Crosslinked chlorinated polyethylene foam

Details Crosslinked chlorinated polyethylene foam Crosslinked chlorinated polyethylene foam

1979-01-04

1980-06-24

Foelak, Morton

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, 521143, 521915, H05B 100, C08J 910

Patent

active

042094739

ABSTRACT:
A crosslinked, soft, flexible, closed-cell foam of suspension chlorinated high density polyethylene and a process for the preparation thereof, comprising admixing a high density suspension 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.

REFERENCES:
patent: 2952594 (1960-09-01), Rubens
patent: 3098832 (1963-07-01), Dooley et al.
patent: 3627658 (1971-12-01), Ryttel
patent: 3651183 (1972-03-01), Hosoda et al.
patent: 3706683 (1972-12-01), Vogt et al.
patent: 3812225 (1974-05-01), Hosoda et al.
patent: 3817851 (1974-06-01), Atchison et al.
patent: 3819543 (1974-06-01), Stastny et al.
patent: 3852177 (1974-12-01), Atchison et al.
patent: 4011379 (1977-03-01), Bow et al.
patent: 4146598 (1979-03-01), Coyne

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