Drug – bio-affecting and body treating compositions – Anti-perspirants or perspiration deodorants – Aluminum compound containing
Reexamination Certificate
2001-10-05
2002-08-20
Dodson, Shelley A. (Department: 1616)
Drug, bio-affecting and body treating compositions
Anti-perspirants or perspiration deodorants
Aluminum compound containing
C426S066000, C426S062000, C426S068000, C426S400000, C426S401000
Reexamination Certificate
active
06436382
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to suspension products that are useful to reduce underarm wetness. Optionally they can include antiperspirant and/or deodorant agents, but are particularly advantageous in providing deodorants that have reduced wetness without the use of an antiperspirant active. Reference is made to a case filed on the same day as this case and referenced as Ser. No. 09/971,978.
BACKGROUND OF THE INVENTION
A variety of technologies have attempted to use superabsorbent polymers of various types in a wide variety of applications. These technologies include the construction of diaper products for children and adults, and the use of superabsorbent polymers to clean up liquid spills. The problems associated with the use of such polymers in personal care applications include a wet and sticky feel and skin irritation. Additionally, it has been difficult to find a way of applying such products in the underarm area in a way that results in an aesthetically acceptable product form. It has now been found that selected water lock superabsorbent polymers in certain formulations both with and without antiperspirant or deodorant agents may be used to create superior anti-wetness products.
It is also desirable to have the ability to reduce wetness using a deodorant product. While some deodorants contain lesser amounts of antiperspirant actives, there is a segment of the population that prefers to use deodorants that do not contain antiperspirant actives. It would be advantageous to provide a product that reduces wetness without the use of antiperspirant actives.
BRIEF SUMMARY OF THE INVENTION
The invention comprises an underarm product suitable for use to reduce wetness under the arm. It may be viewed as providing some deodorancy effect. Optionally, a portion of an antiperspirant active may be included to provide an antiperspirant/deodorant. This underarm product is a suspension product which may be a stick or soft solid and which comprises a water lock superabsorbent polymer selected from the group consisting of starch graft homopolymers and copolymers of poly(2-propenamide-co-2-propenioic acid) sodium salt. While these homopolymers and copolymers may be used in a variety of particle sizes, it is generally believed that and copolymers may be used in a variety of particle sizes, it is generally believed that the smaller sizes are preferred (for example, having 95% of the particles able to go through a 200 mesh screen (comparable to a size of less than 75 microns)). The formulations of the invention may be made as antiperspirants and/or deodorants. In the case of antiperspirants, the products give an extra measure of protection against wetness. In the case of deodorants, the products may be made with low levels of antiperspirant active or with other agents which provide a deodorizing effect but which are not antiperspirant salts.
DETAILED DESCRIPTION OF THE INVENTION
Products formulated according to the invention comprise suspension products which are sticks or soft solids comprising:
(a) 0.01-20 weight % (particularly 0.1-10% and more particularly 0.5-5%) of a water lock superabsorbent polymer selected from the group consisting of starch graft homopolymers and copolymers of poly(2-propenamide-co-2-propenioic acid) sodium salt;
(b) 10-88 weight % of a volatile silicone having a flash point of 100 degrees C. or less (particularly a D4-D6 cyclomethicone; and especially a D5 or D6 cyclomethicone or a combination of D5 and D6 cyclomethicones);
(c) a gelling agent selected from the group consisting of 5-30 weight % stearyl alcohol; 0.1-10 weight % (on an actives basis) silicone elastomer; 0.1-20 weight % waxes (for example, Japan wax, hydrogenated castor oil); 1-3 weight % siliconized polyamides (especially of the type described below in Formula IIIA); 1-20 weight % low molecular weight polyethylene having a molecular weight in the range of 400-1000 (for example 400 such as Performalene-400 from New Phase Technology, Piscataway, N.J.) and combinations of the foregoing;
(d) 0-5 weight % of a surfactant with a hydrophilic/lipophilic balance (“HLB value”) in the range of 3-13 (for example, from 0.05-50 weight % (particularly 1-30%) of a silicone copolyol which is 10% in cyclomethicone, or its equivalent may be used for a soft solid);
(e) 0-10 weight % (particularly 5-10%) of an antiperspirant active or an effective amount of a deodorizing agent which is not an antiperspirant active;
(f) 0-20 weight % (particularly 5-10%) of a nonvolatile silicone having a flash point greater than 100 degrees C.; and
(g) 0-20 weight % (particularly 2-12%) of an emollient (for example, a member selected from the group consisting of C12-15 alkyl benzoate, PEG-8 distearate, PPG-3-myristyl ether, and polyisobutene 250).
While no water is recited as being added, up to 2 weight % water may be present because of the types of raw materials used.
With regard to the amount of volatile silicone used in the invention, 10-88 weight % is used for stick products and soft solids.
Optionally, one or more other ingredients can be used such as fragrance, coloring agents, antibacterial agents, masking agents, or fillers (for example, talc).
The antiperspirant actives that can be utilized according to the present invention include conventional aluminum and aluminum/zirconium salts, as well as aluminum/zirconium salts complexed with a neutral amino acid such as glycine (“gly”), as known in the art. See each of European Patent Application Number 512,770 A1 and PCT case WO 92/19221, the contents of each of which are incorporated herein by reference in their entirety, for disclosure of antiperspirant active materials. The antiperspirant active materials disclosed therein, including the acidic antiperspirant materials, can be incorporated in the compositions of the present invention. Suitable materials include (but are not limited to) aluminum chlorohydroxide, aluminum chloride, aluminum sesquichlorohydroxide, zirconyl hydroxychloride, and aluminum chlorohydrol-propylene glycol complex. These include, by way of example (and not of a limiting nature), aluminum chlorohydrate, aluminum chloride, aluminum sesquichlorohydrate, zirconyl hydroxychloride, aluminum-zirconium glycine complex (for example, aluminum zirconium trichlorohydrex gly, aluminum zirconium pentachlorohydrex gly, aluminum zirconium tetrachlorohydrex gly and aluminum zirconium octochlorohydrex gly), and mixtures of any of the foregoing. The aluminum-containing materials can be commonly referred to as antiperspirant active aluminum salts. Generally, the foregoing metal antiperspirant active materials are antiperspirant active metal salts. In the embodiments which are antiperspirant compositions according to the present invention, such compositions need not include aluminum-containing metal salts, and can include other antiperspirant active materials, including other antiperspirant active metal salts. Generally, Category I active antiperspirant ingredients listed in the Food and Drug Administration's Monograph on antiperspirant drugs for over-the-counter human use can be used. In addition, any new drug, not listed in the Monograph, such as tin or titanium analogues of the aluminum slats listed above, aluminum nitratohydrate and its combination with zirconyl hydroxychlorides and nitrates, or aluminum-stannous chlorohydrates, can be incorporated as an antiperspirant active ingredient in antiperspirant compositions according to the present invention. Preferred antiperspirant actives that can be incorporated in the compositions of the present invention include the enhanced efficacy aluminum salts and the enhanced efficacy zirconium/aluminum salt-glycine materials, having enhanced efficacy due to improved molecular distribution, known in the art and discussed, for example, in PCT No. WO92/19221, the contents of which are incorporated by reference in their entirety herein.
Antiperspirant actives can be incorporated into compositions according to the present invention in amounts in the range of 0-10% (on an anhydrous solids basis), preferably 5-10%, by wei
Chopra Suman
Fei Lin
Guenin Eric
Mattai Jairajh
Colgate-Palmolive Company
Dodson Shelley A.
Miano Rosemary M.
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