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Sunscreen composition with enhanced UV-A absorber stability and methods
专利权人:
James A. Roszell
发明人:
James A. Roszell,Jie Zhang
申请号:
US12316121
公开号:
US08128913B1
申请日:
2008.12.08
申请国别(地区):
US
年份:
2012
代理人:
摘要:
A sunscreen composition is provided according to the present invention. The sunscreen composition includes a skin bonding polymer composition comprising a hydrophobic polymer/hydrophilic polymer adduct, at least one sunscreen active agent comprising a UV-A absorber, and water in an amount of affected to provide a the composition with the texture suitable for application to skin. The hydrophobic polymer/hydrophilic polymer adduct comprises: (i) hydrophobic polymer composition comprising a mixture of a lower poly(vinylpyrrolidone/alkylene) polymer wherein the alkylene group contains about 10 to about 24 carbon atoms and a higher poly(vinylpyrrolidone/alkylene) polymer wherein the alkylene group contains greater than about 24 carbon atoms and (ii) hydrophilic polymer composition comprising carboxylic acid groups, hydroxyl groups, or both carboxylic acid groups and hydroxyl groups.
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