Chlorosulfonated ethylene-–-olefin copolymer composition

C - Chemistry – Metallurgy – 08 – L

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400/9327

C08L 23/34 (2006.01) C08K 3/22 (2006.01) C08K 5/3415 (2006.01) C08K 5/40 (2006.01)

Patent

CA 1323130

ABSTRACT OF THE DISCLOSURE A chlorosulfonated ethylene?.alpha.-olefin copolymer composition is disclosed, comprising (a) 100 parts by weight of a chlorosulfonated ethylene?.alpha.-olefin copolymer containing from 25 to 32% by weight chlorine and from 0.3 to 2.5% by weight sulfur, (b) from 1 to 4 parts by weight of a metal oxide or a metal hydroxide, (c) from 3 to 15 parts by weight of an epoxy compound, (d) from 0.5 to 5 parts by weight of a thiuram, and (e) from 0.5 to 5 parts by weight of a maleimide. The chlorosulfonated ethylene?.alpha.-olefin copolymer of the invention provides vulcanized products having excellent heat resistance, cold resistance and water resistance.

561912

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