Phenol-formaldehyde resins modified with guanidine salts

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate

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Details

524594, 524596, 525504, 156335, 428528, C08G 804, C08L 6110, C09J16110, B32B 2108

Patent

active

057635595

ABSTRACT:
A guanidine-modified phenol-formaldehyde resole resin by reacting formaldehyde and phenol at a formaldehyde to phenol mole ratio above about 1.5:1 in the presence of an effective amount of an alkaline catalyst and in the presence of a catalytic amount of a guanidine salt. The resin is suitable for use in adhesives for high moisture content substrates.

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