Process for preparing low smoke-generating rigid polyurethane fo

Details Process for preparing low smoke-generating rigid polyurethane fo Process for preparing low smoke-generating rigid polyurethane fo

1974-04-26

1976-05-11

Ivy, C. Warren

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25AD, 260 25AM, 260 25AJ, C08G 1814, C08K 515

Patent

active

039562026

ABSTRACT:
A process for preparing rigid polyurethane foam in which the major ingredients are a polyisocyanate, a polyol having more than three hydroxy groups and a hydroxyl value greater than 100, and blowing agents, comprising adjusting the ratio of the chemical equivalent of polyisocyanate to the polyol and blowing agent which react with the polyisocyanate to the range between 2 : 1 and 1 : 1, and adding a polymer of glucose and/or a derivative thereof in the form of a powder in the amount exceeding 5% by weight.

REFERENCES:
patent: 2999823 (1961-09-01), Dombrow
patent: 3004934 (1961-10-01), Dosmann
patent: 3674717 (1972-07-01), Fuzesi
patent: 3714047 (1973-01-01), Marion
patent: 3836487 (1974-09-01), Carter

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