Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1979-11-14
1981-09-15
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521107, 521113, 521117, 521121, 521124, 521127, 521128, 521129, 521167, 521172, 521173, 521174, 521176, C08G 1814
Patent
active
042898560
ABSTRACT:
A process for preparing an integral-skinned polyurethane foam wherein a foamable composition for formation of polyurethane which comprises a polyol, polyisocyanate, cross-linking agent, catalyst, and blowing agent is reacted and expanded in a mold, characterized in that
REFERENCES:
patent: 4021385 (1977-05-01), Austin et al.
patent: 4065410 (1977-12-01), Schafer et al.
patent: 4107102 (1978-08-01), Dahm et al.
patent: 4150206 (1979-04-01), Jourquin et al.
Azuma Ichiro
Yamamoto Masaki
The Toyo Rubber Industry Co. Ltd.
Welsh Maurice J.
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