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

1990-03-09

1992-03-03

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521144, C08L 4700, C08F21012

Patent

active

050933817

ABSTRACT:
A 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 (ML.sub.1+4 121.degree. C.) of from 135 to 200, and (c) containing the diolefin units giving an iodine value of from 10 to 36.
A sponge composition is also disclosed, comprising 100 parts by weight of the aforesaid copolymer and from 30 to 130 parts by weight of a plasticizer.

REFERENCES:
patent: 4252909 (1981-02-01), Honma et al.
patent: 4311628 (1982-01-01), Abdou-Sabet et al.
patent: 4490513 (1984-12-01), Minami et al.
patent: 4728692 (1988-03-01), Sezaki et al.
patent: 4866101 (1989-09-01), Iwasa et al.

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