Integral-skin polyurethane foams and process therefor

Details Integral-skin polyurethane foams and process therefor Integral-skin polyurethane foams and process therefor

1980-03-31

1981-12-15

Cockeram, H. S.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

521 51, 521167, 521128, 521129, 521 99, 521121, 521125, 264DIG14, 4284233, C08G 1814, C08G 1816, C08G 1830, B32B 514

Patent

active

043059910

ABSTRACT:
The instant invention relates to a process for the production of polyurethane foams by reacting polyisocyanates with polyhydroxyl compounds of a specified molecular weight range in the presence of blowing agents and chain lengthening or cross-linking agents and optionally in the presence of catalysts, foam stabilizers and other additives generally known. The improvement resides in

REFERENCES:
patent: 3264231 (1966-08-01), Ibbotson
patent: 3523918 (1970-08-01), Gonzalez
patent: 4107102 (1978-08-01), Dahm et al.
patent: 4150206 (1979-04-01), Jourquim et al.
patent: 4189542 (1980-02-01), Kleimann et al.

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