Production of closed-celled foams of high compressive strength

Details Production of closed-celled foams of high compressive strength Production of closed-celled foams of high compressive strength

1988-07-08

1989-06-20

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 50, 264 51, 264 53, 264DIG5, 521 97, 521 98, 521146, 521910, C08J 908, C08J 914

Patent

active

048409766

ABSTRACT:
Closed-celled foams of high compressive strength are obtained by extruding a mixture of a styrene polymer and from 8 to 16% by weight of a blowing agent mixture containing from 2 to 20% by weight of ethyl chloride, from 2 to 20% by weight of carbon dioxide, from 20 to 80% by weight of dichlorodifluoromethane and from 10 to 60% by weight of monochlorodifluoromethane.

REFERENCES:
patent: 3960792 (1976-06-01), Nakamura
patent: 4303758 (1981-12-01), Gusmer
patent: 4370286 (1983-01-01), Nehmey et al.
patent: 4393017 (1983-07-01), Kim et al.
patent: 4396563 (1983-08-01), Gusmer
patent: 4636527 (1987-01-01), Suh et al.

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