Patent ID: 7988953
Filing Date: 2011-08-02
Classification: A61K,A61Q,C08G

Abstract:
1. A cosmetic composition comprising a conjugate comprising a hyperbranched polymer covalently bonded to at least three UV absorbing chromophores having an UV absorption maximum λ max ≧270 nm selected from the group consisting of the moieties represented by general formulae: wherein Y is O or NR R R R Z is C R R wherein R′ is H, OH, straight or branched chain C and wherein in the above definition the symbol “┤” denotes the linkage to the hyperbranched polymer; or a moiety of benzophenone-3, benzophenone-4, 2,2′,4,4′-tetrahydroxy-benzophenone and 2,2′-dihydroxy-4,4′ dimethoxybenzophenone; and a cosmetically acceptable carrier, and wherein the hyperbranched polymer is the polycondensation or polyaddition reaction product of building blocks AB