Patent ID: 8901218
Filing Date: 2014-12-02
Classification: C08F,C08L

Abstract:
1. A branched (meth)acrylate copolymer prepared by polymerizing a monomer mixture comprising (A) about 20 to less than about 99.999% by weight of a (meth)acrylate monomer having a refractive index higher than methyl methacrylate, wherein said (meth)acrylate monomer having a refractive index higher than methyl methacrylate (A) has a refractive index of more than about 1.49 but not more than about 1.59; (B) greater than about 0 to about 79.999% by weight of a mono-functional unsaturated monomer comprising a C1-C8 alkyl methacrylate; C1-C8 alkyl acrylate; acid anhydride monomer; (meth)acrylamide monomer; unsaturated nitrile monomer; allyl glycidyl ether; glycidyl methacrylate; aromatic vinyl monomer; or a combination thereof; and (C) about 0.001 to about 10% by weight of a crosslinking monomer comprising a silane compound; siloxane compound; aromatic crosslinking monomer; vinyl group-containing monomer; allyl compound; or a combination thereof, wherein the weight average molecular weight of the branched (meth)acrylate copolymer is from about 500,000 to about 5,000,000.