Claims
- 1. An oil-in-water cosmetic composition, prepared by:
- (A) heating a mixture comprising
- (i) an oil selected from the group consisting of liquid paraffin, mineral oil, squalane, petroleum jelly, lower alcohol esters of fatty acids, jojoba oil, whale oil, glycerides of fatty acids, liquid acetate esters of fatty alcohols, aloe, vitamins, and mixtures thereof;
- (ii) a fat selected from the group consisting of higher fatty acids, cholesterol, cholesterol fatty acid esters, ceramides and compounds having the following formula (I): ##STR8## wherein R.sup.1 is a linear or branched, saturated or unsaturated hydrocarbon group having 10 to 26 carbon atoms, and R.sup.2 is a linear or branched, saturated or unsaturated hydrocarbon group having 9 to 25 carbon atoms, and mixtures thereof, said fat being present in at least 70 wt. % of the total of said oil and said fat;
- (iii) an emulsifying agent and
- (iv) a portion of from 0.1 to 5% of an aqueous medium selected from the group consisting of water and a combination of water and a water-soluble monohydric alcohol, at a temperature of from 60.degree. C. to 80.degree. C. for a length of time sufficient to provide a uniform solution; and
- (B) emulsifying said uniform solution with the balance of said aqueous medium.
- 2. An oil-in-water cosmetic composition according to claim 1, wherein said oil is a liquid at 25.degree. C., and said fat is solid at 25.degree. C.
- 3. An oil-in-water cosmetic composition according to claim 1, wherein fat further comprises at least one member selected from the group consisting of hydrocarbons, wax esters, glycerides of fatty acids and higher alcohols.
- 4. An oil-in-water cosmetic composition according to claim 1, wherein the amount of said mixture of oil and fat is from 0.5 to 20 wt. % of the total weight of said cosmetic composition.
- 5. An oil-in-water cosmetic composition according to claim 1, wherein the amount of said lipid is form 2 to 20 wt. % of the total weight of said cosmetic composition.
- 6. An oil-in-water cosmetic composition according to claim 1, wherein said emulsifying agent is a surface active agent of a polyoxyethylene alkyl ether phosphoric acid type having the following formula: ##STR9## wherein R is a hydrocarbon group of from 8 to 36 carbon atoms,
- n is a number of 1 to 10 on the average, and
- X is an inorganic or organic cation.
- 7. An oil-in-water cosmetic composition according to claim 6, wherein X is an inorganic cation.
- 8. A method for the preparation of an oil-in-water cosmetic composition set forth in claim 1, wherein said oil and said fat are a mixture, said fat being present in at least 70 wt. % of said mixture, and at least 50 wt. % of said fat is at least one lipid.
- 9. The composition of claim 1, wherein said ceramide is a sugar ceramide.
- 10. A method for the preparation of an oil-in-water cosmetic composition, comprising the steps of:
- (a) mixing an oil, a fat, an emulsifying agent and a portion of an aqueous medium at a temperature of from 60.degree. C. to 80.degree. C., for a length of time sufficient to provide a uniform solution, said portion of said aqueous medium being from 0.1 to 5 wt. % of the amount of said aqueous medium to be included in said cosmetic composition; and
- (b) emulsifying said uniform solution with the balance of said aqueous medium.
- 11. The oil-in-water cosmetic composition of claim 1, wherein said mixture further comprises (v) from 0.5 to 10% by weight of the composition of a water-soluble polyhydric alcohol.
- 12. The oil-in-water cosmetic composition of claim 1, wherein said aqueous medium is water, and said aqueous medium further comprises a water-soluble polyhydric alcohol.
Priority Claims (1)
Number |
Date |
Country |
Kind |
229877 |
Aug 1990 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 07/746,989, filed on Aug. 19, 1991, now abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
4348415 |
Tsutsumi et al. |
Sep 1982 |
|
4370319 |
Chapin et al. |
Jan 1983 |
|
5028416 |
Yano et al. |
Jul 1991 |
|
Foreign Referenced Citations (4)
Number |
Date |
Country |
015030 |
Sep 1980 |
EPX |
028457 |
May 1981 |
EPX |
277641 |
Aug 1988 |
EPX |
391124 |
Oct 1990 |
EPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
746989 |
Aug 1991 |
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