Curing of phenol-formaldehyde resins

Details Curing of phenol-formaldehyde resins Curing of phenol-formaldehyde resins

1978-05-30

1980-04-29

Briggs, Sr., Wilbert J.

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

Synthetic resins

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

525505, 525506, 525508, C08L 6110

Patent

active

042007062

ABSTRACT:
Phenol-formaldehyde resoles and novalacs are cured at temperatures of from about 0.degree. C. to about 150.degree. C. and at pressures ranging from about atmospheric pressure to about 5 atmospheres to produce highly cross-linked resins when divinylbenzene is used as a cross-linking agent together with a minor amount of an acidic catalyst.

REFERENCES:
patent: 2809181 (1957-10-01), Turner et al.
patent: 3083118 (1963-03-01), Bridgeford

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