abstract |
PROBLEM TO BE SOLVED: To provide a copolymer excellent in transparency, mechanical strength and heat resistance, having these in a well-balanced manner and generating less gelation, a resin composition containing the same, and such a copolymer. Provide a way. A polymer chain (A) having a polymer block (a1) having a unit derived from a diene and / or an olefin and a polymer block (a2) having a unit derived from an aromatic vinyl monomer, ) A copolymer having a unit derived from an acrylic monomer and a polymer chain (B) having a unit having a ring structure in the main chain, wherein the (meth) acrylic acid ester in the polymer chain (B) A copolymer characterized in that the content ratio of the unit derived from is 45% by mass or more and 98% by mass or less. 【Selection chart】 None |