Patent ID: 11879033
Assignee: PROMERUS, LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC C  H  B  Y | IPC B  C  H

Claim 17:
18. A method for the formation of a membrane according to claim 10 comprising:
a) casting a film of a polymer according to claim 10, wherein X is bromine;
b) reacting the film with NR5R6R7 in the presence of a base, wherein at least one of R5, R6 and R7 is selected from the group consisting of:
(C1-C10)alkyleneN(R5′)(R6′), (C3-C8)cycloalkyleneN(R5′)(R6′), (C1-C10)alkylene(C3-C8)cycloalkyleneN(R5′)(R6′), (C1-C10)alkylene(C3-C8)cycloalkylene(C1-C10)alkyleneN(R5′)(R6′), (C1-C10)alkylene(C6-C10)aryleneN(R5′)(R6′) and (C1-C10)alkylene(C6-C10)arylene(C1-C10)alkyleneN(R5′)(R6′);
R5′ and R6′ are the same or different and independently of each other selected from the group consisting of linear or branched (C1-C10)alkyl, (C3-C8)cycloalkyl, (C1-C10)alkyl(C3-C8)cycloalkyl and (C1-C10)alkyl(C6-C10)aryl;
the remaining R5, R6 and R7 are the same or different and independently of each other selected from the group consisting of linear or branched (C1-C10)alkyl, (C3-C8)cycloalkyl, (C1-C10)alkyl(C3-C8)cycloalkyl and (C1-C10)alkyl(C6-C10)aryl; and
c) reacting the film from step b) with a tertiary amine of the formula NR5′R6′R7′ in the presence of a base; where R5′, R6′ and R7′ are the same or different and independently of each other selected from the group consisting of linear or branched (C1-C10)alkyl, (C3-C8)cycloalkyl, (C1-C10)alkyl(C3-C8)cycloalkyl and (C1-C10)alkyl(C6-C10)aryl.