Chlorosulfonated ethylene. alpha -olefin copolymer composition containing hydrotalcite

摘要

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 10 to 35 parts by weight of a hydrotalcite, (c) from 0.5 to 5 parts by weight of a thiuram, and (d) 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.