Process for making cyanato containing phenolic resins

Details Process for making cyanato containing phenolic resins Process for making cyanato containing phenolic resins

1989-09-01

1992-08-11

Anderson, Harold D.

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

Synthetic resins

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

525390, 525480, C08G 6548

Patent

active

051379899

ABSTRACT:
The present invention is directed to a process of preparing a cyanato group containing phenolic resin by reacting the corresponding phenolic resin with a tertiary amine in a water immiscible, non-hydrogen bonding solvent at a temperature of preferably less than about 25.degree. C. to form the corresponding ammonium salt of the phenolic resin; and reacting the ammonium salt with a cyanogen halide at a temperature equal to or less than about 0.degree. C. in said solvent to form the cyanato containing phenolic resin.

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