Medium density chlorinated polyvinyl chloride foam and process f

Details Medium density chlorinated polyvinyl chloride foam and process f Medium density chlorinated polyvinyl chloride foam and process f

1997-04-10

1998-08-04

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 99, 521 81, 521 93, 521 94, 521134, 521139, 521140, 521145, C08J 908

Patent

active

057894531

ABSTRACT:
The present invention relates to a medium density chlorinated polyvinyl chloride foam and the method of preparing such a foam using a blend of chemical blowing agents. The foam having a specific gravity in the range of about 0.3 to about 1.5 comprises chlorinated polyvinyl chloride, a blend of decomposition type blowing agents, a tin stabilizer, a optional impact modifier and a optional high molecular weight process aid.

REFERENCES:
patent: 4360602 (1982-11-01), Nehmey et al.
patent: 4370286 (1983-01-01), Nehmey et al.
patent: 4383048 (1983-05-01), Hall et al.
patent: 4413065 (1983-11-01), Hall et al.
patent: 4980383 (1990-12-01), Shimazu et al.

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