such alkenyl succinic acid anhydrides with monoamines are taught as ferrous corrosion inhibitors for lubricating oil compositions.
However, the above known alkenyl succinimides are not useful as detergents in lubricating oil compositions. In contrast thereto, the N-substituted polyamine alkenyl succinimides which are described herein are new compounds which are useful as detergents in lubricating oil compositions.
Present day internal combustion engines operate at high speeds and high compression ratios. When used in the so-called city stop-and-go driving, which includes the greater part of the driving condition for a large percentage of todays automobiles, the internal combustion engines do not reach the most efficient operating temperature. Under city driving conditions, large amounts of partial oxidation products are formed, and reach the crankcase of the engine by blowing past the piston rings. Most of these partial oxidation products are oil insoluble, tending to form deposits on the various operating parts of the engine, such as the pistons, piston rings, etc. For the purpose of preventing the deposition of these products on the various engine parts, it is necessary to incorporate detergents in the lubricating oil compositions, thus keeping these polymeric products highly dispersed in a condition unfavorable for deposition on metals.
For the most part, the various detergents which are added to crankcase oils to reduce this formation of sludges and varnishes are metal organic compounds, particularly those compounds wherein the metal is linked to an or ganic group through an oxygen atom. Although these metal-containing organic compounds have some etfectiveness as detergents for dispersing the precursors of deposits within the oil itself rather than permitting Patented Jan. 2, 1968 lubricating oil compositions which are compounded with a metal-free detergent.
Therefore, in accordance with this invention, it has been discovered that lubricating oil compositions particularly useful for heavy duty service are obtained by incorporating N-substituted monoalkenyl succini-rnides derived from tetraethylene pentamine in oils of lubricating viscosity.
By the use of lubricating oil compositions containing the N-substituted alkenyl succinimides described herein, diesel and gasoline engine parts remain remarkably free of deposits and varnish, even under severe operating conditions.
These new compounds, which are monoalkenyl succinimides of tetraethylene pentamine, have the formula:
wherein R is a hydrocarbon radical having a molecular Weight from about 400 to about 3000; that is, R is a hydrocarbon radical containing about 30 to about 200 carbon atoms.
These alkenyl succinimides of tetraethylene pentamine can be prepared by reacting maleic anhydride with an olefinic hydrocarbon, followed by reacting the resulting alkenyl succinic anhydride with tetraethylene pentamine. The R radical of the above formula, that is, the alkenyl radical, is derived from an olefin containing from 2 to 5 carbon atoms. Thus, the alkenyl radical is obtained by polymerizing an olefin containing from 2 to 5 carbon atoms to form a hydrocarbon having a molecular weight ranging from about 400 to about 3000, more preferably, 900 to 1200. Such olefins are exemplified by ethylene, propylene, l-butene, Z-butene, isobutene, and mixtures thereof. Since the methods of polymerizing the olefins to form polymers thereof is immaterial in the formation of the new compound described herein, any of the numerous processes available can be used therefor.
The preparation of N-substituted monoalkenyl succinimides derived from tetraethylene pentamine can be described generally by the following equations, using a polymer of isobutene as an example of the alkenyl radical: I 0
them to form added deposits on the engine parts, I they have the disadvantage of forming ash deposits in the C 3 engine. These ash deposits lower engine performance by CH:C fouling plugs and valves, and contributing to preignition. 11
CH3 CH3 CH3 0 l I CH3CCH2-OH?' CH=CCH2OHC\ GEM-CH2 CHa n /O NH:C2H4N /NH 011 -0 CH2-CH2 CH3 CH3 CH 0 I I GHaCCHz-CHCIJ OH=CCHCHC\ CHPCHQ CH3 /n /NCH2CH2N /NH CHz-O CHa-CH:
It is a particular object of this invention to provide wherein n has a value of about 7 to about 50.
The above reaction between a polyolefin and maleic anhydride is an uncatalyzed addition reaction which should not be confused with a copolymerization reaction such as that obtained with a vinyl monomer and maleic anhydride. While the general reaction of an olefin and maleic anhydride is well known for olefins of low molecular weight (e.g., olefins of 18 carbon atoms), no previous work has been done with maleic anhydride and the high molecular weight olefins as described herein.
The reaction set forth and described by Equation I hereinabove can proceed in a mol ratio of the polyolefin to the maleic anhydride of 1:1 to 1:10, preferably from 1:1 to 1:5. The reaction temperature can vary from 300 F. to 450 F. Because of the greater yield of products obtained thereby, it is preferred to use the high range of temperatures (e.g., 375 F. to 450 F.). In the second step of the reaction as exemplified by Equation II hereinabove, the yield of the imide is extremely high even though the reactants are used in equal molar ratios. This is surprising, since under the conditions of the reaction there is an excess of secondary amino groups over primary amino groups, and any reaction with the secondary amino groups would lead to amide formation; thus, preventing imide formation.
The reaction described by Equation 11 hereinabove can be made at 220 F. to 500 F., preferably from 300 F. to 400 F. The alkenyl succinic anhydride and the tetraethylene pentamine are reacted in about equal molar quantities.
Since the reaction between the polyolefin and maleic anhydride may not go to completion, the resulting alkenyl succinic anhydride may contain some unreacted polyolefin. As it may not be desirable to separate out this unreacted polyolefin at this stage, the resulting imide formed by reaction of the alkenyl succinic anhydride and the diamine will contain this polyolefin as an impurity which can be a diluent in the formation of lubricating oil compositions. However, if it is so desired, this unreacted polyolefin can be removed by precipitation, for example, by acetone or methanol from a hydrocarbon solution.
Lubricating oils which can be used as base oils include a wide variety of lubricating oils, such as naphthenic base, paraflin base, and mixed base lubricating oils, other hydrocarbon lubricants, e.-g., lubricating oils derived from coal products, and synthetic oils, e.g., alkylene polymers (such as polymers of propylene) butylene, etc., and the mixtures thereof), alkylene oxide-type polymers (e.g., propylene oxide polymers) and derivatives, including alkylene oxide polymers prepared by polymerizing the alkylene oxide in the presence of water or alcohols, e.g., ethyl alcohol, dicarboxylic acid esters (such as those which are prepared by esterifying such dicarboxylic acids as adipic acid, azelaic acid, suben'c acid, sebacic acid, salkanol succinic acid, fumaric acid, maleic acid, etc., with alohols such as butyl alcohol, hexyl alcohol, 2-ethyl hexyl alcohol, dodecyl alcohol, etc.), liquid esters of acids of phosphorus, alkyl benzenes (e.g., monoalkyl benzene such as dodecyl benzene, tetradecyl benzene, etc., and dialkyl benzenes (e.g., n-nonyl Z-ethyl hexyl benzene); polyphenyls (e.g., biphenyls and terphenyls), alkyl biphenyl ethers, polymers of silicon (e.g., tetraethyl silicate, tetraisopropyl silicates, tetra(4-methyl-2-tetraethyl) silicate, hexyl (4-methyl-2-pentoxy) disiloxane, poly(methyl) siloxane, poly(methylphenyl) siloxane, etc. Synthetic oils of the alkylene oxide-type polymers which may be used include those exemplified by the alkylene oxide polymers.
The above base oils may be used individually or in combinations thereof, wherever miscible or wherever made so by the use of mutual solvents.
The alkenyl succinimides of tetraalkylene pentamine can be used in oils of lubricating viscosity in amounts of 0.1% to 80%, by weight, preferably 0.25% to 5%, by weight.
The preparation of the alkenyl succinimides of tetraalkylene pent-amine is illustrated in the following examples.
Example I.-Preparati0n 0f polybutenyl succinic anhydride A mixture of 1000 grams (1 mol) of polybutene having a molecular weight of about 1000 and 98 grams (1 mol) of maleic anhydride was heated at 410 F. in a nitrogen atmosphere with agitation for a period of 24 hours. The reaction mixture was cooled to 150 F. and 700 cc. of hexane added; after which the mixture was filtered under vacuum. After vacuum distillation to remove the hexane from the filtrate, the product was maintained at 350 F. at an absolute pressure of 10 mm. Hg for one hour to remove traces of maleic anhydride. The crude polybutenyl succinic anhydride thus prepared had a saponification number of 79.
Example I1.Preparati0n of tetraethylenepentamine derivative 0 the polybutenyl succinic anhydride of Example l hereinabove A mixture of 84 grams (0.45 mol) of tetraethylene pentamine and 702 grams (0.45 mol) of the polybutenyl succinic anhydride of Example I hereinabove, was blended with agitation at 125 F. in a nitrogen atmosphere. The temperature was increased to 400 F. during a period of one hour, after which the absolute pressure was reduced to about 200 mm. Hg during a period of 30 minutes to facilitate the removal of water. The reaction mixture was then allowed to reach room temperature at this reduced pressure. The reaction product contained 5.1% nitrogen (theory=5.4%). Infra-red analysis showed that the reaction product was an imide containing a polybutene side chain.
As detergents for lubricating oil compositions, the compounds of this invention are more efiective than alkenyl succinimides having fewer nitrogen atoms in the amine portion of the molecule, and succinimides having less than 30 carbon atoms in the alkenyl radical. The use of amyl amine, for example, in place of tetraethylene pentamine in the preparation of the succinimide, results in a product which is ineffective as a detergent in lubricating oil compositions.
Table I hereinbelow presents data obtained with lubricating oil compositions containing N-substituted monoalkenyl succinimides derived from tetraethylene pentamine.
The monoalkenyl succinimide used was an N-substituted succinimide derived from tetraethylene pentamine Wherein the alkenyl radical had a molecular weight of about 1000, which alkenyl radical was a polymer of isobutene.
The tests were made in a Caterpillar L-l engine according to Supplement I conditions for a period of 120 hours as described in the Coordinating Research Council Handbook, January, 1946.
The PD Nos. refer to the piston discoloration rating. After the engine test, the three piston lands are examined visually. To a piston skirt which is completely black is assigned a PD number of 800; to one which is completely clean, a PD number of 0; to those intermediate between completely black and completely clean are assigned PD numbers intermediate in proportion to the extent and degree of darkening.
The G.D. Nos. refer to the percentage deposits in the piston ring grooves; and 0 evaluation being a clean groove; and a number of 100 being a groove full of deposits.
The base oils were California SAE 30 base oils.
The dithiophosphate was a zinc salt of a mixed dialkyl dithiophosphate wherein one of the alkyl radicals contained 4 carbon atoms and the other alkyl radical contained 5 carbon atoms. The dithiophosphate was present in the lubricating oil compositions in an amount of 18 millimols per kilogram (Le, 18 mm./kg.) of finished product, based on the metal content.
TABLE I A I B o D Additive:
Succiniuu'de, Wt. percent- 0.0 3. 2. 0 Dithiophosphate:
(1) ImJkg 0.0 0.0 18 18 (2) MIn./kg 0.0 0.0 Test Results:
G.D. No 2 39 4 21 1 P.D. N0 2 800, 800, 800 0, 0, O 600, 300, 200 40, 1, 5
1 An alkenyl succinimide of tetraethylene pentamine wherein the allrenyl radical has had a molecular weight of approximately 1,000, which alkenyl radical was a polymer of isooutene 2 These test results were obtained in a Caterpillar L-l test under the MIL-D2104 conditions. Thus, under the more severe supplement-l conditions, these G.D. N as. would be considerably higher.
The marked synergistic efiect obtained by the combina- T ABLE 1H tron of the N-substituted alkenyl succinimides of this invention and the dithiophosphates is particularly noted. I I l I K i L Table II hereinbelow presents data obtained in an FL-2 ti 0 Additive: test, usmg a 6 cylinder Chevrolet engine Opera 11,, fiat succinimide, Wt percent 3'0 3'0 3' 0 3 0 2500 r.p.m for a period of 40 hours, which test is in y Dithiopl1osphate,mm./kg 1s 18 18 18 described in a Coordmatmg Research Council. bulletm Test Results! -t it th Duration of Test (hours) 20 36 52 72 tled Research Technique for the Determination of e gearing Weight 133 133 206 240 Efiects of Fuels and Lubricants on the Formation of De- Plston Varnish Refine posits During Moderate Temperature Operation. (1948).
The piston varnish rating is a visual observation of the amount of varnish on a piston skirt, with 10 being the maximum rating for a perfectly clean piston and a 0 being the rating of a piston fully covered with black varnish. This piston varnish rating correlates with road performance in automobiles.
The total rating is the overall deposit rating of the engine. The rating values range from 0, the poorest value, to 100, the top value. These figures indicate the percentage rating for the engine.
The base oil was an SAE base oil.
The succinimide and the dithiophosphate were the same as those described for Table I hereinabove.
It is readily seen from the data set forth hereinabove in Tables I and II that lubricating oil compositions containing the alkenyl succinimides of tetraethylene pentamine as described herein are superior as lubricating oil compositions for the lubricating of internal combustion engines.
Table 111 hereinbelow presents data obtained with lubricating oil compositions under L-4 test conditions. This L-4 engine test which is fully described in the CRC Handbook, 1946 edition, Coordinating Research Council, New York, New York, is designed to evaluate the bearing corrosion characteristics and high temperature detergency of lubricating oil compositions. The detergency characteristics are rated by the piston varnish rating on the same scale described above for the FL-2 test. The L-4 test was continued beyond the normal 36 hours. The number of hours is the hours at which the same specimens were evaluated then placed in the engine for further testing.
The dithiophosphate was a zinc salt of a dialkyl dithiophosphate wherein one of the alkyl radicals contained 4 carbon atoms and the other alkyl radical contained 5 carbon atoms.
The succinimide and the dithiophosphate were the same as those described hereinabove.
This performance is exceptionally good.
As is known, the use of a number of polymeric ashless detergents and V1. improvers in lubricating oil compositions results in the formation of lead deposits on many of the parts of gasoline engines. These deposits result from the lead halides formed from the tetraethyl lead and the scavengers used in commercial gasolines. Engine failures result from the formation of these deposits. As shown by the data of Table I hereinbelow, the addition of the N-substituted alkenyl succinimides of this invention markedly improves the performance of such oils.
These tests, which correlate with actual road performance, were made in a 6-cylinder Chevrolet engine run at 2500 r.p.m., with 50 brake horsepower, an oil sump temperature of F. for a period of 36 hours, using a commercial gasoline containing 3 cc. of TEL per gallon. The oil was changed after 24 hours.
The lead rating scale ranges from 10 for a clean engine, to zero for an engine containing heavy lead deposits. Similarly, in the same engine test, piston varnish ratings were obtained, a value of 10 for a clean piston, and a value of zero for a piston heavy with varnish.
The succinimide and the dithiophosphate were the same as that described in the tables hereinabove.
TABLE IV Additive: M Succinimide, weight percent 2 Dithiophosphate, mm./kg. 18 Test results:
Lead rating 9.4 Piston varnish rating 9.9 Total rating 99.1
In addition to the dithiophosphate described hereinabove, lubricating oil compositions containing the N-substituted alkenyl succinimides of tetraethylene pentamine of this invention may also contain other detergents, viscosity index improving agents, rust inhibitors, oiliness agents, grease thickening agents, etc.
1. A lubricating oil composition comprising a major proportion of an oil of lubricating viscosity, and in an amount suficient to impart detergency characteristics thereto, a monoalkenyl succinimide of the formula:
7 wherein R is a hydrocarbon radical having a molecular weight of from about 900 to about 3000.
2. A lubricating oil composition consisting essentially of an oil of lubricating viscosity, and from about 0.1% to about 80%, by weight, of a monoalkenyl succinirnide of tetraethylene pentamine of the formula:
RGHi| J lTICH2CHz(NHCH2CH2)s-NH GHzC=-O wherein R is a hydrocarbon radical derived from a polymer of an olefin containing from 2 to carbon atoms, said polymer having a molecular weight in the range of about 900 to about 3000.
3. A lubricating oil composition consisting essentially of an oil of lubricating viscosity, and from about 0.1% to about 80%, by weight, of a monoalkenyl succinirnide of tetraethylene pentamine of the formula:
i RCH(3 NGHzCHz(NHCHzCHg)g-NH1 CH2C=O wherein R is a a hydrocarbon radical derived from a polymer of an olefin containing from 2 to 5 carbon atoms, said polymer having a molecular weight in the range of about 900 to about 1200.
wherein R is a polymer of isobutene having a molecular Weight of about 1000.
5. A lubricating oil composition comprising a major proportion of a petroleum lubricating oil, and from about 0.25% to about 5%, by weight, of an N-substituted monoalkenyl succinimide of the formula:
in which structural formula R is a substantially aliphatic hydrocarbon radical of from to 200 carbon atoms, with an equal molar quantity of tetraethylene pentamine at a temperature in the range of 220 to 360 F.
References Cited UNITED STATES PATENTS 2,490,744 12/ 1949 Trigg et a1 252-392 X 2,604,451 7/ 1952 Rocchini 252-515 2,638,450 5/1953 White et a1. 252-515 DANIEL E. WYMAN, Primary Examiner.
PATRICK P. GARVIN, JULIUS GREENWALD,
G. O. ENOCKSON, Assistant Examiner.
UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,361,673 January 2, 1968 Frank A. Stuart et a1.
It is certified that error appears in the above identified patent and that said Letters Patent are hereby corrected as shown below:
Column 1, line 57, "plugs" should read spark plugs Columns 1 and 2, formula II should appear as shown below:
iIH (II-I (fH /O CHgC-CH CH- -C CH=C-CH -CH:C I
CH n /O H NCH CH (NHCH CH -NH CH CH CH O 3 3 3 CH -C-CH CH -IC CH=C-CH CH CH n /NCH CH (NHCH CH -NH CH --C Column 3, line 46, (such as polymers of propylene)" should read (such as polymers of propylene, Column 4, line 6, "of polybutene" should read of a polybutene Column 6, line. 35, "I"-should read IV same column 6, lines 69 to 75, the
formula should appear as shown below:
Signed and sealed this 16th day of December 1969.
Attesting Officer Commissioner of Patents
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2490744 *||Feb 8, 1947||Dec 6, 1949||Socony Vacuum Oil Co Inc||Antirust agent|
|US2604451 *||Sep 16, 1948||Jul 22, 1952||Gulf Research Development Co||Mineral oil compositions|
|US2638450 *||Jan 17, 1950||May 12, 1953||Socony Vacuum Oil Co Inc||Reaction products of nu-alkylated polyalkylenepolyamines and alkenyl succinic acid anhydrides|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3434972 *||Nov 30, 1966||Mar 25, 1969||Chevron Res||Lubricant compositions containing rust inhibitors|
|US4820432 *||Jul 24, 1987||Apr 11, 1989||Exxon Chemical Patents Inc.||Lactone-modified, Mannich base dispersant additives useful in oleaginous compositions|
|US4866139 *||Oct 7, 1986||Sep 12, 1989||Exxon Chemical Patents Inc.||Lactone modified, esterified dispersant additives useful in oleaginous compositions|
|US4866140 *||Oct 7, 1986||Sep 12, 1989||Exxon Chemical Patents Inc.||Oil, fuel additives|
|US4866141 *||Oct 7, 1986||Sep 12, 1989||Exxon Chemical Patents Inc.||Lactone modified, esterfied or aminated additives useful in oleaginous compositions and compositions containing same|
|US4870197 *||Dec 12, 1986||Sep 26, 1989||Exxon Chemical Patents Inc.||Copper of zinc salts in presence of lower alkanoic acid|
|US4906394 *||Oct 7, 1986||Mar 6, 1990||Exxon Chemical Patents Inc.||Lactone modified mono-or dicarboxylic acid based adduct dispersant compositions|
|US4943382 *||Apr 6, 1988||Jul 24, 1990||Exxon Chemical Patents Inc.||Lactone modified dispersant additives useful in oleaginous compositions|
|US4954276 *||Aug 31, 1989||Sep 4, 1990||Exxon Chemical Patents Inc.||Olefin polymer modified by an unsaturated dicarboxylic acid and a hydroxy-amide or hydroxy-ester compound; efficiency; crankcase oil additive|
|US4954277 *||Aug 31, 1989||Sep 4, 1990||Exxon Chemical Patents Inc.||Lactone modified, esterified or aminated additives useful in oleaginous compositions and compositions containing same|
|US4963275 *||Apr 6, 1988||Oct 16, 1990||Exxon Chemical Patents Inc.||Dispersant additives derived from lactone modified amido-amine adducts|
|US4971711 *||Jan 9, 1989||Nov 20, 1990||Exxon Chemical Patents, Inc.||Lactone-modified, mannich base dispersant additives useful in oleaginous compositions|
|US5032320 *||Feb 28, 1991||Jul 16, 1991||Exxon Chemical Patents Inc.||Oil additives|
|US5232616 *||Aug 21, 1990||Aug 3, 1993||Chevron Research And Technology Company||Lubricating compositions|
|US5286799 *||Jul 23, 1992||Feb 15, 1994||Chevron Research And Technology Company||Reacting polyolefins with maleic anhydride, then treating mixed reaction products with more maleic anhydride to increase yields|
|US5292444 *||Oct 2, 1992||Mar 8, 1994||Exxon Research And Engineering Company||Lube oil compositions containing fullerene-grafted polymers|
|US5292813 *||Oct 2, 1992||Mar 8, 1994||Exxon Research & Engineering Co.||Fullerene-grafted polymers and processes of making|
|US5319030 *||Jul 23, 1992||Jun 7, 1994||Chevron Research And Technology Company||Reacting polyolefin with maleic anhydride in presence of free radical initiator|
|US5356552 *||Oct 12, 1993||Oct 18, 1994||Chevron Research And Technology Company, A Division Of Chevron U.S.A. Inc.||Chlorine-free lubricating oils having modified high molecular weight succinimides|
|US5387346 *||Jul 19, 1993||Feb 7, 1995||Ethyl Petroleum Additives, Inc.||Mineral oil, poly-alpha-olefin lubricating oil, an alkenyl succinimide dispersant, viscosity index improver and antioxidant|
|US5430105 *||Nov 22, 1993||Jul 4, 1995||Exxon Chemical Patents Inc.||Low sediment process for forming borated dispersant|
|US5439607 *||Dec 30, 1993||Aug 8, 1995||Exxon Chemical Patents Inc.||Multifunctional viscosity index improver-dispersant antioxidant|
|US5498809 *||May 22, 1995||Mar 12, 1996||Exxon Chemical Patents Inc.||Terminal ethylvinylidene groups which can be functionalized, dispersants|
|US5554310 *||Jun 9, 1994||Sep 10, 1996||Exxon Chemical Patents Inc.||Trisubstituted unsaturated polymers|
|US5565528 *||Jun 5, 1995||Oct 15, 1996||Chevron Chemical Company||Polymeric dispersants having polyalkylene and succinic groups|
|US5616668 *||Dec 14, 1995||Apr 1, 1997||Chevron Chemical Company||Oil additive|
|US5625004 *||Jul 23, 1992||Apr 29, 1997||Chevron Research And Technology Company||Reaction of polyolefin with maleic anhydride and treating alkenylsuccinic anhydride and unreacted polyolefin with maleic anhydride in free radical catalyst|
|US5629434 *||Sep 25, 1995||May 13, 1997||Exxon Chemical Patents Inc||Reaction product of polymer with at least one ethylenic double bond with carbon monoxide and nucleophilic trapping agent; dispersants, viscosity modifiers|
|US5643859 *||Jun 17, 1994||Jul 1, 1997||Exxon Chemical Patents Inc.||Fuel dispersant|
|US5646332 *||Jun 17, 1994||Jul 8, 1997||Exxon Chemical Patents Inc.||Batch Koch carbonylation process|
|US5650536 *||Jun 17, 1994||Jul 22, 1997||Exxon Chemical Patents Inc.||Continuous process for production of functionalized olefins|
|US5663130 *||Mar 11, 1996||Sep 2, 1997||Exxon Chemical Patents Inc||Polymers derived from ethylene and 1-butene for use in the preparation of lubricant dispersant additives|
|US5696064 *||Aug 23, 1995||Dec 9, 1997||Exxon Chemical Patents Inc.||From carbon monoxide and a nucleophilic trapping agent|
|US5698722 *||Jun 6, 1995||Dec 16, 1997||Exxon Chemical Patents Inc.||Blend of addition polymer, carbon monoxide and nucleophilic trapping agent|
|US5703256 *||Dec 16, 1996||Dec 30, 1997||Exxon Chemical Patents Inc.||Functionalization of polymers based on Koch chemistry and derivatives thereof|
|US5716912 *||Apr 9, 1996||Feb 10, 1998||Chevron Chemical Company||Treating the copolymer of polyalkylenesuccinimide and an unsaturated acid or anhydride-olefin copolymer with cyclic or linear mono or polycarbonate or boron compound|
|US5717039 *||Jun 6, 1995||Feb 10, 1998||Exxon Chemical Patents Inc.||Functionalization of polymers based on Koch chemistry and derivatives thereof|
|US5753597 *||Aug 20, 1996||May 19, 1998||Chevron Chemical Company||Polymeric dispersants|
|US5756428 *||Sep 29, 1988||May 26, 1998||Exxon Chemical Patents Inc.||Oil additive; modified polyolefin|
|US5767046 *||May 15, 1997||Jun 16, 1998||Exxon Chemical Company||Prepared by reacting an olefin, carbon monoxide, an acid catalyst and a nucleophilic trapping agent selected from hydroxy- and thiol-containing compounds|
|US5773567 *||Jun 17, 1996||Jun 30, 1998||Exxon Chemical Patents Inc||Reacting a monounsaturated hydrocarbon polymer with carbon monoxide and a polyamine in the presence of a transition metal catalyst|
|US5788722 *||May 30, 1995||Aug 4, 1998||Exxon Chemical Patents Inc||High functionality low molecular weight oil soluble dispersant additives useful in oleaginous compositions|
|US5789356 *||Feb 11, 1997||Aug 4, 1998||Exxon Chemical Patents Inc||Synergistic combinations for use in functional fluid compositions|
|US5792729 *||Aug 20, 1996||Aug 11, 1998||Chevron Chemical Corporation||Dispersant terpolymers|
|US5811377 *||Feb 3, 1997||Sep 22, 1998||Exxon Chemical Patents Inc||Low molecular weight basic nitrogen-containing reaction products as enhanced phosphorus/boron carriers in lubrication oils|
|US5821205 *||Dec 1, 1995||Oct 13, 1998||Chevron Chemical Company||Reacting an alkenyl or alkylsuccinic acid derivative, an unsaturated acidic reagent and a polyamine; oil additives|
|US5849676 *||Jul 29, 1997||Dec 15, 1998||Chevron Chemical Company||Post-treated derivatives of polyalkylene succinimides|
|US5851965 *||Jul 29, 1997||Dec 22, 1998||Chevron Chemical Company||Dispersant compositions having polyalkylene succinimides|
|US5853434 *||Jul 29, 1997||Dec 29, 1998||Chevron Chemical Company||Fuel compositions having polyalkylene succinimides and preparation thereof|
|US5861363 *||Jan 29, 1998||Jan 19, 1999||Chevron Chemical Company Llc||Borated and carbonated; lubricants; different molecular weights; soot dispersancy; corrosion and wear resistance|
|US5872082 *||Oct 21, 1997||Feb 16, 1999||Exxon Chemical Patents Inc.||Polyisobutenyl succinimides; automatic transmission fluids|
|US5872083 *||Jul 29, 1997||Feb 16, 1999||Chevron Chemical Company||Post-treated derivatives of polyalkylene succinimides|
|US5880070 *||Aug 20, 1996||Mar 9, 1999||Chevron Chemical Company||Lubricating oil additives|
|US6015776 *||Sep 8, 1998||Jan 18, 2000||Chevron Chemical Company||Polyalkylene polysuccinimides and post-treated derivatives thereof|
|US6030930 *||May 14, 1997||Feb 29, 2000||Exxon Chemical Patents Inc||Useful in lubricating oils, and to concentrates containing the oil-soluble dispersant additives|
|US6066605 *||Feb 6, 1998||May 23, 2000||Infineum Usa L.P.||Carboxylic amide-containing polymers for use as fuel or lubricating oil additives and processes for their preparation|
|US6107450 *||Dec 15, 1998||Aug 22, 2000||Chevron Chemical Company Llc||Polyalkylene succinimides and post-treated derivatives thereof|
|US6127321 *||Sep 5, 1991||Oct 3, 2000||Exxon Chemical Patents Inc||Lubricating oil, metal containing detergent or antirust agent, and oil soluble dispersant comprising the reaction product of an unsaturated acid-modified polyolefin and an amine, alcohol, or amino alcohol; does not cause thickening|
|US6140280 *||Oct 8, 1997||Oct 31, 2000||Idemitsu Kosan Co., Ltd.||Protecting 2-cycle diesel marine engine parts from corrosion and wear using a lubricating oil contianing a succinimide compound made by reacting specified polyalkylene-amines with an anhydride or acid endcapped polyolefin of given formula|
|US6146431 *||Dec 23, 1999||Nov 14, 2000||Chevron Chemical Company Llc||Polyalkylene polysuccinimides and post-treated derivatives thereof|
|US6214775||Oct 13, 1999||Apr 10, 2001||Chevron Chemical Company Llc||Treating an alkenyl or alkyl succinimide with oil solubility, cyclic carbonate to form post treated succinimide|
|US6306802||Apr 22, 1997||Oct 23, 2001||Exxon Chemical Patents Inc.||Mixed antioxidant composition|
|US6355074||May 25, 1995||Mar 12, 2002||Exxon Chemical Patents Inc||Oil soluble dispersant additives useful in oleaginous compositions|
|US6358892 *||Jan 27, 1998||Mar 19, 2002||Chevron Chemical Company||Polyalkylene succinimides and post-treated derivatives thereof|
|US6440905||Apr 24, 2001||Aug 27, 2002||The Lubrizol Corporation||Surfactants and dispersants by in-line reaction|
|US6642191||Nov 29, 2001||Nov 4, 2003||Chevron Oronite Company Llc||Lubricating oil additive system particularly useful for natural gas fueled engines|
|US6756348||Nov 29, 2001||Jun 29, 2004||Chevron Oronite Company Llc||Wear and oxidation resistance; oil additives|
|US6827750||Aug 24, 2001||Dec 7, 2004||Dober Chemical Corp||Controlled release additives in fuel systems|
|US6835218||Aug 24, 2001||Dec 28, 2004||Dober Chemical Corp.||Fuel additive compositions|
|US6860241||Aug 24, 2001||Mar 1, 2005||Dober Chemical Corp.||Fuel filter including slow release additive|
|US6867171||Nov 27, 2002||Mar 15, 2005||Chevron Oronitz Company Llc||Liquids; easy to handle; paper chemicals, lubricants, dis-persants, detergents|
|US6906011||Nov 9, 2001||Jun 14, 2005||Chevron Oronite Company Llc||Polymeric dispersants prepared from copolymers of low molecular weight polyisobutene and unsaturated acidic reagent|
|US7001531||Aug 24, 2001||Feb 21, 2006||Dober Chemical Corp.||Releasing polymer into coolant; concentrated aqueous solution; internal combustion engine|
|US7182795||Mar 13, 2002||Feb 27, 2007||Atton Chemical Intangibles Llc||Fuel lubricity additives derived from hydrocarbyl succinic anhydrides and hydroxy amines, and middle distillate fuels containing same|
|US7361629||Mar 10, 2004||Apr 22, 2008||Afton Chemical Corporation||Heating succinic anhydride modified polyisobutylene to a vessel; contacting an aromatic polyamine with an aliphatic polyamine to form a mixture, reacting amine mixture with modified polyisobutylene to form aminated product; improved dispersancy, and antioxidant properties|
|US7422161||Mar 30, 2006||Sep 9, 2008||Afton Chemical Corporation||Treated port fuel injectors|
|US7485734||Jan 28, 2005||Feb 3, 2009||Afton Chemical Corporation||Seal swell agent and process therefor|
|US7563314||Nov 30, 2005||Jul 21, 2009||Xerox Corporation||Colloidal dispersion of silica nanoparticles and metal oxide nanoparticles, low melting wax, and/or gelling agent; nonaggregating|
|US7581558||Jun 5, 2007||Sep 1, 2009||Cummins Filtration Ip Inc.||Controlled release of additives in fluid systems|
|US7591279||Aug 16, 2002||Sep 22, 2009||Cummins Filtration Ip Inc.||Chemical resistant container for lubricants, hydraulic fluids|
|US7618928||Aug 31, 2005||Nov 17, 2009||Chevron Oronite Company Llc||Lubricating oil additive composition and method of making the same|
|US7645728||Feb 17, 2004||Jan 12, 2010||Afton Chemical Corporation||Lubricant and fuel additives derived from treated amines|
|US7655084||Dec 12, 2005||Feb 2, 2010||Xerox Corporation||Carbon black inks and method for making same|
|US7662887||Oct 1, 2008||Feb 16, 2010||Infineum International Limited||Method of forming polyalkene substituted carboxylic acid compositions|
|US7682491||Mar 26, 2007||Mar 23, 2010||Nalco Company||Adding antifouling agents based on a polyolefin of one or more C2-C10 monomers having a C4-C10 monounsaturated dicarboxylic acid end group; polyisobutylene succinic anhydride; low dosage; used especially for ethylene dichloride distillation units, polychloroprene containing ferric ions; solvent mixtures|
|US7700673||Dec 22, 2006||Apr 20, 2010||Bridgestone Corporation||Reduced oil rubber compositions including N-substituted polyalkylene succinimide derivates and methods for preparing such compositions|
|US7745542||Jul 27, 2006||Jun 29, 2010||Chevron Oronite Company Llc||Reacting copolymer comprised of ethylenically unsaturated comonomers with polyether aromatic compound; free radical catalysis; dispersants in internal combustion engines; block polymerization; addition-condensation polymerization|
|US7786209||Sep 21, 2007||Aug 31, 2010||Xerox Corporation||Hydrophobically- or hydrophilically-functionalized polysilesquioxanes with at least one pendant waxy aliphatic group, that can self-assemble into lamellar nanostructures with dimensions up to 100 nm; improved wear resistance and image durability for solid wax-based inks|
|US7816309||Oct 27, 2006||Oct 19, 2010||Chevron Oronite Company Llc||React copolymer with ether and aliphatic compound capable of reacting with carboxylic acid, ester, anhydride; free radical initiator; multi-functional dispersants in an internal combustion engine|
|US7820602||Jul 12, 2006||Oct 26, 2010||King Industries, Inc.||Diarylamine or alkylated phenothiazine as antioxidants; for use in crankcase and transmission|
|US7820604||Oct 27, 2006||Oct 26, 2010||Chevron Oronite Company Llc||Lubricating oil additive composition and method of making the same|
|US7820605||Oct 27, 2006||Oct 26, 2010||Chevron Oronite Company Llc||Reacting copolymer comprised of ethylenically unsaturated comonomers with polyether aromatic compound; free radical catalysis; dispersants in internal combustion engines; block polymerization; addition-condensation polymerization|
|US7858566||Oct 27, 2006||Dec 28, 2010||Chevron Oronite Company Llc||React copolymer with ether and aliphatic compound capable of reacting with carboxylic acid, ester, anhydride; free radical initiator; multi-functional dispersants in an internal combustion engine|
|US7863228||Mar 17, 2008||Jan 4, 2011||Afton Chemical Corporation||Acylating an aromatic diamine with succinic acid-endcapped polyisobutylene; crankcase lubricants for diesel and gasoline engines; dispersants for automatic transmission fluids; variable gear oils, hydraulic oils; antideposit agents|
|US7875576||Jul 29, 2004||Jan 25, 2011||Chevron Oronite Company Llc||Lubricating oil composition for internal combustion engines|
|US7883638||May 27, 2008||Feb 8, 2011||Dober Chemical Corporation||Used in an open circulating cooling water system water and comprises a core having a polymeric coating including an additive for sustained release into the coolant; slow release of a microbiocide by means of a butyl acrylate-vinyl acetate-vinyl neoheptanoate terpolymer release agent|
|US7884058||Sep 30, 2003||Feb 8, 2011||Chevron Oronite Company Llc||Stable colloidal suspensions and lubricating oil compositions containing same|
|US7928044||Oct 27, 2006||Apr 19, 2011||Chevron Oronite Company Llc||Lubricating oil additive composition and method of making the same|
|US7938277||May 27, 2008||May 10, 2011||Dober Chemical Corporation||Controlled release of microbiocides|
|US7947636||Feb 27, 2004||May 24, 2011||Afton Chemical Corporation||Power transmission fluids|
|US8029861||Sep 23, 2008||Oct 4, 2011||Xerox Corporation||Ink carriers containing low viscosity functionalized waxes, phase change inks including same, and methods for making same|
|US8067347||Oct 27, 2006||Nov 29, 2011||Chevron Oronite Company Llc||Lubricating oil additive composition and method of making the same|
|US8080500||Apr 3, 2008||Dec 20, 2011||King Industries, Inc.||Amine tungstates and lubricant compositions|
|US8109287||Jul 22, 2009||Feb 7, 2012||Cummins Filtration Ip, Inc.||Controlled release of additives in fluid systems|
|US8123344||Aug 4, 2008||Feb 28, 2012||Xerox Corporation||Ink carriers containing surface modified nanoparticles, phase change inks including same, and methods for making same|
|US8153566||Sep 30, 2008||Apr 10, 2012||Cherron Oronite Company LLC||Lubricating oil compositions|
|US8177897||Nov 17, 2008||May 15, 2012||Xerox Corporation||Phase change inks containing graphene-based carbon allotrope colorants|
|US8348409||Nov 17, 2008||Jan 8, 2013||Xerox Corporation||Ink jet inks containing nanodiamond black colorants|
|US8389609||Jun 30, 2010||Mar 5, 2013||Bridgestone Corporation||Multiple-acid-derived metal soaps incorporated in rubber compositions and method for incorporating such soaps in rubber compositions|
|US8425772||Jul 29, 2011||Apr 23, 2013||Cummins Filtration Ip, Inc.||Filtration device with releasable additive|
|US8455568||Apr 25, 2008||Jun 4, 2013||Chevron Oronite Company Llc||Lubricating oil additive composition and method of making the same|
|US8546464||Jun 26, 2009||Oct 1, 2013||Bridgestone Corporation||Rubber compositions including metal-functionalized polyisobutylene derivatives and methods for preparing such compositions|
|US8591747||May 26, 2009||Nov 26, 2013||Dober Chemical Corp.||Devices and methods for controlled release of additive compositions|
|US8690968||Apr 4, 2008||Apr 8, 2014||Afton Chemical Corporation||Succinimide lubricity additive for diesel fuel and a method for reducing wear scarring in an engine|
|US8702995||May 27, 2008||Apr 22, 2014||Dober Chemical Corp.||Controlled release of microbiocides|
|US8802755||Mar 11, 2013||Aug 12, 2014||Bridgestone Corporation||Rubber compositions including metal phosphate esters|
|CN1043772C *||Dec 15, 1992||Jun 23, 1999||中国石油化工总公司石油化工科学研究院||Method for preparation of dispersed oil additives|
|EP0351964A1||Jun 23, 1989||Jan 24, 1990||Exxon Chemical Patents Inc.||Synergistic combination of additives useful in power transmitting compositions|
|EP0399764A1||May 21, 1990||Nov 28, 1990||Ethyl Petroleum Additives Limited||Lubricant compositions|
|EP0515027A2 *||Apr 10, 1992||Nov 25, 1992||Exxon Chemical Patents Inc.||Process for preventing fouling in the production of ethylene dichloride|
|EP0611818A1||Jul 30, 1991||Aug 24, 1994||Exxon Chemical Patents Inc.||Low pressure derived mixed phosphorous- and sulfur-containing reaction products useful in power transmitting compositions and process for preparing the same|
|EP0683220A2||May 18, 1995||Nov 22, 1995||Ethyl Corporation||Lubricant additive compositions|
|EP0776963A1||Nov 29, 1996||Jun 4, 1997||Chevron Chemical Company||Polyalkylene succinimides and post-treated derivatives thereof|
|EP0831104A2||Dec 5, 1996||Mar 25, 1998||Chevron Chemical Company||Novel dispersant terpolymers|
|EP1503316A1||Jul 28, 2004||Feb 2, 2005||Ethyl Petroleum Additives, Inc.||Fuel consumption economy credits method|
|EP1640440A1||Aug 30, 2005||Mar 29, 2006||Infineum International Limited||Friction and/or wear reduction in manual or automated manual transmissions|
|EP1669436A1||Dec 8, 2005||Jun 14, 2006||Afton Chemical Corporation||Oxidation stable gear oil compositions|
|EP1757673A1||Aug 23, 2005||Feb 28, 2007||Chevron Oronite Company LLC||Lubricating oil composition for internal combustion engines|
|EP1840192A1||Jan 9, 2007||Oct 3, 2007||Afton Chemical Corporation||Treated port fuel injectors|
|EP1916292A1||Oct 26, 2007||Apr 30, 2008||Chevron Oronite Company LLC||A lubricating oil additive composition and method of making the same|
|EP1916293A1||Oct 26, 2007||Apr 30, 2008||Chevron Oronite Company LLC||A lubricating oil additive composition and method of making the same|
|EP1970430A2||Jan 24, 2008||Sep 17, 2008||Afton Chemical Corporation||Fuel composition containing a hydrocarbyl-substituted succinimide|
|EP2025737A1||Jul 30, 2008||Feb 18, 2009||Afton Chemical Corporation||Environmentally-friendly fuel compositions|
|EP2031045A1||Jul 29, 2008||Mar 4, 2009||Infineum International Limited||Lubricant compositions with reduced phosphorous content for engines having catalytic converters|
|EP2042582A2||Aug 25, 2008||Apr 1, 2009||Afton Chemical Corporation||Surface passivation and to methods for the reduction of fuel thermal degradation deposits|
|EP2072611A1||Nov 11, 2008||Jun 24, 2009||Afton Chemical Corporation||Lubricant composition suitable for engines fueled by alternate fuels|
|EP2075264A1||Dec 4, 2008||Jul 1, 2009||Infineum International Limited||Method of forming polyalkene substituted carboxylic acid compositions|
|EP2107102A2||Apr 3, 2009||Oct 7, 2009||Afton Chemical Corporation||A succinimide lubricity additive for diesel fuel|
|EP2184338A2||Dec 7, 2004||May 12, 2010||The Lubrizol Corporation||Lubricating composition containing metal salixarate as detergent and succinimides as dispersants|
|EP2272940A1||Sep 13, 2002||Jan 12, 2011||Afton Chemical Intangibles LLC||Fuels compositions for direct injection gasoline engines|
|EP2290040A1||Jul 29, 2010||Mar 2, 2011||Chevron Japan Ltd.||Friction modifier and transmission oil|
|EP2431448A1||Feb 24, 2010||Mar 21, 2012||The Lubrizol Corporation||Lubricating compositions containing the reaction product of an aromatic amine and a carboxylic functionalised polymer and dispersant|
|EP2554636A1||Aug 3, 2011||Feb 6, 2013||Innospec Limited||Fuel compositions|
|EP2644684A1||Feb 25, 2010||Oct 2, 2013||Innospec Limited||Methods and uses relating to fuel compositions|
|WO1998047989A1||Mar 19, 1998||Oct 29, 1998||Exxon Chemical Patents Inc||Power transmission fluids containing alkyl phosphonates|
|WO2008130214A1 *||Apr 15, 2008||Oct 30, 2008||Conde Hiram Isaac Beltran||Oxazolidines derived from polyalkyl or polyalkylene n-hydroxyalkyl succinimides, method for preparation and use|
|WO2010099136A1||Feb 24, 2010||Sep 2, 2010||The Lubrizol Corporation||Lubricating compositions containing the reaction product of an aromatic amine and a carboxylic functionalised polymer and dispersant|
|WO2010147993A1||Jun 15, 2010||Dec 23, 2010||Chevron Phillips Chemical Company Lp||Oligomerization of alpha olefins using metallocene-ssa catalyst systems and use of the resultant polyalphaolefins to prepare lubricant blends|
|WO2010148652A1||Jun 25, 2010||Dec 29, 2010||China Petroleum & Chemical Corporation||Diesel composition and process for improving oxidation stability of biodiesel|
|WO2011059626A1||Oct 14, 2010||May 19, 2011||The Lubrizol Corporation||Lubricant system clean-up compositions and methods thereof|
|WO2011095819A1||Feb 4, 2011||Aug 11, 2011||Innospec Limited||Fuel compositions|
|WO2011102835A1||Feb 19, 2010||Aug 25, 2011||Toyota Jidosha Kabushiki Kaisha||Wet friction clutch-lubricant systems providing high dynamic coefficients of friction through the use of sodium detergents|
|WO2011102836A1||Feb 19, 2010||Aug 25, 2011||Infineum International Limited||Wet friction clutch-lubricant systems providing high dynamic coefficients of friction through the use of borated detergents|
|WO2011110860A1||Mar 10, 2011||Sep 15, 2011||Innospec Limited||Fuel composition comprising detergent and quaternary ammonium salt additive|
|WO2011141731A1||May 10, 2011||Nov 17, 2011||Innospec Limited||Composition, method and use|
|WO2011146289A1||May 11, 2011||Nov 24, 2011||The Lubrizol Corporation||Methods and compositions that provide detergency|
|WO2011146456A1||May 17, 2011||Nov 24, 2011||The Lubrizol Corporation||Low ash lubricants with improved seal and corrosion performance|
|WO2011149799A1||May 23, 2011||Dec 1, 2011||The Lubrizol Corporation||Method to provide power gain in an engine|
|WO2011153178A2||Jun 1, 2011||Dec 8, 2011||The Lubrizol Corporation||Lubricating composition containing a carboxylic functionalised polymer|
|WO2011159742A1||Jun 15, 2011||Dec 22, 2011||The Lubrizol Corporation||Methods of removing deposits in oil and gas applications|
|WO2012027254A1||Aug 22, 2011||Mar 1, 2012||The Lubrizol Corporation||Lubricants containing aromatic dispersants and titanium|
|WO2012084906A1||Dec 20, 2011||Jun 28, 2012||Rhodia Operations||Fuel additive composition containing a dispersion of iron particles and a detergent|
|WO2012162020A1||May 15, 2012||Nov 29, 2012||The Lubrizol Corporation||Stabilized blends containing antioxidants|
|WO2012162027A1||May 15, 2012||Nov 29, 2012||The Lubrizol Corporation||Stabilized blends containing friction modifiers|
|WO2012162219A1||May 21, 2012||Nov 29, 2012||The Lubrizol Corporation||Stabilized blends containing friction modifiers|
|WO2012162282A1||May 22, 2012||Nov 29, 2012||The Lubrizol Corporation||Stabilized blends containing friction modifiers|
|WO2012177529A1||Jun 18, 2012||Dec 27, 2012||The Lubrizol Corporation||Lubricating compositions containing salts of hydrocarbyl substituted acylating agents|
|WO2013017884A1||Aug 2, 2012||Feb 7, 2013||Innospec Limited||Fuel compositions|
|WO2013017886A1||Aug 2, 2012||Feb 7, 2013||Innospec Limited||Fuel compositions|
|WO2013017887A1||Aug 2, 2012||Feb 7, 2013||Innospec Limited||Fuel compositions|
|WO2013017889A1||Aug 2, 2012||Feb 7, 2013||Innospec Limited||Fuel compositions|
|WO2013043332A1||Aug 29, 2012||Mar 28, 2013||The Lubrizol Corporation||Quaternary ammonium salts in heating oils|
|WO2013062924A2||Oct 23, 2012||May 2, 2013||The Lubrizol Corporation||Lubricating composition containing an esterified polymer|
|WO2013123102A2||Feb 14, 2013||Aug 22, 2013||The Lubrizol Corporation||Lubricating composition including esterified copolymer and low dispersant levels suitable for driveline applications|
|WO2013123160A1||Feb 14, 2013||Aug 22, 2013||The Lubrizol Corporation||Mixtures of olefin-ester copolymer with polyolefin as viscosity modifier|
|WO2014047017A1||Sep 17, 2013||Mar 27, 2014||The Lubrizol Corporation||Lubricant comprising a mixture of an olefin-ester copolymer with an ethylene alpha-olefin copolymer|
|WO2014066344A1||Oct 22, 2013||May 1, 2014||The Lubrizol Corporation||Diesel detergent without a low molecular weight penalty|
| || |
|Cooperative Classification||C10M2229/043, C10M2205/024, C10M2229/042, C10M2229/046, C10M2205/026, C10M2203/104, C10M2203/04, C10M2229/048, C10M2229/041, C10M2207/34, C10M2203/10, C10M2227/04, C10M2203/024, C10M2223/045, C10N2250/10, C10M2217/046, C10M2203/02, C10N2210/02, C10N2240/101, C10M2203/106, C10M2229/044, C10M2215/086, C10M2207/04, C10M2215/04, C10M2209/109, C10M2205/00, C10M2215/26, C10M2203/102, C10M2223/04, C10M133/56, C10M2217/06, C10M2215/28, C10M2209/108, C10M2203/108, C10M2227/02, C10M2203/022, C10M2229/047, C10N2240/10, C08F8/46, C10N2240/106, C10N2240/104, C10M2209/105, C10M2207/282, C10M2223/042, C10M2229/045, C10M2203/06, C10M2229/04, C08F8/32|
|European Classification||C08F8/32, C08F8/46, C10M133/56|