Foamability of phenolic resins

Details Foamability of phenolic resins Foamability of phenolic resins

1988-08-25

1991-10-15

Kight, III, John

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528147, 528148, 528219, 528254, 528493, 428528, 428529, 524 21, 524482, 156291, 156295, 156323, 156335, 156328, C08G 804, C08G 1402, C08G 6538

Patent

active

050575910

ABSTRACT:
The invention is a solution of highly advanced phenolic resin with improved inherent foamability that is made from the reaction of phenol, aldehyde, water and alkali the improved foamability being brought about by the incorporation of up to 1.0% by weight, anhydrous basis, lime (calcium hydroxide) into the early stages of the reaction mix. In another embodiment, the invention is a plywood glue composition comprising a solution of lime-containing highly advanced phenolic resin, dried animal blood and preferably an aldehyde glue viscosity-lowering agent.

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patent: 4207401 (1980-06-01), Dahms
patent: 4216295 (1980-08-01), Dahms

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