Aromatic polyethersulphones having --OCH.sub.2 COR end groups

Details Aromatic polyethersulphones having --OCH.sub.2 COR end groups Aromatic polyethersulphones having --OCH.sub.2 COR end groups

1979-02-22

1981-10-20

Anderson, Harold D.

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

Synthetic resins

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

428411, 428426, 525397, 525534, 525535, 528125, 528126, 528128, 528173, 528174, 528175, 528212, 528219, C08G 6548

Patent

active

042962170

ABSTRACT:
Aromatic polyethersulphones that are particularly useful as adhesives and coatings having end groups of formula --OCH.sub.2 COR, where R is alkyl or alkoxy. Preferred examples are --OCH.sub.2 COCH.sub.3 and --OCH.sub.2 COOC.sub.2 H.sub.5. Such polymers may be made by heating polyethersulphones made from halophenates or bisphenate/dihalide mixtures, in the presence of a reagent of formula XCH.sub.2 COR (X is halogen, preferably chlorine), such as chloroacetone or ethyl chloroacetate, for a short period of time. Such polymers of molecular weight (RV<0.25) are of particular use in coating compositions comprising a dispersion of a fluorocarbon polymer dispersed in a solution or dispersion of the polyethersulphone.

REFERENCES:
patent: 4105635 (1978-08-01), Freeman
patent: 4105636 (1978-08-01), Taylor
patent: 4108837 (1978-08-01), Johnson et al.

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