Amphoteric metal oxides as cocatalyst in the electrophilic synth

Details Amphoteric metal oxides as cocatalyst in the electrophilic synth Amphoteric metal oxides as cocatalyst in the electrophilic synth

1995-07-06

1997-03-18

Dodson, Shelley A.

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

Synthetic resins

Polymer of an ethylenically unsaturated reactant with a...

528222, 528223, 528224, 528225, 528271, C08G 6702, C08G 802

Patent

active

056124511

ABSTRACT:
Polyaryl ether ketones are prepared by electrophilic polycondensation using acyl halides as monomer components in the presence of a Lewis acid, by a process in which from 0.001 to 60% by weight of an inert filler or of a component which can be converted into an inert filler during working up are added to the reaction mixture before or during the polycondensation.

REFERENCES:
patent: 3925307 (1975-12-01), Dahl et al.
patent: 4709007 (1987-11-01), Jansons et al.
patent: 4870153 (1989-09-01), Matzner
patent: 4908425 (1990-03-01), Robeson et al.
patent: 5120818 (1992-06-01), Robeson et al.

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