Aromatic polymers

Details Aromatic polymers Aromatic polymers

1989-12-21

1991-09-17

Kight, III, John

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528174, 528175, 528219, 374125, G01J 500, C08G 6538, C08G 7524

Patent

active

050496425

ABSTRACT:
Sulphonated polyarylethers or thioethers are formed by polycondensing difunctional monomers having phenolic and/or thiophenolic and/or halogenic end groups in the presence of a dipolar aprotic solvent, at least to one of which monomers a sulphonic acid or a sulphonate salt is attached. The monomer(s) which the sulphonate group is attached is selected from monomers of formula I:

REFERENCES:
patent: 4654410 (1987-03-01), Kashiwame et al.
patent: 4866099 (1989-09-01), Hendy

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