Crosslinked chlorinated polyethylene foam

Details Crosslinked chlorinated polyethylene foam Crosslinked chlorinated polyethylene foam

1978-10-16

1980-09-02

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

2041592, 264 22, 264 51, 264 54, 264 85, 264175, 264176R, 264319, 264DIG18, 521 90, 521 95, 521145, 521915, C08J 906

Patent

active

042207304

ABSTRACT:
A crosslinked, soft, flexible, closed-cell foam of chlorinated high density polyethylene and a process for the preparation thereof, comprising admixing a high density chlorinated polyethylene with a thermally decomposable chemical foaming agent at a temperature below the decomposition temperature of said foaming agent, molding the chlorinated high density polyethylene into desired form at a temperature below the decomposition temperature of the foaming agent, subjecting the molded chlorinated high density polyethylene to irradiation cross-linking at a temperature below the decomposition temperature of said foaming agent and contacting, in a substantially oxygen-free environment, the crosslinked chlorinated high density polyethylene with a heat transfer medium maintained at a temperature of from about 150.degree. C. to about 350.degree. C. for a period sufficient to form the desired product.

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