Foam manufacture

Details Foam manufacture Foam manufacture

1982-07-07

1983-11-22

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521129, 521130, 521157, C08G 1814

Patent

active

044170025

ABSTRACT:
A carboxylic acid or carboxylate is reacted with an isocyanate to produce gas which is used to give a blowing action in the manufacture of a foam plastics material, especially foam polyurethane.
Preferably formic acid or a formate is used.

REFERENCES:
patent: 2932621 (1960-04-01), Terry
patent: 3087900 (1963-04-01), Brown
patent: 3567663 (1971-03-01), Triolo et al.
patent: 3663465 (1972-05-01), Fogiel

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