	US 11,987,680 B2
	Composite ion exchange membrane and method of making same
Bamdad Bahar, Georgetown, DE (US); and Zhefei Li, Harrington, DE (US)
Filed by FFI IONIX IP, INC., Wilmington, DE (US)
Filed on Jun. 12, 2023, as Appl. No. 18/208,767.
Application 18/208,767 is a continuation of application No. 17/704,814, filed on Mar. 25, 2022, granted, now 11,674,009.
Application 17/704,814 is a continuation of application No. 15/912,416, filed on Mar. 5, 2018, granted, now 11,286,357, issued on Mar. 29, 2022.
Claims priority of provisional application 62/466,644, filed on Mar. 3, 2017.
Prior Publication US 2023/0323053 A1, Oct. 12, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C08J 5/22 (2006.01); B01D 69/12 (2006.01); B01J 41/14 (2006.01); B01J 47/016 (2017.01); B01J 47/12 (2017.01)

CPC C08J 5/2281 (2013.01) [B01D 69/12 (2013.01); B01J 41/14 (2013.01); B01J 47/016 (2017.01); B01J 47/12 (2013.01); C08J 5/22 (2013.01); C08J 5/2231 (2013.01); C08J 5/2262 (2013.01); C08J 5/2287 (2013.01); C08J 2323/06 (2013.01); C08J 2327/18 (2013.01); C08J 2361/18 (2013.01); C08J 2365/00 (2013.01)]

13 Claims

1. A composite ion exchange membrane comprising:

a) a pre-polymer comprising:

i) 2 trifluoromethyl ketone;

ii) 1 biphenyl;

iii) methylene chloride; and

iv) trifluoromethanesulfonic acid,

wherein the prepolymer is configured in the pores of a porous scaffold material;

b) a functional polymer bonded with the prepolymer, said functional polymer selected from the group consisting of hydroxide halide and oxyanions; and

c) trimethylamine; and

wherein said functional polymer is functionalized with said trimethylamine to produce said composite ion exchange membrane having quaternized ammonium hydroxide functional groups.