Rubber for sponge and rubber composition for sponge

Details Rubber for sponge and rubber composition for sponge Rubber for sponge and rubber composition for sponge

C - Chemistry, Metallurgy

08

F

402/420, 400/906

C08F 210/00 (2006.01) C08F 210/18 (2006.01) C08F 232/04 (2006.01) C08F 236/00 (2006.01) C08F 236/20 (2006.01) C08J 9/06 (2006.01) C08L 19/00 (2006.01) C08L 23/16 (2006.01)

Patent

CA 2011543

ABSTRACT OF THE DISCLOSURE A rubber for sponge is disclosed, comprising a copolymer of ethylene, an .alpha.-olefin, and a diolefin, said copolymer (a) containing the ethylene units and the .alpha.- olefin units at a weight ratio of from 73:27 to 40:60, (b) having a Mooney viscosity (ML1+4121°C) of from 135 to 200, and (c) containing the diolefin units giving an iodine value of from 10 to 35. A rubber composition for sponge is also disclosed, comprising 100 parts by weight of the aforesaid copolymer and from 30 to 130 parts by weight of a plasticizer.

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