Drug – bio-affecting and body treating compositions – Manicure or pedicure compositions
Reexamination Certificate
1999-12-16
2001-10-16
Dodson, Shelley A. (Department: 1616)
Drug, bio-affecting and body treating compositions
Manicure or pedicure compositions
C424S070100, C424S078170, C424S401000, C514S880000
Reexamination Certificate
active
06303105
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to cosmetic compositions. More particularly, the present invention relates to cosmetic compositions applied to the lips, eyes, and face having improved wear resistance and long-lasting high shine.
2. Description of the Prior Art
Various organic waxes and film formers are known in the art for their ability to impart uniform films and protective barriers to the skin and lips. Most of these films have good shine but are slow to dry on application. Since these slow-drying films remain semi-wet for extended periods of time, products that have such film formers adhere poorly and tend to transfer off the surface to which they are applied. This results in poor overall cosmetic wear, and requires that the user reapply the cosmetic frequently.
Film formers that provide somewhat more rapid drying times, and hence better transfer resistance, have their own limitations. A primary limitation is an unpleasant tacky and “pulling” feel on application to the skin, lips, or lashes upon drying. Consumers dislike such a feel. Another limitation is the tendency of cosmetic products having such film formers to drag against the skin when applied, leaving the skin feeling dry and sticky.
In the past few years, various types of solvent-based transfer resistant cosmetic products have been available. Such products include lipsticks, eye shadows, blushes, foundations, mascaras, eyeliners, and lip liners. Transfer resistant solvent-based cosmetic products provide longer wear compared to conventional oil or wax-based systems. However, the applied product loses its shine once the solvent has evaporated. Longer lasting shine is preferred by cosmetic wearers.
U.S. Pat. No. 5,143,723 to Calvo, et al. provides for a colored cosmetic product having pigments formed by incorporating a solvated dye into a resin. Polymeric materials approved by the Food and Drug Administration as “indirect food additives” are especially preferred resins for use in this make-up composition. These resins include styrene block polymers and ethylene-methyl acrylate copolymer resins. However, this patent does not provide for cosmetics with transfer resistant characteristics.
U.S. Pat. No. 5,030,374 to Tranner, titled Clear Neutral Non-Foaming Rapidly-Rinseable Gel Facial Cleanser Formulation, has a block copolymer and an acrylic copolymer. Nonetheless, this patent also does not provide for cosmetics with transfer resistant characteristics.
U.S. Pat. No. 4,792,444 to Fukasawa, et al., titled Cosmetic Comprising Fluoroalkyl (Meth)Acrylate Copolymers, has a cosmetically acceptable volatile oil and at least one copolymer of a first monomer selected from fluoroalkyl acrylates or fluoroalkyl methacrylates, and a second monomer selected from alkyl acrylates or methacrylates. This patent does not provide a cosmetic product that maintains its shine once the volatile oil evaporates.
U.S. Pat. No. 5,807,540 to Junino, et al., titled Nail Varnish Composition Comprising a Crosslinked Polyester, has at least one film-forming material, a solvent medium, and at least one crosslinked polyester. The polyester is derived from the polycondensation of adipic acid, diethylene glycol, and a polyol having at least three hydroxyl groups. The film forming material may have a resin.
Thus, it is apparent that there remains a need to provide a cosmetic composition having transfer resistant characteristics while maintaining long-lasting high shine, flexibility, smoothness, and uniformity.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide cosmetic compositions for application to the lips, eyes, and face that maintain a high shine after application.
It is another object of the present invention to provide such cosmetic compositions that have minimum transfer and improved wear characteristics.
It is still another object of the present invention to provide such cosmetic compositions having acceptable flexibility, smoothness, and uniformity.
These and other objects of the present invention are achieved by a cosmetic composition having, as film formers, (1) an alkyl cycloalkylacrylate copolymer having C
14
to C
36
repeating alkyl units, (2) an ester containing acids derived from rosin, and (3) a block copolymer. The composition preferably includes a volatile solvent. The composition is transfer/wear resistant and maintains a high shine.
DETAILED DESCRIPTION OF THE INVENTION
The present invention provides a wear-resistant cosmetic product or composition such as, a lipstick, foundation, eye shadow, lip liner, eyeliner, blush, or mascara. It has been unexpectedly discovered that the foregoing cosmetic compositions having a combination of the film formers and plasticizer described below have high shine (i.e. high releactive property) and transfer/wear resistance. Such a cosmetic composition is also flexible or non-brittle, smooth or non-tacky, and uniform when applied. A cosmetic composition having the film formers of the present invention is also easy to apply and has a pleasant feel when applied to the skin.
The first film former is one or more copolymers consisting of alkyl cycloalkylacrylate monomers. The preferred alkyl cycloalkylacrylate copolymers and the isomers thereof have the following formulas:
where R
1
to R
4
are each independently a hydrogen or a C
14
to C
36
alkyl group.
The preferred alkyl cycloalkylacrylate copolymers are soluble in hydrocarbons, such as isododecane, but not soluble in water. Thus, the film-forming effect of the copolymers is suitable for use in either an anhydrous system or a water-containing system.
Preferably, the alkyl cycloalkylacrylate copolymer for use in the present invention is a cycloalkyl methacrylate copolymer having C
14
to C
36
alkyl repeating units. A preferred cycloalkyl methacrylate copolymer is a bicycloalkyl methacrylate copolymer manufactured by Phoenix Chemicals, Inc., Somerville, N.J. and sold under the tradename Giovarez AC-5099 ML.
The one or more alkyl cycloalkylacrylate copolymers are preferably about 0.01 percent by weight (wt %) to about 75 wt % of the total composition. More preferably, the alkyl cycloalkylacrylate copolymers are about 10 wt % to about 25 wt %, and most preferably about 15 wt %.
The second film former is one or more esters containing acids derived from rosin. The preferred esters of the present invention are glyceryl rosinate, pentaerythrityl rosinate, silicone rosinate, and mixtures thereof. Esters of rosin acids are insoluble in water, thus enhancing the film-forming effect of the ester in a volatile solvent base.
The esters of rosin acids are preferably present in an amount about 0.10 wt % to about 20 wt %. More preferably, the esters of rosin acids are present in an amount about 2 wt % to about 15 wt %, and most preferably about 5 wt %.
The wear-resistant composition according to the present invention has at least one plasticizer, namely one or more block copolymers. Preferably, the block copolymers for use in the present invention are not water-soluble, but are soluble in certain oils and hydrocarbon solvents such as isoparaffin and isododecane. This solubility allows the block copolymers to be delivered to the skin by one or more volatile solvents. Once delivered, the volatile solvents evaporate, at least partially, leaving a water-insoluble, block copolymer film on the skin. This film resists transfer and wear.
Preferably, the block copolymers have styrene monomers, or other monomers derived from butylene, copolymerized with ethylene and propylene or butylene monomers. These block copolymers are known as styrene/ethylene/propylene tri-block copolymers and styrene/ethylene/butylene tri-block copolymers. Such tri-block copolymers act as plasticizers, as well as film formers. It should be understood that one or more mixed-block copolymers might be used in the present compositions. Furthermore, methods of preparing mixed-block copolymers are well known in the art.
A preferred styrene/ethylene/propylene (or butylene) tri-block copolymer consists of styrene, ethylene, and propyl
Curtis Ernest S.
Pahlck Harold E.
Shah Arvind N.
Avon Products Inc.
Dodson Shelley A.
George Konata M.
Ohlandt Greeley Ruggiero & Perle LLP
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