Preparation of antiperspirant gels which obviates the use of simple glycols

• US 6,419,910 B2
• Filed: 05/11/2001
• Issued: 07/16/2002
• Est. Priority Date: 05/12/2000
• Status: Expired due to Fees

• Current Assignee: Unilever Home & Personal Care Usa Division Of Conopco, Inc.
• Original Assignee: Unilever Home & Personal Care Usa Division Of Conopco, Inc.
• Inventors: Scafidi, Anthony Aloysius, Ma, Zhuning, Brewster, David Allen
• Primary Examiner(s): Dodson, Shelley A.
• Application Number:
  US09/854,371
• Publication Number:
  US 20010055575A1
• Time in Patent Office: 431 Days
• Field of Search: 424/65, 424/66, 424/68, 424/400, 424/401
• US Class Current: 424/65
• CPC Class Codes: A61K 2800/262 Transparent; Translucent
• CPC Class Codes: A61K 8/042 Gels
• CPC Class Codes: A61K 8/06 Emulsions
• CPC Class Codes: A61K 8/064 Water-in-oil emulsions, e.g. Water-in-silicone emulsions
• CPC Class Codes: A61K 8/585 Organosilicon compounds
• CPC Class Codes: A61K 8/894 modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol
• CPC Class Codes: A61Q 15/00 Anti-perspirants or body deodorants deodorisation of air A61L9/00

Abstract

A clear emulsion and gel-type composition, which is an antiperspirant or deodorant composition which is a water-in-oil emulsion which comprises:

a clear emulsion and gel-type cosmetic composition which is an antiperspirant and/or deodorant composition, which is a water-in-oil emulsion comprising:

a) about 65% to about 92% of an aqueous solution of an effective amount of antiperspirant active;

b) about 8% to about 35% of an oil phase consisting of silicones, emollients and a silicone emulsifying agent; and

c) a water soluble, non-glycol component that raises the refractive index of said aqueous solution,

wherein said composition is essentially free of simple glycols and low and middle chain alcohols;

is described.

Claims

1. A clear emulsion and gel cosmetic composition which is an antiperspirant and/or deodorant composition, which is a water-in-oil emulsion comprising:

a) about 65% to about 75% of an aqueous solution of an effective amount of antiperspirant active;

b) about 25% to about 35% of an oil phase consisting of silicones, emollients, and a silicone emulsifying agent, and comprising at least one volatile silicone, at least one non-volatile ester or at least one nonvolatile silicone, and wherein at least one oil phase soluble ingredient has a refractive index of about 1.40 to about 1.45;

c) about 0.01 to about 8.5% of a coupling agent; and

d) at least one polymeric ethylene oxide glycol adduct which component raises the refractive index of said aqueous solution, and optionally another water soluble, non-simple glycol component which raises the refractive index of said aqueous solution;

wherein said composition is essentially free of glycols and low and middle chain alcohols.

2. A composition according to claim 1, wherein said non glycol compound is selected from the group consisting of glycine, alanine, d1-trytophan;

monovalent, divalent, trivalent salts including sodium chloride, sodium sulfate, calcium chloride, calcium sulfate, magnesium chloride, aluminum salts and mixtures thereof;

sodium lactate, aluminum lactate, zinc lactate, magnesium lactate, aluminum chloride, acetamide MEA and lactamide MEA; and

urea and zinc glycinate.

3. A composition according to claim 1;

wherein the refractive indices of said water phase and said oil phase are matched to within about 0.0008.

4. A composition according to claim 1, wherein the refractive indices of said water phase and said oil phase are matched to within about 0.0004.

5. A composition according to claim 1, which has a turbidity of about 50 NTU or less at about 21°

C.

6. A composition according to claim 1, wherein the oil phase can range from about 30% to about 10%.

7. A composition according to claim 1, wherein the oil phase comprises a volatile silicone from about 1% to about 20%.

8. A composition according to claim 1, wherein the oil phase comprises a non-volatile silicone from about 9% to about 25%.

9. A composition according to claim 1 wherein the final refractive index is about 1.3993 to about 1.4200.

10. A method for controlling or preventing odor or perspiration which comprises topically applying an effective amount of a composition according to claim 1 to the underarm area.