Process for the preparation of polyurethane foams

Details Process for the preparation of polyurethane foams Process for the preparation of polyurethane foams

1975-06-25

1977-10-04

Rzucidlo, Eugene C.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25AJ, 260 25AR, 260 25AT, C08G 1814

Patent

active

040523454

ABSTRACT:
An oxyalkylated product useful for making polyurethane foams is prepared by reacting an alkylene oxide with a heated mixture of a phenol and a non-phenolic active hydrogen compound, at least one of which can be halogenated, in the presence of a catalyst complex of a phenol and an iron or aluminum substance. The mixture can also include a neutral phosphorus compound and/or acid anhydrides to enhance flame retardant properties. Optionally, also, the oxyalkylation reaction can be terminated by adding a tri (lower alkyl) amine and alkylene oxide to react with residual phenolic hydrogen in the mixture.

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patent: 3075928 (1963-01-01), Lanham
patent: 3405077 (1968-10-01), Pastor et al.
patent: 3461086 (1969-08-01), Mogford et al.
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patent: 3639541 (1972-02-01), Austin et al.
patent: 3639542 (1972-02-01), Pizzini et al.
patent: 3692707 (1972-09-01), Pruit et al.
patent: 3746664 (1973-07-01), Doerge et al.
patent: 3758646 (1973-09-01), Boyer
patent: 3821130 (1974-06-01), Barron et al.

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