1. Field of the Invention
The invention relates to a curable composition and a cured polymer product.
2. Description of the Related Art
The ion exchange membrane is used in electrodeionization (EDI), continuous electrodeionization (CEDI), electrodialysis (ED), and electrodialysis reversal (EDR). The ion exchange membrane is used not only for general usage but also for medical use, and recently the ion exchange membrane has also been used in a solid polymer electrolyte-type fuel cell.
The electrodeionization (EDI) is a water treatment process for removing ions from aqueous liquids by using an ion exchange membrane and a potential in order to achieve ion transport. EDI differs from other water purification technologies, such as conventional ion exchange, in that it is does not require the use of chemicals such as acids or caustic soda, and can be used to produce ultra pure water. The electrodialysis (ED) and the electrodialysis reversal (EDR) are electrochemical separation processes for removing ions and the like from water and other fluids.
Recently, the ion exchange membrane has been generally manufactured in the method of thermally polymerizing a styrene-based monomer and introducing an ion exchangeable substituent (quaternary ammonium salt group or sulfo group) by substitution reaction or the like (for example, see JP2006-225459A). Recently, research for improving a film provided with ionic groups and crosslinking bonds at high density has been actively conducted by using a monomer (also referred to as a charged crosslinker or an ionic crosslinking agent) also having an ionic group and a crosslinking group (2 or more polymerizable groups). For example, mainly in a polymer, an anion exchange membrane (for example, see WO2013/011273A) having a cationic group such as quaternary ammonium or a cation exchange membrane (for example, see WO2013/011272A, JP2007-305371A, and JP2011-189223A) having an anionic group such as a sulfo group is suggested.