Fluororubber compositions and articles thereof
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsTakashi Matsuda, Yasuhisa Osawa, Noriyuki Koike, Yasunori Sakano
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Abstract
A crosslinkable fluororubber composition comprising (A) a polymer of the formula: Z-(Rf-Q)n-Rf-Z wherein n is an integer of at least 1, Rf is a divalent perfluoroalkylene or perfluorooxyalkylene radical, Q is a divalent organic radical, and Z is a monovalent organic radical, having a viscosity of at least 1,000 Pa·s at 25° C., (B) a reinforcing filler, and (C) a peroxide crosslinking agent is effectively roll milled and experiences minimal changes of viscosity after milling. Molded parts can be produced on a mass scale.
Claims5
A crosslinkable fluororubber composition comprising
- (A) 100 parts by weight of a polymer of the general formula (1):
- Z-(Rf-Q)n-Rf-Z (1)
- wherein n is an integer of at least 1, Rf is a divalent perfluoroalkylene or perfluorooxyalkylene radical, Q is a divalent organic radical, and Z is a monovalent organic radical, having a viscosity of at least 1,000 Pa·s at 25° C.,
- (B) 1 to 100 parts by weight of a reinforcing filler, and
- (C) an effective amount of a peroxide crosslinking agent.
Dependencies are inferred from the claim text.