Process for producing flexible polyurethane foam

Details Process for producing flexible polyurethane foam Process for producing flexible polyurethane foam

1989-06-22

1992-03-03

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521158, 521906, C08G 1854, C08G 1832

Patent

active

050933787

ABSTRACT:
An improved process for producing a flexible polyurethane foam having improved flame retardance and physical properties by reacting a polyhydroxy compound and a polyisocyanate compound in the presence of a blowing agent, wherein the improvement comprises using as the polyhydroxy compound one in which an aldehyde condensation polymer has been formed by polycondensation and dispersed such that it accounts for preferably from 5 to 30 wt % of the total amount of the polyhydroxy compound, and adding as the flame retardant a melamine powder preferably in an amount of from 5 to 100 parts by weight for 100 parts by weight of said polyhydroxy compound.

REFERENCES:
patent: 4225481 (1980-09-01), Wagner
patent: 4258141 (1981-03-01), Jarre et al.
patent: 4275169 (1981-06-01), Rudner et al.
patent: 4282135 (1981-08-01), Wagner
patent: 4367294 (1983-01-01), Hahn et al.
patent: 4383100 (1983-05-01), Pechhold
patent: 4394306 (1983-07-01), Ravey
patent: 4654377 (1987-03-01), Mohring
patent: 4722946 (1988-02-01), Hostettler
Woods; The ICI Polyurethanes Book; 1987, pp. 7-15.
Kirk-Othmer; Concise Encyclopedia of Chemical Technology; pp. 1211-1212.

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