Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1990-03-23
1992-02-18
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521107, 521108, 521119, 521131, 521132, 521154, 528 72, 528108, 528287, 528169, C08G 1814, C08G 1816, C08J 914
Patent
active
050895346
ABSTRACT:
This invention relates to the use of phosphorus-containing compounds, specifically cyclic organophosphorus compounds, as carbodiimidization catalysts in the preparation of open-celled flexible polyurethane foam for the purpose of controlling foam density and providing softer foams. foams that are softer and of lower density can be prepared with significantly reduced quantities of blowing agents in comparison to foams prepared in the absence of such phosphorus-containing compounds. Additionally, use of such catalysts provides for a reduced reaction exotherm during the preparation of the foam thereby minimizing foam discoloration or scorching. Preferred phosphorus-containing compounds are the 1-alkyl-1-oxophospholenes, especially 1-methyl-1-oxophospholene.
REFERENCES:
patent: 4021381 (1977-05-01), Christensen
patent: 4085140 (1978-04-01), Ibbotson
patent: 4088665 (1978-05-01), Findelsen et al.
patent: 4154752 (1979-05-01), Sundermann et al.
patent: 4210452 (1980-07-01), Nicholson et al.
patent: 4234694 (1980-11-01), La Spina et al.
patent: 4244288 (1981-01-01), Harasina
patent: 4273881 (1981-06-01), Otten
patent: 4298709 (1981-11-01), Ginter et al.
patent: 4334944 (1982-06-01), Creye
patent: 4743624 (1988-05-01), Blount
patent: 4859713 (1989-08-01), Blount
Muller Ulrich
Sewell Robert A.
Thoen Johan A.
Kight III John
The Dow Chemical Company
Truong Duc
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