Substituted aromatic polymers

Details Substituted aromatic polymers Substituted aromatic polymers

1989-02-08

1991-04-16

Hoke, Veronica P.

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

Synthetic resins

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

21050025, 21050041, 210630, 210639, 210654, 528128, C08G 7523, C08G 6548

Patent

active

050083520

ABSTRACT:
An aryl-ether and/or thioether polymer contains aromatic rings linked to neighboring units Ph X Ph (when Ph is paraphenylene and X is SO.sub.2 and/or CO) through O and/or S and/or a direct link, at least some of said aromatic rings carrying a nuclear suphonamide group having N-aliphatic substitution, preferably with a cationic amino or quaternary ammonium group.
A process for making aromatic polymer sulphonyl halides and, thus also sulphonamides, of very low sulphonic acid content, is characterized by working up in substantially anhydrous conditions the mixture resulting from the reaction of an inorganic halide with the corresponding sulphonic acid or salt thereof. The polymer sulphonamides are suitable for separation technologies, especially purification of water by reverse osmosis.

REFERENCES:
patent: 2888486 (1959-05-01), Gregory
patent: 3647086 (1972-03-01), Mizutani et al.
patent: 4256862 (1981-03-01), Binsack et al.
patent: 4268650 (1981-05-01), Rose
patent: 4508852 (1985-04-01), Bikson et al.

Affiliated with

Also associated with

Rating

Substituted aromatic polymers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Substituted aromatic polymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Substituted aromatic polymers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-421978