Nancy Watson King

US Patent:

61179159, Sep 12, 2000

Filed:

Dec 29, 1997

Appl. No.:

8/999428

Inventors:

Abel G. Pereira - Belleville NJ
Patrick Obukowho - Fords NJ
Manuel Gamez Garcia - Flemington NJ
Nancy King - Avis PA

Assignee:

Croda, Inc. - Parsippany NJ

International Classification:

B01F 1714
A61K 709
A61K 742

US Classification:

516 57

Abstract:

An oil-in-water emulsifier composition including between about 10 percent and about 70 percent by weight of a blend of mono- and diester phosphates of alkoxylated fatty alcohols containing between about 12 and 22 carbon atoms and alkoxylated with between about 1 and about 50 moles of an alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide and mixtures thereof, wherein the mono- and diester ratio is between about 10:90 and about 90:10; and between about 90 percent and about 30 percent by weight of a blend of mono- and di-ester phosphates of fatty alcohols containing between 12 and 22 carbon atoms, wherein the mono- and diester ratio is between about 10:90 and about 90:10. Emulsifying waxes, oil-in-water emulsions and microemulsions, and topical compositions formulated therefrom are also disclosed.