Acrylic rubber composition

C - Chemistry – Metallurgy – 08 – L

Patent

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C08L 33/08 (2006.01) C08F 220/16 (2006.01) C08F 220/18 (2006.01) C08J 3/24 (2006.01) C08K 5/00 (2006.01) C08K 5/14 (2006.01) C08K 5/17 (2006.01) C08L 23/08 (2006.01) C08L 29/10 (2006.01) C08L 31/04 (2006.01) C08L 33/02 (2006.01) C08L 33/14 (2006.01) C08L 35/02 (2006.01) F01M 11/02 (2006.01)

Patent

CA 1294732

ABSTRACT OF THE DISCLOSURE . An acrylic rubber composition comprising (A) a copolymer and (B) a crosslinking agent, said copolymer (A) consisting essentially of (a) from 3 to 10% by weight of ethylene, (b) from 0 to 10% by weight of at least one crosslinkable monomer selected from the group consisting of monomers of the formulas (1), (2), (3) and (4): (1) Image wherein R1 is hydrogen or methyl, (2) Image wherein R2 is vinyl, allyl or methallyl, (3) Image wherein R3 is hydrogen or methyl, R4OOC-CH=CH-COOH (4) wherein R4 is methyl, ethyl, propyl, butyl, methoxymethyl, methoxyethyl, methoxypropyl, methoxybutyl, ethoxybutyl, ethoxyethyl, ethoxypropyl or ethoxybutyl, and (c) from 80 to 97% by weight of other copolymer component, said other copolymer component (c) consisting essentially of (i) from 0 to 10% by weight of vinyl acetate, (ii) from 20 to 45% by weight of ethyl acrylate and (iii) from 45 to 70% by weight of n-butyl acrylate, the total amount of constituents (i), (ii) and (iii) being 100% by weight.

569572

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