Phenolic thermosetting resins containing polyols

Details Phenolic thermosetting resins containing polyols Phenolic thermosetting resins containing polyols

1998-03-02

1999-11-02

Yoon, Tae

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

Synthetic resins

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

524904, 524593, 525934, 528159, 528501, 528161, C08G 0828, C08G 6391

Patent

active

059772530

ABSTRACT:
Disclosed is a resol phenolic thermosetting resin made by preparing a composition of formaldehyde and a phenol in a molar ratio of about 1:1 to about 3:1, about 1 to about 20 wt %, based on the weight of said composition, of a phenol-formaldehyde polymerization catalyst, and about 0.5 to about 10 wt %, based on the weight of said phenol, of a polyvinyl alcoholic compound. The phenol can be benzophenol, an alkyl from C.sub.1 to C.sub.12 phenol, a bisphenol, or a mixture thereof. The bisphenol can be bisphenol A, bisphenol F, or bisphenol S. The polyvinyl alcoholic compound can be polyvinyl alcohol, polyvinyl acetate, an acetal derived from polyvinyl alcohol, or a mixture thereof. The composition is heated at about 50 to about 120.degree. C. to form the resin.

REFERENCES:
patent: 3607598 (1971-09-01), LeBlanc et al.
patent: 4131582 (1978-12-01), Kako et al.
patent: 4157324 (1979-06-01), Culbertson
patent: 4748214 (1988-05-01), Asami et al.
patent: 5548015 (1996-08-01), Bourlier et al.
patent: 5552186 (1996-09-01), Bourlier et al.

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