PVC foam compositions

Details PVC foam compositions PVC foam compositions

1997-09-24

1998-07-21

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 79, 521 81, 521 93, 521134, 521145, 524156, 524184, 524186, 524261, 524301, 524329, C08J 900

Patent

active

057836132

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 halide in combination with a mercaptocarboxylic acid ester or a sulfide of such ester or a mixture of the ester and the sulfide to activate 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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