Phenol formaldehyde resin for hardboard applications

Details Phenol formaldehyde resin for hardboard applications Phenol formaldehyde resin for hardboard applications

1979-06-27

1981-05-26

Schain, Howard E.

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

Synthetic resins

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

260 14, 260 172, 260 293, 428526, 428529, 525405, 528140, 528142, 528144, 528147, 528165, C08G 810

Patent

active

042699495

ABSTRACT:
A finished resin comprising a highly condensed phenol formaldehyde resole resin which has green groups formed by a low condensation phenol formaldehyde resin, the finished resin being modified by addition of a weak acid and a non-cellulosic protective colloid to improve reactivity and flow properties thereof.

REFERENCES:
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patent: 2631098 (1953-03-01), Redfern
patent: 2748101 (1956-05-01), Shappell
patent: 2988536 (1961-06-01), Hine et al.
patent: 3657188 (1972-04-01), Perkins
patent: 3657383 (1972-04-01), Silver
patent: 3839251 (1974-10-01), Bornstein
patent: 4098770 (1978-07-01), Berchem et al.
patent: 4140845 (1979-02-01), Vasishth
patent: 4176106 (1979-11-01), Reid et al.

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