PVC foamed compositions

Details PVC foamed compositions PVC foamed compositions

1997-03-19

1998-03-10

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 97, 521145, C08J 900

Patent

active

057262136

ABSTRACT:
The density of rigid foamed articles made by the thermal decomposition of a blowing agent in a vinyl chloride polymer is reduced by the use of an organotin mercaptoalkylcarboxylate, alone, or in combination with an organotin halide or carboxylate which activate the blowing agent. Sulfides made from said organotin mercaptoalkylcarboxylate are also superior activators of the blowing agent.

REFERENCES:
patent: 3706679 (1972-12-01), Hopton et al.
patent: 3953385 (1976-04-01), Dworkin et al.
patent: 4032468 (1977-06-01), Treadwell et al.
patent: 4698368 (1987-10-01), Miller
patent: 4977193 (1990-12-01), Croce et al.

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