Drug – bio-affecting and body treating compositions – Anti-perspirants or perspiration deodorants
Reexamination Certificate
2001-10-05
2002-11-26
Dodson, Shelley A. (Department: 1616)
Drug, bio-affecting and body treating compositions
Anti-perspirants or perspiration deodorants
C424S400000, C424S401000
Reexamination Certificate
active
06485716
ABSTRACT:
FIELD OF THE INVENTION
The present invention is directed to a high efficacy gel composition which is a low viscosity liquid emulsion, is elastomer-free, and which comprises an antiperspirant active (preferably with a lower metal to chloride ratio) and a reduced amount of surfactant. Preferably the gel is formulated as a clear product. The product comprises antiperspirant active materials in amounts sufficient to combat body malodor either as a deodorant or as an antiperspirant when applied to the axillary regions of the body.
The present invention is particularly directed to elastomer-free cosmetic gel compositions, including antiperspirant and deodorant gel compositions, that have reduced whitening and tack, and reduced skin irritation, and which can include increased amounts of the cosmetically active ingredient (for example, increased amounts of antiperspirant active ingredient), and yet which can be effective with low levels of active as well.
BACKGROUND OF THE INVENTION
Antiperspirant products are well known in the art. Antiperspirants have appeared in the marketplace in varied dosage forms, such as sticks, soft solids, soft gels, roll-on, aerosols and creams. Generally, these dosage forms include a solution of the active ingredient in a suitable solvent, a suspension of the active ingredient in a non-solvent, or a multiphasic dispersion or emulsion in which a solution of the active ingredient is dispersed in some continuous phase or in which the solubilized active ingredient constitutes a continuous phase.
Of the above-referred-to dosage forms, the stick form is an example of a solid form, and the soft solid and soft gel are thickened forms which may or may not be solid (for example, under some circumstances, gels can flow). The stick form can be distinguished from a soft solid or soft gel in that, in a stick, the formulated product can retain its shape for extended time periods outside the package, the product not losing its shape significantly (allowing for some shrinkage due to solvent evaporation). Adjustment of amounts of gelling or thickening agents can be used in order to form a soft gel or stick.
Soft gels or soft solids can be suitably packaged in containers which have the appearance of a stick, but which dispense through apertures (for example, slots or pores) on the top surface of the package. The soft solid products have also been called soft sticks or “smooth-ons”, and hereinafter are generically called “soft solids”. Reference is made to U.S. Pat. No. 5,102,656 to Kasat, U.S. Pat. No. 5,069,897 to Orr, and U.S. Pat. No. 4,937,069 to Shin, each of which discloses such soft solids, including physical characteristics thereof such as viscosity and hardness. The contents of each of these three U.S. Patents are incorporated herein by reference in their entirety.
Recently, there has been significant activity in developing clear and translucent antiperspirant sticks and soft gels, particularly to provide sticks and soft gels having increased efficacy (for example, by providing increased amounts of the antiperspirant active in the sticks and soft gels), improved cosmetic characteristics (including reduced whitening, reduced residue and reduced tack), and reduced skin irritation potential (e.g., providing a product that is “mild”).
U.S. Pat. No. 4,944,938 to Potini discloses clear, non-alcoholic, quick drying, antiperspirant and deodorant gels, which are stable both at room temperatures and at higher temperatures, are non-stinging and leave no white residue on the skin, the gel not including gelling agents, waxes, clays, or monohydric alcohols having 2-8 carbon atoms. The gels use 3-5 carbon atom trihydric alcohols as coupling agents, these alcohols acting as solublizers in the system and keeping the system stable and clear. The gels can include an aluminum active salt; a volatile water-insoluble emollient, such as isostearyl benzoate: a soluble emollient such as cetyl ether; solubilizers such as propylene glycol and glycerin; volatile siloxanes; and water.
Some cellulosic materials, such as hydroxypropylcellulose, among others, are compatible with polyvalent metal salts and have been used in the manufacture of clear lotions. These cellulosic materials, however, must be prepared with a high percentage of water or alcohol in order to insure solubilization of the active ingredient. The resulting formulations, in addition to a high irritation potential, are tacky and putties, and low in efficacy, when alcohol-based; and exhibit tackiness and along drying time when water-based.
Clear or translucent antiperspirant soft gels (which have been dispensed from containers having the appearance of stick) have recently been marketed, consisting of viscous, high-internal-phase emulsions. These soft gels exhibit some advantages over the aforementioned sticks, particularly acetal-based clear sticks, in that the selection of formulation ingredients is less restricted (for example, water can be used), and often tack can be reduced significantly. Concerning these emulsions, note U.S. Pat. No. 4,673,570 to Soldati and U.S. Pat. No. 4,900,542 to Parrotta, et al. These two U.S. patents disclose clear gelled antiperspirant compositions free of waxes and conventional gelling agents, containing a volatile silicone fluid, a silicone emulsifier, a destabilizing auxiliary emulsifier, water, non-volatile emollient, a coupling agent, an active antiperspirant component and ancillary agents such as perfume, coloring agents, etc. The silicone emulsifiers a cyclomethicone-dimethicone copolyol silicone fluid marketed by Dow Corning Corporation under the trademark DOW CORNING 3225C formulation. The contents of these two U.S. patents are incorporated herein by reference in their entirety.
Also to be noted is PCT (International application) Publication No. WO 92105767. This patent document discloses a clear gel-type cosmetic product having a viscosity of at least about 50,000 cps at 21 degrees C. and a refractive index of 1.3975-1.4025 at 21 degrees C., and having an optical clarity better than 50 NTU (Nephelometric Turbidity Units) at 21 degrees C., the product being an emulsion with a water phase having an active ingredient incorporated therein and with an oil phase. The refractive indices (measured at 5893 Angstroms) of the water and oil phases match to within 0.0004. The oil phase includes an emulsifier which when properly mixed with the water phase component yields a water-in-oil emulsion, and the water phase includes one or a combination of various polar species such as water, propylene glycol, sorbitol and ethanol. The water phase includes the deodorant and/or antiperspirant active ingredient. The contents of this PCT (International application) Publication No. 92/05767 are incorporated herein by reference in their entirety.
U.S. Pat. No. 6,007,799 describes clear cosmetic gels that are water-in-oil emulsions and which comprise at least one coupling agent, silicone fluids and an alkoxylated, alkyl substituted silicone surface active agent.
U.S. Pat. Nos. 5,587,153 and 5,863,525 issued to Gillette also describe gel products that contain silicone.
U.S. Pat. No. 6,007,799 assigned to the same owner as this case describes a clear cosmetic gel made as a water-in-oil emulsion.
While various cosmetic gel compositions, including antiperspirant and deodorant compositions, that are clear, are known, it is still desired to provide a cosmetic liquid gel composition (e.g., clear antiperspirant and/or deodorant gel composition) which has improved efficacy in comparison to other products, especially other commercially available gel products. It is a further object of the invention to provide products which have reduced whitening, low tack, and reduced skin irritation potential relative to commercially available products. It is yet another object of the invention to provide gel antiperspirant/deodorant products which provide improved efficacy even with low levels (for example, 5 weight % based on the entire composition) of antiperspirant active, use reduced amounts of volatile silicones and copolyols, have impro
Chopra Suman
Fei Lin
Guenin Eric
Hilliard, Jr. Peter
Mattai Jairajh
Colgate-Palmolive Company
Dodson Shelley A.
Miano Rosemary M.
LandOfFree
High efficacy liquid gel product does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High efficacy liquid gel product, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High efficacy liquid gel product will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2972483