Patent ID: 8242204

Claim:
An organic-inorganic nano composite which is a product formed by the reaction of a styrene-butadiene copolymer; an acryl-based monomer represented by Formula 1 below; a reversible-addition fragmentation (RAFT) living radical polymerization initiator; silica; and a coupling agent; wherein R 1 is a C 2 -C 4 alkenyl group, and R 2 is a C 1 -C 12 alkyl group or a hydrogen atom; the composite comprises 1 to 50 parts by weight of the acryl-based monomer, 0.1 to 3 parts by weight of the living radical polymerization initiator, 10 to 50 parts by weight of the silica, and 1 to 5 parts by weight of the coupling agent, based on 100 parts by weight of the styrene-butadiene copolymer.