Nitrile group-containing highly saturated copolymer rubber
AssigneeZeon Corporation
InventorsDaizo Hosotani, Hiroyasu Nagamori, Shinya Ikeda
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Abstract
A nitrile group-containing highly saturated copolymer rubber having an iodine value of 80 or less and containing a caprate in 0.01 to 0.4 wt %. Preferably, the caprate is an alkaline earth metal caprate or Group XIII metal caprate. According to present invention, it is possible to provide a nitrile group-containing highly saturated copolymer rubber improved in mold fouling resistance while maintaining good normal state physical properties and heat resistance when being made into a cross-linked product.
Claims9
A nitrile group-containing highly saturated copolymer rubber having an iodine value of 80 or less and containing a caprate in 0.01 to 0.4 wt %.
A method of production of a nitrile group-containing highly saturated copolymer rubber having
- a step of emulsion polymerization using a caprate to obtain a latex of a nitrile group-containing copolymer rubber,
- a step of using an alkali earth metal salt or Group XIII metal salt to make said latex of a nitrile group-containing copolymer rubber coagulate to obtain a nitrile group-containing copolymer rubber, and
- a step of a hydrogenation reaction of said nitrile group-containing copolymer rubber.
Dependencies are inferred from the claim text.