Method of making polyurethane foam

Details Method of making polyurethane foam Method of making polyurethane foam

1984-04-11

1985-05-14

Cockeram, Herbert S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

2643281, 528 49, 4283084, 4283105, 521129, 521130, 521904, C08G 1814, C08G 1818, C08G 1820

Patent

active

045173133

ABSTRACT:
A method of manufacturing polyurethane foam by a reaction of organic polyisocyanates and polyols in the presence of a foaming agent and catalysts comprises using as the catalyst, a salt of carbonic acid and polyamine represented by the general formula: ##STR1## wherein R.sub.1 and R.sub.2 are an alkyl group having 1-4 carbon atoms or R.sub.1 and R.sub.2 are combined to form a heterocyclic ring having 3-6 carbon atoms together with a nitrogen atom; and R.sub.3 is an alkylene group.

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Buist et al., Developments in Polyurethanes-1, Applied Science Publ., London (1978).

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