Process for the preparation of polyurethane foams

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

1991-06-21

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, 521163, 524710, C08G 1814

Patent

active

051049066

ABSTRACT:
The present invention relates to a process for the preparation of polyurethane foams in which polyisocyanates are reacted 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 as a flameproofing agent, and other flameproofing agents selected from phosphonic acid esters having the general formula ##STR1## wherein R.sup.1 is C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 unsaturated alkyl, C.sub.5 -C.sub.12 cycloalkyl, C.sub.7 14 C.sub.15 aralkyl, or C.sub.6 -C.sub.12 aryl, R.sup.2 and R.sup.3 are independently C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 unsaturated alkyl, C.sub.5 -C.sub.12 cycloalkyl, C.sub.7 -C.sub.15 aralkyl, or C.sub.6 -C.sub.12 aryl, or R.sup.2 and R.sup.3 together are C.sub.2 -C.sub.4 alkylene, R.sup.4 is C.sub.1 -C.sub.6 alkylene, C.sub.5 -C.sub.12 cycloalkylene, C.sub.7 -C.sub.15 aralkylene, or C.sub.6 -C.sub.12 arylene, R.sup.5 is C.sub.2 -C.sub.6 alkylene, C.sub.5 -C.sub.12 cycloalkylene, C.sub.7 -C.sub.15 aralkylene, or C.sub.6 -C.sub.12 arylene, and n is an integer of from 1 to about 100.
The process is optionally carried out in the presence of 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: 3664975 (1972-05-01), Kerst
patent: 4010124 (1977-03-01), Hofmann et al.
patent: 4221875 (1980-09-01), Yukuta et al.
patent: 4258141 (1981-03-01), Jarre et al.
patent: 4268633 (1981-05-01), Fearing
patent: 4312959 (1982-01-01), Treadwell et al.
patent: 4529742 (1985-07-01), von Bonin et al.
patent: 4747093 (1988-07-01), Ricciardi et al.
patent: 4849459 (1989-07-01), Grace et al.
patent: 4859713 (1989-08-01), Blount et al.
patent: 4892893 (1990-01-01), Grace et al.

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