Foamed chlorinated polyvinyl chloride and compositions for makin

Details Foamed chlorinated polyvinyl chloride and compositions for makin Foamed chlorinated polyvinyl chloride and compositions for makin

1981-09-14

1982-11-23

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 53, 264211, 264DIG5, 264DIG13, 521 79, 521139, 521145, 521909, 521910, 521 81, C08J 910

Patent

active

043606024

ABSTRACT:
Composition of matter that can be foamed to form an expanded product having density of less than 20 lbs/ft.sup.3 and containing a preponderance of the cells in the size range of less than 500 microns comprising a mixture of chlorinated polyvinyl chloride, 5 to 50 parts by weight of the chlorofluoroalkane of 1 to 2 carbon atoms as a primary blowing agent and 0.01 to 2 parts by weight of azodicarbonamide that is dispersed through the resin and forms cell nuclei from which expanded cells are created, all based on 100 parts by weight of the resin.

REFERENCES:
patent: 3267051 (1966-08-01), Landler et al.
patent: 3366580 (1968-01-01), Kraemer, Jr.
patent: 3975315 (1976-08-01), Parks
patent: 4046846 (1977-09-01), Fujimori
patent: 4048272 (1977-09-01), Spicuzza, Jr.
patent: 4165415 (1979-08-01), Adachi et al.

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