Process of producing urethane-modified polyisocyanurate foams

Details Process of producing urethane-modified polyisocyanurate foams Process of producing urethane-modified polyisocyanurate foams

Filed on

1982-01-05

Date issued

1983-07-12

Examiner

Cockeram, H. S.

Patent Class

Plastic and nonmetallic article shaping or treating: processes

SubClass

Pore forming in situ

SubSubClass

By gas forming or expanding

Other Related Categories

264 453, 521110, 521115, 521116, 521125, 521129, 521131, 521160, 521175, 521902, 521914, C08G 1814, C08G 1848, C08G 1818, C08G 1822

Type

Patent

Status

active

Patent number

043930158

Description

ABSTRACT:
A process for producing urethane-modified polyisocyanurate foams in which a poly(oxyalkylene-oxyethylene)polyether polyol is used as a modifying agent having the number of functional groups and the molecular weight in specific ranges with the equivalent ratio of NCO/OH being in a specific range and containing a specific quantity of ethylene oxide. The use of this modifying agent provides urethane-modified polyisocyanurate foams exhibiting excellent fire resistance and adhesion to an object surface.

REFERENCES:
patent: 4009130 (1977-02-01), Zimmerman et al.
patent: 4189541 (1980-02-01), Ohashi et al.
patent: 4190711 (1980-02-01), Zdrahala et al.
patent: 4243760 (1981-01-01), McDaniel et al.
patent: 4254069 (1981-03-01), Dominquez et al.
patent: 4256846 (1981-03-01), Ohashi et al.
patent: 4273884 (1981-06-01), Dominquez
patent: 4273885 (1981-06-01), Dominquez et al.

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