Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Reexamination Certificate
2000-08-17
2002-11-05
Krass, Frederick (Department: 1614)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
C424S486000, C424S501000, C424S061000, C514S724000, C514S770000, C514S944000, C514S949000, C510S118000
Reexamination Certificate
active
06475496
ABSTRACT:
TECHNICAL FIELD
The invention is in the field of cosmetic compositions used for removing polymeric films from keratinous surfaces.
BACKGROUND OF THE INVENTION
Most often, it is desirable that cosmetic compositions applied to keratinous surfaces form some type of film on the keratinous surface. The tenacity and durability of the film formed depends on the type of cosmetic that is applied. For example, in nail enamel compositions, it is most desirable that the nail enamel film permanently adhere to the nail and be durable enough to withstand normal wear for at least several days. On the other hand, cosmetics such as eye or face makeup are generally worn for only one day and removed at the end of the day prior to retiring. Most cosmetic compositions that form a film on a keratinous surface contain at least one type of synthetic or natural film forming polymer which facilitates adhesion to the keratinous surface, and provides durability of the film while on the surface.
Cosmetic films can be removed from keratinous surfaces in a variety of ways. Certain cosmetics such as foundations, eye makeup, and the like can simply be washed off with water, or removed with commercially available makeup removers. Removal of cosmetic films formed by certain transfer resistant lipsticks or nail enamel may necessitate remover compositions containing certain types of solvents that are strong enough to dissolve the film formed by the cosmetic composition.
There are a number of problems with current commercial cosmetic remover compositions. The first is that most of such compositions are in the liquid form. Thus, if applied to the keratinous surface too generously, the remover may drip onto neighboring areas of the body, or onto clothing or household objects. This is not only uncomfortable for the user, but it may cause staining of clothing or objects as well. The second problem with commercially available removers is that they may be drying to the keratinous surface due to the presence of the inorganic solvents. The organic solvents, in turn, are necessary to effect removal of the cosmetic composition from the keratinous surface.
In order to eliminate the problem with dripping, various types of cosmetic remover compositions have been prepared in the gel form. These removers have a higher viscosity than the liquid removers, and will not readily drip off of the keratinous surface to which they are applied, or migrate from the area to which they are applied to other neighboring areas. Gelled remover compositions are not difficult to make, and a number of them are still commercially available. However, the problem still remains that these remover compositions do not exhibit any improvements in conditioning or moisturizing the keratinous surface. Rather, they tend to be the same drying formulas as the liquid formulas.
There is a need for cosmetic remover compositions which are gelled to a viscosity that permit easy application and minimizes dripping or migration, and at the same time provides superior moisturization and conditioning to the keratinous surface.
It is an object of the invention to provide cosmetic remover compositions in the gel form.
It is a further object of the invention to provide cosmetic remover compositions in the gel form and which also provide moisturizing and conditioning benefit to the keratinous surface.
It is a further object of the invention to provide a cosmetic remover composition gelled with a synthetic metal silicate gelling agent.
SUMMARY OF THE INVENTION
The invention is directed to an organic solvent based cosmetic remover composition gelled to a viscosity of 25 to 500,000 centipoise with a synthetic metal silicate gelling agent.
The invention is also directed to a method for gelling an organic solvent based cosmetic remover composition to a viscosity of 25 to 500,000 centipoise with a synthetic metal silicate gelling agent.
DETAILED DESCRIPTION
All percentages mentioned herein are percentages by weight unless otherwise indicated.
The term “cosmetic remover composition” means a composition that, when applied to a keratinous surface having a cosmetic film thereon, is capable of removing the cosmetic film from the keratinous surface in reasonable period of time. A reasonable period of time is the amount of time consumers traditionally allot for such makeup removal, and can range from fractions of a second up to one minute, possibly longer. The cosmetic remover composition may be applied by brushing onto the keratinous surface with a brush impregnated with the remover composition, or by impregnating an applicator with the remover composition and rubbing the keratinous surface having the cosmetic film thereon, or by dipping the keratinous surface into a remover composition one or more time to remove the film. An example of the latter type of removal is a container having the remover composition therein, in the form of a hard gel that is capable of exerting sufficient pressure on the keratinous surface dipped therein such that the film will be removed.
The term “organic solvent based” means that the cosmetic remover composition contains sufficient organic solvent to efficaciously remove the cosmetic film from the keratinous surface. The organic solvent based cosmetic remover composition may by anhydrous, or aqueous based.
The cosmetic remover composition remover composition comprises at least one organic solvent capable of removing the cosmetic film on the keratinous surface, and at least one synthetic metal silicate gelling agent as further described herein.
The Organic Solvent
The cosmetic remover composition is organic solvent based. Of the organic solvents used in the composition, at least one organic solvent should be capable of removing, either by itself, or when combined with other organic solvents, the cosmetic film on the keratinous surface. Suitable organic solvents are non-aqueous, and include hydrocarbons, organic alcohols, ketones, esters of organic alcohols, glycols, ethers, and the like. Preferably, one or more of the organic solvents are volatile, e.g. have a vapor pressure of at least 2 mm. of mercury at 20° C. The claimed composition comprises 0.5 to 95%, preferably 1-85%, more preferably 15-60% by weight of the total composition of one or more organic solvents.
Organic alcohols are suitable for use as the organic solvent in the claimed compositions, and include aliphatic or aromatic mono-, di- or trifunctional alcohols. Preferably, the organic alcohols are C
1-8
aliphatic mono- or difunctional alcohols, or C1-8 alkoxy alkyl alcohlols, or aromatic alcohols, such as ethanol, isopropanol, butanol, butylene glycol, ethylene glycol, propylene glycol, benzyl alcohol, butoxyethanol, butoxypropanol, butoxyisopropanol, and the like.
Suitable ketones are aliphatic or aromatic ketones having the general formula R—CO—R wherein each R is independently a C
1-8
alkyl, or benzyl, or R—CO—R forms a lactone. Examples of such ketones include acetone, propanone butyrolactone, methyl ethyl ketone, diacetone alcohol, and the like.
Suitable esters of organic alcohols include C1-8 aliphatic or aromatic acids, reacted with C1-8 aliphatic mono-, or difunctional, or aromatic, alcohols. Examples of such alcohols include butyl acetate, ethyl acetate, benzyl acetate, benzyl benzoate, benzyl glycol, butylene glycol propionate, butyl octanol, dibutyl adipate, dibutyl oxalate, dibutyl phthalate, dibutyl sebacate, isobutyl acetate, isoamyl acetate, and the like.
Suitable ethers include those of the formula R—O—R wherein each R is independently a C1-10 alkyl, a C1-10 alkoxy alkyl, or benzyl. Suitable examples of such ethers include methyl ether, ethyl ether, propyl ether, benzyl glycol, butoxydiglycol, and the like.
Also suitable are various straight or branched chain paraffinic hydrocarbons having 5 to 20 carbon atoms, more preferably 8-20 carbon atoms. Suitable hydrocarbons include pentane, hexane, heptane, decane, dodecane, tetradecane, tridecane, and C
8-20
isoparaffins as disclosed in U.S. Pat. Nos. 3,439,088 and 3,818,105, both of which are hereby incorporated by reference. Prefer
Arminas Scott Arnold
Calello Joseph Frank
Blackburn Julie
Krass Frederick
Ostrup Clinton
Revlon Consumer Products Corporation
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