Claims
- 1. A cosmetic or pharmaceutical homogeneous water-in-oil emulsion of improved stability which is free of water-swellable clay mineral and cationic surfactants and has a viscosity of 0.1 Pa.sec to 10 Pa.sec, said emulsion containing:
- (a) from 15 to 40 percent by weight based on the total weight of said emulsion of a fatty phase containing a silicone selected from the group consisting of an optionally functionalized linear polyorganosiloxane, a cyclic polydiorganosiloxane, an organosiloxane and mixtures thereof, in an amount ranging from 15 to 40 percent by weight based on the total weight of said emulsion,
- (b) an aqueous phase containing an organic aqueous gelling agent being insensitive to electrolytes selected from the group consisting of a polysaccharide, a protein, a protein hydrolysate, an acrylic or methacrylic polymers, and a mixture thereof, said organic aqueous gelling agent being present in an amount ranging from 0.1 to 5 percent by weight based on the total weight of said emulsion, and
- (c) from 0.5 to 10 percent by weight based on the total weight of said emulsion of an emulsifying agent having the formula ##STR10## wherein X is hydrogen, C.sub.1 -C.sub.16 alkyl, C.sub.1 -C.sub.16 alkoxy or C.sub.1 -C.sub.16 acyl,
- Y is C.sub.8 -C.sub.22 alkyl or C.sub.8 -C.sub.22 alkoxy,
- n=0 to 200,
- m=1 to 40,
- q=1 to 100,
- the molecular weight of the residue (C.sub.2 H.sub.4 O).sub.x (C.sub.3 H.sub.6 O).sub.y X ranging from 200 to 2000, and x and y are selected such that the weight ratio of the oxyethylene to oxypropylene groups is between 100:0 and 20:80; said emulsion meeting the stability standard of resistance to ageing for 3 months at 45.degree. C. and 4.degree. C.
- 2. The emulsion of claim 1 having a viscosity ranging from 0.2 Pa.sec. to 6 Pa.sec.
- 3. The emulsion of claim 1 wherein said linear polydiorganosiloxane has the formula ##STR11## wherein x is --CH.sub.3 or OH and
- n=0 to 5000.
- 4. The emulsion of claim 1 wherein said cyclic polydiorganosiloxane has the formula ##STR12## wherein n is an integer ranging from 3 to 8.
- 5. The emulsion of claim 1 wherein said organosiloxane is selected from the group consisting of an alkyldimethicone, an alkoxydimethicone and a phenyldimethicone.
- 6. The emulsion of claim 1 wherein said fatty phase also contains a non-silicone oil in an amount ranging from 0.1 to 25 percent by weight based on the total weight of said emulsion.
- 7. The emulsion of claim 1 wherein said emulsifying agent is present in an amount ranging from 2 to 6 percent by weight based on the total weight of said emulsion.
- 8. The emulsion of claim 1 wherein said fatty phase contains an oily gelling agent selected from the group consisting of a metal salt of a C.sub.8 to C.sub.22 fatty acid, an ester of a fatty acid and glycol, a mixture of C.sub.14 to C.sub.32 fatty alcohols, a silicone wax, a cholesterol derivative and a mixture thereof.
- 9. The emulsion of claim 8 wherein said oily gelling agent is present in an amount ranging from 0.1 to 10 percent by weight based on the total weight of said emulsion.
- 10. The emulsion of claim 1 wherein said emulsion also contains a member selected from the group consisting of a glycerol ester, a glycerol ether and a dispersion of oxyethylenated polydimethylsiloxane in a cyclodimethylsiloxane having a HLB between 2 and 7, present in an amount ranging from 0.01 to 5 percent by weight based on the total weight of said emulsion.
- 11. The emulsion of claim 1 wherein said fatty phase also contains a fat-soluble adjuvant selected from the group consisting of a lipophilic UV screening agent, a lipophilic vitamin, an antioxidant and a perfume.
- 12. The emulsion of claim 1 wherein said aqueous phase also contains a water-soluble substance selected from the group consisting of a hydrating agent, a lubricant, a texturing agent, a hydrophilic UV screening agent, a trace element and a biological derivative.
- 13. The emulsion of claim 1 which is free from a preservative.
- 14. The emulsion of claim 1 which also contains a pigment.
- 15. The emulsion of claim 1 wherein said pigment is coated with a hydrophilic or hydrophobic substance.
- 16. The emulsion of claim 15 wherein said hydrophilic or hydrophobic substance is selected from the group consisting of polyethylene, lecithin, an amino acid salt, poly(methyl methacrylate), triisostearoyl titanate and collagen.
Priority Claims (1)
Number |
Date |
Country |
Kind |
92 00816 |
Jan 1992 |
FRX |
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Parent Case Info
This is a Continuation-in-Part of prior Application Ser. No. 585,869 filed Jan. 16, 1996 now abandoned which is a Rule 60 Continuation of Application Ser. No. 08/122,420, filed Jan. 7, 1994 now abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0331833 |
Sep 1989 |
EPX |
0374332 |
Jun 1990 |
EPX |
2243780 |
Nov 1991 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
122420 |
Jan 1994 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
585869 |
Jan 1996 |
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