Ionomeric cross-linkers and membranes formed therefrom
AssigneeItm Power (Research) Limited
InventorShaun Wright
Life of this patent
Estimating the term…
Abstract
The present invention is the use of a compound comprising two or more covalently bonded polymerisable vinyl groups and one or more covalently bonded ionic groups selected from a quaternary ammonium group; a quaternary phosphonium group; or a tertiary sulphonium group, as an ionic cross-linker. The cross-linkers of the invention may be used to form an ionomer membrane. Methods for forming the cross-linkers of the invention are also disclosed.
Claims17
Use of a compound comprising two or more covalently bonded polymerisable vinyl groups and one or more covalently bonded ionic groups, as an ionic cross-linker in a method of crosslinking a polymer membrane;
- wherein the covalently bonded ionic group is a quaternary ammonium group selected from one or more of quaternized tris(dimethylaminomethyl)phenol (TDMAP), 1,4diazabicyclo[2.2.2]octane (DABCO), tetramethylthiourea, tetramethylurea and 1,3,5trimethylhexahydro-1,3,5-triazine (TMHHT).
Use of a compound comprising two or more covalently bonded polymerisable vinyl groups and one or more covalently bonded ionic groups, as an ionic cross-linker linker in a method of crosslinking a polymer membrane, wherein the compound has the formula I:
- wherein:
- X is NR2, PR2 or S;
- each R1 and R2 is independently C1 to C6 alkyl;
- R3 is H or C1 to C6 alkyl;
- and
- Y is a counterion.
A compound of formula I:
- wherein:
- X is NR2, PR2 or S;
- each R1 and R2 is independently C1 to C6 alkyl;
- R3 is H or C1 to C6 alkyl;
- and
- Y is a counterion;
- or of formula II:
Dependencies are inferred from the claim text.