Block copolymer and polymer composition comprising the same

Details Block copolymer and polymer composition comprising the same Block copolymer and polymer composition comprising the same

C - Chemistry, Metallurgy

08

F

C08F 297/00 (2006.01) C08F 297/02 (2006.01) C08L 53/00 (2006.01)

Patent

CA 2276568

A block copolymer comprising, in a main chain thereof, a crystalline polymer block A obtained by hydrogenation of at least 80% of unsaturated bonds of a butadiene-based polymer block having a 1,2-bond content less than 20%, a polymer block B having a glass transition point of 20 ° C or lower and a polymer block C composed mainly of a methacrylate ester unit and/or an acrylate ester unit and having a glass transition point exceeding 20 °C has good elastomeric properties, excellent weather resistance, solvent resistance and heat resistance and has good affinity with each of a polar polymer and non-polar polymer. A polymer composition comprising said block copolymer effectively exhibits the above-described characteristics of the block copolymer.

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