Process for production of phenolic resin from bisphenol-A by-pro

Details Process for production of phenolic resin from bisphenol-A by-pro Process for production of phenolic resin from bisphenol-A by-pro

1981-02-10

1982-06-29

Schain, Howard E.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528129, 528143, 528144, 528153, 528154, 528155, C08G 820, C08G 824

Patent

active

043373348

ABSTRACT:
A process for producing a phenolic resin comprising condensing a phenol component and an aldehyde component, characterized in that the phenol component comprises (high-molecular-weight phenolic compounds which are left after bisphenol A-containing by-products formed in the production of bisphenol A by condensing acetone and phenol in the presence of an acid catalyst are treated at a high temperature of at least 150.degree. C. in the presence of an alkaline catalyst to remove low-boiling components therefrom.

REFERENCES:
patent: 3862089 (1975-01-01), Shinohara et al.
patent: 4018739 (1977-04-01), Okamoto et al.
patent: 4179429 (1979-12-01), Hanauye et al.

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