B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
183/2, 18/24
B01D 53/22 (2006.01) B01D 71/48 (2006.01) B01D 71/50 (2006.01) C08G 63/682 (2006.01)
Patent
CA 1322442
ABSTRACT The invention is a membrane comprising a dense skin of a polyestercarbonate, wherein the diphenolic residue in the backbone of the polyestercarbonate is a tetrabromo diphenolic residue, wherein the membrane has a separation factor for oxygen and nitrogen of 6.5 or greater at 24°C. In another aspect, the invention is a method of separating oxygen from a mixture of gases comprising nitrogen and oxygen, wherein the method comprises (a) contacting the gas mixture with one side of a thin, non-porous membrane comprising a polyestercarbonate described hereinbefore while maintaining a pressure difference across the membrane with the lower pressure being on the other side of the membrane; and (b) removing the permeated oxygen from the other side of the membrane, wherein separation factor for the oxygen and nitrogen is 6.5 or greater at 35,107-F 24°C. The membranes of this invention demonstrate surprisingly high separation factors for oxygen and nitrogen separations. The membranes of this invention have good mechanical properties and therefore are useful under more extreme conditions, for example temperature and pressure, than many commercially used membranes. 35,107-F
533917
Anand Joginder N.
Bales Stephen E.
Feay Darrell C.
Jeanes Thomas O.
Smart & Biggar
The Dow Chemical Company
LandOfFree
Tetrabromo bisphenol based polyestercarbonate membranes and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tetrabromo bisphenol based polyestercarbonate membranes and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tetrabromo bisphenol based polyestercarbonate membranes and... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1221979