Heterogeneous sulfonation process for difficultly sulfonatable p

Details Heterogeneous sulfonation process for difficultly sulfonatable p Heterogeneous sulfonation process for difficultly sulfonatable p

1982-12-27

1983-11-01

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...

525535, 528174, C08G 6548, C08G 7523

Patent

active

044131062

ABSTRACT:
Novel sulfonated polyarylethersulfones are derived by heterogeneous sulfonation of polymer/solvent intercrystallites of difficultly sulfonatable polyarylethersulfones in chlorinated hydrocarbon solvents with a sulfonation agent.

REFERENCES:
patent: 3709841 (1973-01-01), Quentin
patent: 4054707 (1977-10-01), Quentin
patent: 4208508 (1980-06-01), Hashino et al.
patent: 4268650 (1981-05-01), Rose
patent: 4273903 (1981-06-01), Rose

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