Modified polyisocyanurate foam and method of preparation

Details Modified polyisocyanurate foam and method of preparation Modified polyisocyanurate foam and method of preparation

1982-07-14

1984-01-17

Cockeram, H. S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521117, 521121, 521125, 521130, 521131, 521166, 521902, 521903, C08G 1814, C08G 1818, C08G 1822, C08G 1830

Patent

active

044264615

ABSTRACT:
An isocyanurate thermosetting foam composition having improved flame, smoke and nonburning properties with high char resistance, which foam composition is prepared by the reaction of from about 5 to 40 parts of a methoxy polyethylene glycol and optionally with melamine, with 100 parts of a methylene diisocyanate having an average functionality of about 2.4 or less in the presence of a blowing agent, a surfactant and a single trimerization catalyst, to provide a closed-cell, thermosetting, modified polyisocyanurate foam having a flame-spread value of about 15 or less.

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patent: 4221875 (1980-09-01), Yukuta et al.
patent: 4349638 (1982-09-01), Narayan
patent: 4362823 (1982-12-01), Wernsing

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