US 12,109,538 B2
Polysulfone-supported separation membrane
Isam Hassan Aljundi, Dhahran (SA)
Assigned to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed by KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed on Mar. 13, 2024, as Appl. No. 18/603,314.
Application 18/603,314 is a continuation of application No. 16/655,899, filed on Oct. 17, 2019, granted, now 11,969,696.
Prior Publication US 2024/0261738 A1, Aug. 8, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B01D 69/12 (2006.01); B01D 71/44 (2006.01); B01D 71/62 (2006.01); B01D 71/68 (2006.01); C02F 1/26 (2023.01); C02F 103/08 (2006.01)
CPC B01D 69/125 (2013.01) [B01D 69/12 (2013.01); B01D 71/441 (2022.08); B01D 71/62 (2013.01); B01D 71/68 (2013.01); C02F 1/265 (2013.01); B01D 2323/40 (2013.01); B01D 2325/0283 (2022.08); C02F 2103/08 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A polysulfone-supported separation membrane, comprising:
a porous support layer comprising a polysulfone and polyvinylpyrrolidone, wherein the support layer has a thickness of 50-800 μm;
a selective layer consisting of a polyamide and having a thickness of 0.1 μm to 0.5 μm,
wherein the polyamide comprises as reacted units a polyfunctional acyl halide having at least two acyl halide groups, 4,7,10-trioxa-1,13-tridecanediamine and a cyclic diamine of formula (I)

OG Complex Work Unit Chemistry
wherein:
R1, R2, R3, and R4 are each independently selected from the group consisting of a hydrogen, an optionally substituted alkyl, an optionally substituted cycloalkyl, an optionally substituted arylalkyl, and an optionally substituted aryl;
m and n are each independently 2 or 3;
a weight ratio of the 4,7,10-trioxa-1,13-tridecanediamine to the cyclic diamine (I) in the polyamide is in a range of 1:5 to 2:1; and
the selective layer is disposed on at least a portion of a surface of the porous support layer.