Process for the preparation of polyurethane foams

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

1978-04-13

1980-02-05

Hoke, Veronica P.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521177, C08G 1814

Patent

active

041873572

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.

REFERENCES:
patent: 3072582 (1963-01-01), Frost
patent: 3075928 (1963-01-01), Lanham
patent: 3405077 (1968-10-01), Pastor
patent: 3461086 (1969-08-01), Mogford
patent: 3535307 (1970-10-01), Moss
patent: 3639541 (1972-02-01), Austin
patent: 3639542 (1972-02-01), Pizzini
patent: 3692707 (1972-09-01), Pruitt
patent: 3746664 (1973-07-01), Doerge
patent: 3758646 (1973-09-01), Boyer
patent: 3821130 (1974-06-01), Barron
patent: 4048100 (1977-09-01), Gurgiolo
patent: 4052345 (1977-10-01), Austin

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