Acrylic rubber

Abstract

Abstract PURPOSE:To make it possible to increase the tensile strength and compression set of the obtained acrylic rubber, by specifying the MW and its distribution of the acrylic rubber which is a copolymer comprising an acrylic ester, an unsaturated carboxylic acid ester containing a dihydrodicyclopentenyl group and an unsaturated compound such as another monovinyl compound. CONSTITUTION:This acrylic rubber is a copolymer of a monomer composition comprising 60-99.9wt% at least one compound (A) selected from an alkyl acrylate and an alkoxyalkyl acrylate, 0.1-20wt% unsaturated carboxylic acid ester (B) containing a dihydrodicyclopentenyl group and 0-20wt% at least one (B) selected from among other monovinyl, monovinylidene and monovinylene unsaturated compounds. This copolymer has a number-average MW (Mn), in terms of polystyrene, of 200,000-1,200,000 and a ratio of a weight-average MW (Mm) to a number-average MW (Mn) <=10.

Inventors

• 👤 Toshio Ohara
• 👤 大原　敏男
• 👤 Shinichiro Zen
• 👤 信一郎 膳
• 👤 Koji Nobuyo
• 👤 延与　弘次
• 👤 Yasuhiko Takemura
• 👤 竹村　泰彦

Bibliographic Details