Patent ID: 11969696
Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  Y | IPC B  C

Claim 0:
1. A multi-laver membrane, comprising:
a porous support layer comprising a polysulfone; and
a selective layer comprising a polyamide comprising 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), 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.