Non-crosslinked polyether-ketones which can be processed by a th

Details Non-crosslinked polyether-ketones which can be processed by a th Non-crosslinked polyether-ketones which can be processed by a th

1985-04-25

1987-02-24

Phynes, Lucille M.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528126, 528128, 528190, 528191, C08G 802, C08G 1400

Patent

active

046458190

ABSTRACT:
Polyether-ketones containing the structural unit ##STR1## have a completely linear structure, and are heat-stable and free from crosslinking reactions during processing at from 390.degree. to 420.degree. C.
They are prepared by Friedel-Crafts acylation of terephthaloyl chloride or terephthaloyl fluoride with diphenyl ether in hydrogen fluoride as a solvent and with boron trifluoride as a catalyst, the polycondensation reaction being carried out by a method in which the reaction mixture is a homogeneous solution.

REFERENCES:
patent: 3065205 (1962-11-01), Bonner, Jr.
patent: 3385825 (1968-05-01), Goodman et al.
patent: 3441538 (1969-04-01), Marks
patent: 3516966 (1970-06-01), Berr
patent: 3767620 (1973-10-01), Angelo et al.
patent: 3956240 (1976-05-01), Dahl et al.
patent: 4396755 (1983-08-01), Rose
patent: 4398020 (1983-08-01), Rose

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