Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1976-04-16
1977-06-28
Anderson, Philip
Gas separation
Means within gas stream for conducting concentrate to collector
260 25M, 264 41, 264216, B01D 1304, B01D 3100, B01D 3916, B29D 2704
Patent
active
040323099
ABSTRACT:
A casting process is set forth for the preparation of microporous membranes from polycarbonate resin material. The polycarbonate resin is dissolved in an organic casting solvent to produce a solution stable at room temperature. The solution is cast as a thin film on a smooth substrate and is permitted to desolvate for at least a few seconds. Film and substrate are immersed in a bath characterized by the capabilities for swelling the polycarbonate resin, and for dissolving the first solvent, while not dissolving the polycarbonate resin. After formation of the film is initiated, the film and substrate are removed from the quenching bath and the film is either water-washed or air dried to attain the full mechanical strength thereof.
REFERENCES:
patent: 3256675 (1966-06-01), Robb
patent: 3526588 (1970-09-01), Michaels et al.
patent: 3615024 (1971-10-01), Michaels
patent: 3767737 (1973-10-01), Lundstrom
patent: 3852388 (1974-12-01), Kimura
Manjikian, S.; S. Loeb; and J. W. McCutchan, "Improvement In Fabrication Techniques for Reverse Osmosis Desalination Membranes," First International Symposium on Water Desalination, Oct. 3-9, 1965, Washington, D.C., SWD/12, pp. 1-3, 13.
U.S. Office of Saline Water, Research and Development Progress Report No. 359, Oct. 1968, "Development of New Reverse Osmosis Membranes for Desalination," by L. T. Rozelle, et al., Washington, D.C., U.S. Dept. of Interior, p. 48.
Kirk-Othmer, Encyclopedia of Chemical Technology, Second Completely Revised Edition, Sections, "Polycarbonates," by H. Schnell, vol. 16, New York, Interscience, c 1968, pp. 106-116.
Anderson Philip
Cohen Joseph T.
General Electric Company
MaLossi Leo I.
Squillaro Jerome C.
LandOfFree
Preparation of microporous polycarbonate resin membranes 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 microporous polycarbonate resin membranes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of microporous polycarbonate resin membranes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1518999