Process for preparing high molecular weight polyether resins fro

Details Process for preparing high molecular weight polyether resins fro Process for preparing high molecular weight polyether resins fro

1977-07-27

1978-08-01

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

C08G 5962, C08G 5900

Patent

active

041042573

ABSTRACT:
A process for preparing thermoplastic polyether resins from bisphenols, particularly having significant quantities of the o, p- or o, o-isomers such as bisphenol A and epoxy resins such as the diglycidyl ether of bisphenol A is improved by the addition of small quantities of a halogenated bisphenol such as tetrabromobisphenol A preferably near the end of the reaction. The process provides a product higher in molecular weight than that obtained without the use of the halogenated bisphenol.

REFERENCES:
patent: 3277048 (1966-10-01), Sonnabend
patent: 3306872 (1967-02-01), Maycock et al.
patent: 3336257 (1967-08-01), Alvey et al.
patent: 3379684 (1968-04-01), Wiesner et al.
patent: 3477990 (1969-11-01), Dante et al.
patent: 3637590 (1972-01-01), Maycock et al.

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