Production of polyarylene ether sulphones and ketones

Details Production of polyarylene ether sulphones and ketones Production of polyarylene ether sulphones and ketones

1975-11-18

1980-11-04

Lee, Lester L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528126, 528128, 528174, 528220, 528223, 528391, C08G 6538

Patent

active

042321425

ABSTRACT:
Aromatic polymers containing benzenoid groups and oxygen atoms in the polymer chains are made by the action of an alkali metal hydroxide on a dihalogenobenzenoid compound in which each halogen atom is activated by an inert electron-attracting group such as --SO.sub.2 --. When a bis-(4-halogenophenyl) sulphone is reacted with an alkali metal hydroxide, the alkali metal salt of a 4-(4-halogenophenylsulphonyl)phenol is formed as a readily isolated intermediate which polymerizes in the presence or absence of solvent to give a polymer having repeating units of the structure ##STR1##

REFERENCES:
patent: 3886121 (1975-05-01), Yazi et al.

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