Cellular elastomeric foams and method of production using an exp

Details Cellular elastomeric foams and method of production using an exp Cellular elastomeric foams and method of production using an exp

1980-06-27

1981-10-27

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521110, 521128, 521130, 521131, 521159, C08G 1814

Patent

active

042974429

ABSTRACT:
Polyurethane elastomeric foam by foaming a prepolymer or polyisocyanates and compounds having at least two hydrogen atoms reactive to isocyanates, and a chain-lengthening polyamine agent, in the presence of an expanding agent containing a component reactive with the polyamine chain-lengthening agent or with the products of reaction thereof with polyisocyanates, and split-off gas.

REFERENCES:
patent: 3222302 (1965-12-01), Bollert et al.
patent: 3573232 (1971-03-01), Kloker et al.
patent: 3975316 (1976-08-01), Villa
patent: 3991023 (1976-11-01), Blahak et al.
patent: 4070310 (1978-01-01), Schneider et al.

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