Method of producing a naphthol-modified phenolic resin of highly

Details Method of producing a naphthol-modified phenolic resin of highly Method of producing a naphthol-modified phenolic resin of highly

1992-05-07

1993-04-27

Kight, III, John

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528129, 528137, 528140, 528143, 528144, 528153, 528155, 528163, C08G 804, C08G 1440

Patent

active

052063330

ABSTRACT:
A copolycondensation of a phenol, a naphthol and formaldehyde proceeds smoothly in the presence of an acid and a metallic element selected from the group consisting of transition metallic elements and metallic elements of Group IIa, Group IIIa, Group IVa, Group Va and Group VIa of the Periodic Table, and a naphthol-modified phenolic resin which has a large molecular weight and does not gel is obtained.

REFERENCES:
patent: 4404357 (1983-10-01), Taylor et al.
patent: 4424315 (1984-01-01), Taylor et al.
patent: 4551409 (1985-11-01), Gulla et al.
patent: 4725523 (1988-02-01), Miura et al.
patent: 5023311 (1991-06-01), Kubota

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