US 3201314 A
Description (OCR text may contain errors)
g- 1965 F. s. MORSHAUSER ETAL 3,201,314
ULTICOLORED LIPSTICK AND PREPARATION THEREOF Filed May 17, 1963 1g 2g 24 3 L COLOR 1 COLOR 2 o o csa o o O o o o o o 0 0 MOLD FIG .I
INVENTORS FRED S. MORSHAUSER SAMUEL KALISH ATTORNEY United States Patent 3,201,314 MULTICOLQ till) LlPS'lltClK AND PREPARATELN THEREUF Fred S. Morshauser, Pompton Plains, NJ and Samuel Kalish, New York, N.i1., assignors to Warner-Lambert Pharmaceutical Company, Morris Plains, N..l., a corporation of Delaware Filed May 17, 1963, Ser. No. 281,216 4 Claims. (Cl. 167-85) This invention relates to a multi-colored unitary cosmetic preparation. More particularly, the invention relates to a method of producing a multi-colored lipstick wherein the several colors are heterogeneously associated in the color combinations employed.
The application of several lipsticks to produce a twotoned or multi-colored effect on the lips is a well-known practice. It is customary practice to use two lipsticks to achieve the desired multi-colored effect; one being applied as a base lining and the second superimposed thereon for contrast.
In an attempt to produce a unitary lipstick having one color for lining and a second for contrast, lipsticks have been produced wherein individual segments of different colors are molded separately and the segments then pressed together to produce a unitary stick or mass. Such lipsticks have, however, met with limited commercial success as they are more difficult and expensive to produce than individual solid colored lipsticks; Further, lipsticks which are formed by combining molded lipstick segments of different colors into a multi-color tube are commonly used as separate lipsticks offering the convenience of two colors in one.
It has now been found that a unique cosmetic preparation comprising a heterogeneous multi-colored lipstick may be obtained in accordance with the present invention by heterogeneously associating a plurality of differ ently colored lipstick masses so as to produce a result which, heretofor, could only be accomplished by use of separate and distinct lipsticks. This invention arises out of the surprising discovery that the incorporation of certain additions in cosmetic lipstick base formulations results in a degree of viscosity greater than is normally present in such molten masses and it is this enhanced viscosity which enables the production of the heterogeneous color associations by the practice of this invention.
An important object of this invention is to provide a multicolored lipstick composition wherein the colors are so combined that a heterogeneous color effect is produced with the separate colors being sharply delineated.
Another object of this invention is to rovide a method for preparing such multicolored lipsticks wherein the multi-colors are combined in distinctive fashion in but a single tube so that said tube is convenient for the simultaneous application of the multi-colored mass to the lips.
Other objects will become apparent from the following detailed description and the accompanying drawing in which:
Fl. 1 is a flow diagram of the process employed in the present invention for producing the novel lipstick compositions of this invention, and
FIG. 2 is a side elevational view of the novel lipstick of this invention produced thereby.
More particularly, the invention provides a method for the preparation of multi-colored lipsticks having at least two distinctively different shades of base formulation which comprises preparing a lipstick base formulation, adding distinctively different coloring agents to separate portions of the lipstick base formulation, melting the separate lipstick base formulations and combining the molten colored base formulations into a unitary product having substantially complete color separation.
Referring to FIG. 1, a base formulation is prepared from a mixture of ingredients such as waxes, oils, and the like, preferably free of coloring pigments or perfumes and which are blended in tank 1d by stirring rod 12. If desired, different lipstick base formulations may be prepared for each separate coloring agent to be utilized in the final product or, as shown in PEG. 1, a single base formulation may be prepared which is divided and subsequently combined with desired colors and pigments. Regardless of how the lipstick base formulations are prepared, it is desirable that the base formulations for each color have substantially similar consistencies to produce a uniform product when combined.
After the lipstick base formulations have been prepared individual portions are taken by lines 14 and 16-. and received in color blending tanks 13 and 26. At least two distinctively different colors are then added to separate portions of the base formulation in the color blending tanks through lines 22 and 2d and dispersed by stirrers 2s and 28 along with perfumes as desired. In this manner, a plurality of distinctively colored base compositions are prepared for further processing. The base formulations, the coloring agents, any additive agents and the perfumes may all be combined by any of the mixing methods well known to the art such as roller mills, colloid mills, and the like. Also, additional colors and coloring tanks may be used to prepare and combine colored bases as described to give a multi-colored product in which more than two distinct colors are combined.
After the colors and pigments as well as perfumes, if desired, have been added to and combined with the lip stick base formulation in color blending tanks 18 and, Ztl, an addition of an inert fortifying agent such as fine silica having an average particle size of approximately 0.62 micron is made in an amount which can vary from a trace up to about 12% by weight of the base. A preferred concentration of extremely fine silica is from about 2% up to about 5% by weight of the lipstick base formulation. Although extremely finely divided silica is preferred as a fortifying agent, various other finely powdered compositions may also be employed provided they increase the molten viscosity of the base formulations without affecting the uniform consistency of the ultimate product. Materials usefully employed as fortifying agents include materials such as, for example, silica of larger particle size, alumina, calcium carbonate, magnesium carbonate, bentonites, talcs, zinc oxide, and the like. Various other means may also be employed to achieve the proper molten viscosity, such as, the addition of various oil soluble resins, soluble metallic soaps and viscous polymerized oils. Extremely fine silica particles are preferred, however, because control over the molten viscosity is easily achieved with virtually no effect upon the final lipstick texture. This control is fundamentally important in the manufacture of lipstick according to this invention because viscous molten masses promote the formation of sharply defined color separation with virtually no intermixing. These fortifying agents may be added during the initial blending of the ingredients in tank it but by adding them to the color blending tanks, greater control may be achieved in producing the proper molten viscosity while maintaining uniform consistency in the final product.
The blended color-containing base formulations from the color blending tanks are allowed to flow by lines 39 and 32 into a funnel shaped heterogeneous blender 34 which is shown rotating about its vertical axis by gear 36 driven by electric powered motor 38 Under uniform laminar-flow conditions, the flow from lines 30 and 32 of the color blending tanks may be regulated to coincide to the mixed outflow via line 46. This may be achieved by maintaining a slight reservoir at the constriction of the funnel shaped heterogeneous blender, i.e., the point where the colors are blended. However, a more desirable method of achieving laminar-flow blending conditions in the heterogeneous association of colored base formulations is to add a divider plate, not shown, in the funnel for each particular color. Dividing partitions such as annular, sectional and the like may also be employed to impart various design characteristics to the heterogeneous association of colored base formulations. When a dividing partition is used for two lipstick colors a stopper is inserted in the outflow stream while the compartments, which may be heated, are filled. Thereupon, the stopper is removed and the funnel rotated while the exit flow of blended colors is directed into a suitable lipstick split mold.
The funnel shaped heterogeneous blender 34 may be rotated at any desirable speed such as from about 1 rpm. up to about 200 r.p.m., noncritically. Additional procedures may be devised to create desirable swirl and marbleized design effects which may readily be adapted to the present process such as, for example, by employing rotational motion of spigots in place of the funnel, noncircular motion of the funnel, or of the mold, mold oscillating under a stationary funnel, mold oscillating under a rotating funnel, mold rotating under an oscillating funnel, or the like. Other suitable combinations may also be devised which deliver at least two distinctively different colors into heterogeneous association under laminar-flow conditions. The apparatus should theretofore be designed to avoid turbulent flow during the combining of the colors.
Referring to FIG. 2, there is shown a lipstick formed by the process of FIG. 1 wherein a dark colored lipstick 42 is heterogeneously associated with a light colored lipstick 44 in the form of a lipstick tube. The tube is shown in a case 46 having adjustable base 48 which may be rotated for projection of the lipstick from the case.
The term heterogeneously associated as used herein means the intimate combination of distinctively different colored base compositions to form a mass having virtually complete color separation which may be easily perceived by the unaided, naked eye.
The compositions for use in base formulation include any suitable base material known to the art which contains materials such as carnauba wax, candelilla wax, Ozokerite, bees wax, lanolin, ceresin, spermaceti, isopropyl myristate and castor oil which when combined produce a suitable base formulation having the suitable viscosity for the molten combination of the colors. An example of a suitable lipstick base composition usefully employed is as follows.
Composition: Weight percent Castor oil 65.0
Carnauba wax 3.0
Beeswax 7.0 Isopropyl myristate 5.0
The coloring agents usefully employed in this invention to provide proper coloring to the base formulation prior to their being heterogeneously associated includes those well known to the art such as, for example, Food, Drug and Cosmetic or Drug and Cosmetic certified colors and inert pigments suitable for use in lipsticks. These dyes and pigments may be added in an amount from about to about 20 parts by weight for each 100 parts by weight of lipstick base. Flavoring such as synthetic 4. aromatics, essential oils, or other similar material may also be included if desired.
Additional material such as flavoring or perfumes are not necessary to or essential parts of the present composition but may be used as desired in relatively small quantities.
The principles of this invention may be applied to molded cosmetic products other than lipstick specifically set forth herein. Cosmetic products usefully processed by the invention may also include molded cosmetic sticks such as eye shadow, mascara, deodorant sticks or the like.
It is understood that the foregoing detailed description is given merely by way of illustration and that many variations may be made therein without departing from the spirit of the invention, which is intended to be limited only by the appended claims.
What is claimed is:
1. A method for the preparation of multi-colored unitary lipsticks which comprises preparing a lipstick base formulation, adding a first coloring agent to a first portion and a second coloring agent to a second portion of the lipstick base formulation, said first coloring agent being distinctively different and distinguishable in color by the naked, unaided eye from said second coloring agent, melting the separate lipstick base formulations with stirring to effect color distribution and thereafter combining the molten-colored base formulation into a unitary solid product having substantially complete color separation between the combined portions of base formulation.
2. A method for the preparation of rnulti-colored unitary lipsticks which comprises preparing a lipstick base formulation, adding a first coloring agent to a first portion and a second coloring agent to a second portion of the lipstick base formulation, said first coloring agent being distinctively different and distinguishable in color by the naked, unaided eye from said second coloring agent, melting the colored base formulations while dispersing the color therein, blending less than 12% by weight of an inert fortifying agent with each colored base formulation, combining the molten-colored base formulation into a flowing stream and shaping the flowing stream into a solid product having substantially complete color separation between the combined portion of base formulations.
3. A method as in claim 2 wherein the inert fortifying agent is fine silica particles having an average particle size of about 0.02 micron.
4. A multi-colored lipstick which comprises a heterogeneous association of at least two distinctively different colored base compositions, said colored base compositions forming a unitary marbleized mass having virtually complete color separation easily perceived by the unaided, naked eye.
References Cited by the Examiner UNITED STATES PATENTS 2,566,722 9/51 Friedberg 167-85 X 2,772,982 12/56 Vesce 16785 X 3,086,914 4/63 Solway l67-85 FOREIGN PATENTS 1,064,713 12/53 France.
OTHER REFERENCES Merck Index, 7th ed., Merck and Co., Rahway, NJ., 1960, p. 934.
JULIAN S. LEVITT, Primary Examiner.
LEWIS GOTTS, Examiner.