Process for preparing suspension chlorinated crosslinked polyeth

Details Process for preparing suspension chlorinated crosslinked polyeth Process for preparing suspension chlorinated crosslinked polyeth

1976-08-09

1979-03-27

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

2041592, 264 51, 264 54, 264 85, 264175, 264176R, 264319, 521 90, 521 95, 521143, 521915, H05B 100, C08F 4710

Patent

active

041465989

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 crosslinking 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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patent: 3819543 (1974-06-01), Stastny et al.
patent: 3852177 (1974-12-01), Atchison et al.
patent: 4011379 (1977-03-01), Bow et al.

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