Method for producing polyurethane resins

Details Method for producing polyurethane resins Method for producing polyurethane resins

1984-11-16

1986-06-17

Cockeram, Herbert S.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 73, 528 745, 528 75, 427340, C08G 1818, C08G 1877

Patent

active

045957410

ABSTRACT:
Polyurethane resin curable at low temperature and in a short time is prepared by contacting a compound having 1-oxa-3,5-diazine-2,4,6-trione ring as well as isocyanate groups, e.g. a reaction product of an aliphatic, alicyclic or aralkyl polyisocyanate, e.g. hexamethylene diisocyanate and carbon dioxide and a compound having active hydrogen, e.g. polyester polyol, with tert-amine, e.g. trimethylamine present in gaseous phase, at a temperature of 0.degree.-100.degree. C. The ratio of the sum of the numbers of the trione ring and the isocyanate group to the number of the active hydrogen in the compound having the same is 0.1 to 10.

REFERENCES:
patent: 3874898 (1975-04-01), McInnes et al.
patent: 4408034 (1983-10-01), Kazama et al.
patent: 4443590 (1984-04-01), Kamatani et al.
patent: 4443597 (1984-04-01), Kamatani et al.
patent: 4456744 (1984-06-01), Kamatani et al.

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