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US 4,784,844 AGranted
Volatile silicone-water emulsions and methods of preparation and use
AssigneeGeneral Electric Company
InventorsRaymond J. Thimineur, Frank J. Traver
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Abstract
The present invention provides silicone-water emulsions formed from volatile cyclic polysiloxanes which are emulsified with a preblended mixture of water and a combination of emulsifying agents. Highly ethoxylated nonionic emulsifying agents are particularly well-suited for the formation of stable silicone-water emulsions from volatile cyclic polysiloxanes. These volatile silicone-water emulsions can be combined with epidermal enhancing agents for cosmetic and medicinal purposes.
Claims21
A silicone in water emulsion comprising:
- (A) 100 parts by weight of a cyclic polysiloxane or a combination of cyclic polysiloxanes of the formula:
- ##STR3## where n is an integer from 3 to 10, R is selected from the group consisting of --CH.sub.3, --(CH.sub.2).sub.z CH.sub.3, --CH.sub.2 CH.sub.2 CF.sub.3, --CH.dbd.CH.sub.2, and --C.sub.6 H.sub.5, and z is an integer from 1 to 10;
- (B) from 0.7 to 666 parts by weight of an emulsifier selected from the group consisting of ethoxylated fatty acids, ethoxylated and non-ethoxylated sorbitan esters, ethoxylated alkyl phenols, and ethoxylated ethers;
- and
- (C) from 5.0 to 960 parts by weight of water.
2 more elements
An epidermal composition comprised of:
- (A) 0.1 to 20,000 parts by weight of one or more epidermal enhancing agents wherein said epidermal enhancing agents are contained in a vehicle comprised of:
- (B) 100 parts by weight of a silicone-water emulsion wherein said emulsion is comprised of (i) 100 parts by weight of a cyclic polysiloxane or a combination of cyclic polysiloxanes of the formula:
- ##STR4## wherein n is an integer from 3 to 10, R is selected from the group consisting of --CH.sub.3, --(CH.sub.2).sub.z CH.sub.3, --CH.sub.2 CH.sub.2 CF.sub.3, --CH.dbd.CH.sub.2, and --C.sub.6 H.sub.5, and z is an integer from 1 to 10;
- and (ii) 0.7 to 666 parts by weight of an emulsifier and (iii) 5.0 to 960 parts water.
1 more element
Dependencies are inferred from the claim text.