| abstract |
Ion exchange membranes obtainable by curing a composition comprising: (a) a monomer comprising an aromatic group and at least one polymerisable ethylenically unsaturated group; (b) a photoinitiator which has an absorption maximum at a wavelength longer than 380nm when measured in one or more of the following solvents at a temperature of 23°C: water, ethanol and toluene; and (c) at least one co-initiator. |