Patent ID: 7888447
Filing Date: 2011-02-15
Classification: C08G,C08L

Abstract:
1. A polycarbonate-polysiloxane copolymer comprising structural units of the formula wherein each R l , R 2 , and R 3 is independently the same or different monovalent C 1-13 hydrocarbon group, G comprises a monovalent C 6-1000 poly(oxyalkyl) group attached to the silicon atom via a divalent C 2-20 hydrocarbon linking group, each R 4 and R 5 taken together is independently the same or different divalent C 3-30 hydrocarbon linking group wherein R 4 is a C 1-28 hydrocarbon and R 5 is a C 2-29 aliphatic group, a is 0 or greater, and b is one or greater; and structural units of the formula wherein each R is independently the same or different C 1-60 divalent hydrocarbon group, and at least 60% of the R groups comprise an aromatic moiety.