Method for reducing 2-functional components in novolac resins an

Details Method for reducing 2-functional components in novolac resins an Method for reducing 2-functional components in novolac resins an

1986-01-13

1987-03-10

Jacobs, Lewis T.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528142, 528144, C08G 804

Patent

active

046491880

ABSTRACT:
The 2-functional content of phenol-aldehyde novolac resins is reduced by water extraction. Epoxy novolac resins prepared from the novolac resin containing less 2-functional product exhibit increased Tg values when cured.

REFERENCES:
patent: 2520913 (1950-09-01), Clark
patent: 3658758 (1972-04-01), Eglin et al.
patent: 4259464 (1981-03-01), Buriks et al.
Brydson; Plastics Materials; Newnes-Butterworths; 1975; pp. 514, 515.

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