Process for the preparation of polyurethane foams

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

1989-10-02

1992-04-14

Kight, III, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521128, 528 72, C08G 1814, C08G 1816

Patent

active

051049058

ABSTRACT:
The present invention relates to a process for the preparation of polyurethane foams comprising reacting polyisocyanates with compounds having a molecular weight of from 400 to 10,000 and containing at least two isocyanate-reactive hydrogen atoms, in the presence of water and/or organic blowing agents, catalysts, melamine having a particle size of from about 5 to about 90 micrometers as a flameproofing agent. The process is optionally carried out in the presence of other flameproofing agents, compounds containing at least two isocyanate-reactive hydrogen atoms and having a molecular weight of from 32 to 399, and known surface-active additives and auxiliaries.

REFERENCES:
patent: 4221875 (1980-09-01), Yukuta et al.
patent: 4258141 (1981-03-01), Jarre et al.
patent: 4293657 (1981-10-01), Nissen et al.
patent: 4312959 (1982-01-01), Treadwell et al.
patent: 4529742 (1985-07-01), Von Bonin et al.
patent: 4542170 (1985-09-01), Hall et al.
patent: 4644015 (1987-02-01), Scaccia et al.
patent: 4757093 (1988-07-01), Ricciardi et al.
patent: 4859713 (1989-08-01), Blount
patent: 4892893 (1990-01-01), Grace et al.

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