Compositions – Compositions containing a single chemical reactant or plural... – Organic reactant
Patent
1998-01-14
1999-02-23
Foelak, Morton
Compositions
Compositions containing a single chemical reactant or plural...
Organic reactant
25218226, 25218227, 25218228, 521128, 521164, 521167, 521173, 521177, C08K 300
Patent
active
058740210
ABSTRACT:
It is to provide a method for producing a low-fuming rigid polyurethane foam, which is superior in initial activity at low temperature and requires a small amount of a stock liquid.
A method for producing a rigid polyurethane foam, which comprises mixing (a) a polyisocyanate component with a polyol component comprising (b) a polyol mixture, (c) a catalyst and (d) a blowing agent, then foaming the mixture;
wherein the polyisocyanate component (a) is polymethylenepolyphenyl polyisocyanate or a modified material thereof, the polyol mixture (b) comprises (b-1) an aromatic polyester polyol and (b-2) an aromatic polyether polyol; the catalyst (c) is at least one metallic catalyst; and the blowing agent (d) is an adduct of a primary or secondary amine compound with carbon dioxide.
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patent: 5026737 (1991-06-01), Ohnuma et al.
patent: 5648019 (1997-07-01), White, III et al.
patent: 5677359 (1997-10-01), White, III et al.
patent: 5684057 (1997-11-01), White, III et al.
Inazawa Yasuo
Odani Kei
Brown N. Denise
Foelak Morton
Gil Joseph C.
Sumitomo Bayer Urethane Ltd.
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