Preparation of permselective composite membrane

Details Preparation of permselective composite membrane Preparation of permselective composite membrane

1978-06-05

1981-04-07

Lawrence, Evan K.

Coating processes

Foraminous product produced

Microporous coating

210490, 2105002, 210506, 260 292N, 521 64, 521180, B05D 500, C08J 926, C08L 7904

Patent

active

042606527

ABSTRACT:
A process and composition for producing a permselective composite membrane. The process comprises dissolving a specified imidazolone ring-containing aromatic polymer in an aqueous liquid medium containing a water-miscible amine having a pKa of more than 5.0 in a concentration of at least 5% by weight, coating the polymer solution on a microporous substrate, and drying the coating to form an ultrathin film on the substrate. The permselective composite membrane obtained is especially useful as a reverse osomsis membrane.

REFERENCES:
patent: 3580841 (1971-05-01), Cadotte et al.
patent: 3648845 (1972-03-01), Riley
patent: 3951815 (1976-04-01), Whasidlo
patent: 4005012 (1977-01-01), Whasidlo
patent: 4039440 (1977-08-01), Cadotte
patent: 4085090 (1978-04-01), Hara et al.
Noller, Carl R., Chemistry of Organic Compounds, W. B. Saunders Co., Philadelphia, 1965, pp. 39-41.
Bikales, Norbert M. (editor), Encyclopedia of Polymer Science and Technology, Interscience Publishers, New York, vol. 7, pp. 478-505 and vol. 11, pp. 168-173, 188, 189, 204-209, 240-247, 264, 265, 464, 465, 486, 487, 494, 495, 500, and 501.
Braudrup, J., et al. (editors), Polymer Handbook, Interscience Publishers, New York, pp. IV-218-IV-223.

Affiliated with

Also associated with

Rating

Preparation of permselective composite membrane does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of permselective composite membrane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of permselective composite membrane will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-289231