公开(公告)号：US20210309846A1

公开(公告)日：2021-10-07

申请号：US17267195

申请日：2019-08-08

Applicant: OSAKA SODA CO., LTD.

Inventor： Ryo OKADA ,  Shinichi UDO ,  Motoki KITAGAWA ,  Masatsugu NAITOU

IPC: C08L33/08 ,  C08F220/18 ,  C08F222/40

Abstract: It is an object of the present invention to provide an acrylic copolymer for providing a highly heat-resistant rubber material that shows a small rate of change in strength without loss of elongation, even under a high-temperature condition over a long period, and a composition containing the acrylic copolymer. The present invention provides an acrylic copolymer comprising a structural unit (A) derived from a monomer containing a structure having a maleimide skeleton, a structural unit (B) derived from an acrylic acid alkyl ester and/or a structural unit (B) derived from an acrylic acid alkoxyalkyl ester, and a structural unit (C) derived from an unsaturated monomer having a crosslinking group; a composition comprising the acrylic copolymer and a crosslinking group; and a rubber material produced from the composition.