Crystalline aromatic polyethersulphones having terphenylene link

Details Crystalline aromatic polyethersulphones having terphenylene link Crystalline aromatic polyethersulphones having terphenylene link

1989-02-27

1990-10-02

Foelak, Morton

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528126, 528128, 528174, 528175, C08G 6112

Patent

active

049608517

ABSTRACT:
A crystalline polyethersulphone comprises repeating units Ph SO.sub.2 Ph.sub.3 SO.sub.2 Ph alone or together with Ph.sub.n and optionally together with up to 20 mole % of other repeating units, said units being connected by ether linkages, and wherein Ph is 1,4 - phenylene and n is an integer 1 or 2.

REFERENCES:
patent: 3770832 (1973-11-01), Leslie
patent: 4446294 (1984-05-01), Rose et al.
patent: 4486576 (1984-12-01), Colon et al.

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