US 7,321,011 B2
Self-emulsifying copolymer
Shao Xiang Lu, Plainsboro, N.J. (US); and Mohamed Kanji, Edison, N.J. (US)
Assigned to L'Oreal, Paris (France)
Filed on Jul. 21, 2003, as Appl. No. 10/622,689.
Prior Publication US 2005/0020769 A1, Jan. 27, 2005
Int. Cl. C08L 83/12 (2006.01)
U.S. Cl. 524—588  [528/31; 528/38; 528/26; 528/28; 528/41; 525/479; 556/444] 18 Claims
 
1. A composition comprising a physiologically acceptable medium and a copolymer comprising the chemical formula:

OG Complex Work Unit Drawing
where R is an oxyalkylene group selected from the group consisting of oxyethylene, oxypropylene, oxyisopropylene, and mixtures thereof, x is 1-40, each of y and z is 1-200, and w is 2-200, wherein the copolymer has emulsifying activity and the ratio of z/w is from 0.001 to 1000.