US Patent:
20130327714, Dec 12, 2013
Inventors:
Radwan A. Alrasheed - San Jose CA, US
Blake W. Davis - Hollister CA, US
Jacquana T. Diep - San Jose CA, US
Geraud J. Dubois - Los Altos CA, US
Young-Hye Na - San Jose CA, US
Majed S. Nassar - San Jose CA, US
Ankit Vora - San Jose CA, US
Assignee:
King Abdulaziz City for Science and Technology (KACST) - Riyadh
International Business Machines Corporation - Armonk NY
International Classification:
B01D 71/56
B05D 1/36
B05D 3/02
B01D 61/02
US Classification:
210652, 21050038, 427402, 427384, 4274071
Abstract:
A thin film composite membrane includes an active layer on a support membrane, wherein the active layer includes at least two chemically distinct first and second crosslinked polyamide film sub-layers. The first film sub-layer includes a polyamide unit; and the second film sub-layer includes a copolyamide with two chemically distinct polyamide units. The first film sub-layer is closer to the support than is the second film sub-layer.