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.

公开(公告)号：US20210324138A1

公开(公告)日：2021-10-21

申请号：US16490210

申请日：2018-03-27

Applicant: OSAKA SODA CO., LTD.

Inventor： Kazuki UNO ,  Yoritaka YASUDA ,  Naoya YAJIMA ,  Shinichi UDO

IPC: C08G65/24 ,  C08G65/08

Abstract: A polyether electrical-resistance adjusting agent of the present invention comprises a polymer that contains 10 to 60 mol % of a structural unit derived from an epihalohydrin (a), 30 to 89 mol % of a structural unit derived from an alkylene oxide (b), and 1 to 15 mol % of a structural unit derived from an ethylenically unsaturated group-containing monomer (c), and that has a weight-average molecular weight of 1,300,000 or less.