Process for preparing flame retarding polyurethane foams

Details Process for preparing flame retarding polyurethane foams Process for preparing flame retarding polyurethane foams

1976-04-30

1978-02-21

Ivy, C. Warren

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C08G 1814, C08G 1878

Patent

active

040751376

ABSTRACT:
Process for preparing flame retarding polyurethane foams from a polyhydroxyl compound, diisocyanate mixture, a blowing agent, a catalyst and any other auxiliary agent if necessary, comprising mixing polyhydroxyl compound having at least two active hydrogen atoms per molecule, a molecular weight of 1,000 to 10,000 and wherein at least 10% by weight of the hydroxyl groups are primary hydroxyl groups, and a diisocyanate mixture containing 10 to 60% by weight of a modified diisocyanate prepared from the reaction of a diisocyanate compound expressed by the formula ##STR1## wherein X is an oxygen or sulfur atom.

REFERENCES:
patent: 3367956 (1968-02-01), Hennig
patent: 3943158 (1976-03-01), Dietrich
patent: 3970618 (1976-07-01), Jabs

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