Retarders for hardening phenolic resins

Details Retarders for hardening phenolic resins Retarders for hardening phenolic resins

1991-05-13

1993-01-19

Kight, III, John

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525503, 525505, 525508, 523139, 523145, 523146, 528129, C08F28300, C08G 828, B22C 100

Patent

active

051807955

ABSTRACT:
There is disclosed methods and compositions for retarding the room temperature hardening of phenolic resole resins when such resins are mixed with lightburned magnesium oxide with or without an ester functional hardening agent. Compounds which act as retarders include azelaic acid, salicylamide, sulfanilic acid, N-methylaniline, and 2,6-diethylaniline.

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