Sulphonated polyaryletherketones

Details Sulphonated polyaryletherketones Sulphonated polyaryletherketones

1979-08-21

1981-05-19

Lee, Lester L.

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

Synthetic resins

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

528125, 528126, 528128, 528174, 528175, C08G 6540, C08G 7523

Patent

active

042686504

ABSTRACT:
A polyaryletherketone polymer which is a hydrophilic sulphonated polymer derived by controllably sulphonating a polymer having the repeat unit of formula ##STR1## alone or in conjunction with the repeat unit of formula ##STR2## the latter units, if present, remaining substantially non-sulphonated after sulphonation. The sulphonation may be effected using 98% w/w concentrated sulphuric acid.

REFERENCES:
patent: 3663509 (1972-05-01), Bonnard et al.
patent: 3709841 (1973-01-01), Quentin
patent: 3875096 (1975-04-01), Graefe et al.
patent: 4010147 (1977-03-01), Rose
patent: 4054707 (1977-10-01), Quentin
patent: 4105635 (1978-08-01), Freeman

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