Low density cellular polyvinyl chloride

Details Low density cellular polyvinyl chloride Low density cellular polyvinyl chloride

1983-06-27

1984-06-12

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 73, 521139, 521140, 521145, 525193, C08J 906

Patent

active

044542500

ABSTRACT:
A blend is provided which is suitable for preparing low density cellular products of the closed cell type, said blend comprising a vinyl chloride resin, e.g., polyvinyl chloride; a butadiene rubber, e.g., butadiene-acrylonitrile; and a liquid polyfunctional or monofunctional monomer, e.g., styrene. Insulation products such as sheets or tubes (for pipe insulation) are easily fabricated by freely expanding (i.e., without employing forming molds) blends of the invention which contain heat-activatable blowing agents.

REFERENCES:
patent: 2757147 (1956-07-01), Pooley
patent: 2901774 (1959-09-01), Pooley
patent: 3066110 (1962-11-01), Cornell
patent: 3211677 (1965-10-01), Field et al.
patent: 3983295 (1976-09-01), Murer et al.
patent: 3993607 (1976-11-01), Florence
patent: 4203815 (1980-05-01), Noda et al.
patent: 4245055 (1981-01-01), Smith

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