Process for making cellular polyvinyl chloride products and prod

Details Process for making cellular polyvinyl chloride products and prod Process for making cellular polyvinyl chloride products and prod

1978-03-08

1980-12-23

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264DIG5, 521 94, 521 95, 521 96, 521909, C08J 910

Patent

active

042411920

ABSTRACT:
Cellular polyvinyl chloride products of good cell quality are made utilizing a lower fusion temperature than conventionally employed by incorporating in a polyvinyl chloride containing plastisol, which has a fusion temperature of from about 220.degree. F. to about 300.degree. F., an effective amount of a blowing agent selected from the group consisting of (1) a mixture of benzene sulfonyl hydrazide and 4,4'-oxybis (benzene sulfonyl hydrazide), (2) a mixture of toluene sulfonyl hydrazide and 4,4'-oxybis (benzene sulfonyl hydrazide), and (3) 4,4'-oxybis (benzene sulfonyl hydrazide) alone, and an organic base or oxidizing agent which acts as an activator for said blowing agent.

REFERENCES:
patent: 3819783 (1974-06-01), Jones
patent: 3983294 (1976-09-01), Goswami
patent: 4031045 (1977-06-01), Goswami
patent: 4097663 (1978-06-01), Gallagher et al.

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