Manufacture of aromatic polymers containing ketone and sulphone

Details Manufacture of aromatic polymers containing ketone and sulphone Manufacture of aromatic polymers containing ketone and sulphone

1977-06-28

1978-08-08

Lee, Lester L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528125, 528174, 528175, 528212, 528218, 528219, C08G 6540

Patent

active

041056353

ABSTRACT:
Aromatic polyetherketones and polyether sulphones are prepared from a hydrated alkali metal bisphenate by heating a substantially equimolar mixture of the bisphenate and an activated aromatic dihalide in the presence of an aromatic sulphone to distil off the water, preferably at atmospheric pressure, and then heating at temperatures in the range 250.degree. to 400.degree. C. to effect polymerization.

REFERENCES:
patent: 3647751 (1972-03-01), Darsow
patent: 3928295 (1975-12-01), Rose

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