Production process of film and column for cation chromatography

摘要

One object of the present invention is to produce a weakly acidic cation exchanger under mild conditions. Another object of the present invention is to produce a more firm weakly acidic cation exchange film. Still another object of the present invention is to provide a weakly acidic cation exchanger capable of realizing high-level separation of monovalent cation and simultaneously analyzing monovalent cation and divalent cation and also provide a chromatography column using the ion exchanger. In the production method of a weakly acidic cation exchanger of the invention, a solvent incapable of dissolving a polymer having a double bond within the molecule is used and the weakly acidic cation exchanger is produced by polymerization at temperature of 100° C. or less.

主权项

1. A film production process comprising the following steps (1) and (2):
Step (1):
a step of coating a polymer having a double bond within the molecule on an organic porous support,wherein:
the polymer having a double bond within the molecule is an unsaturated carboxylic acid-diene monomer copolymer and/or an unsaturated carboxylic anhydride-diene monomer copolymer,andthe organic porous support is selected from the group consisting of polystyrene gel, poly(meth)acrylate gel and polyvinyl alcohol gel, Step (2):
a step of placing the support coated with the polymer in a solvent incapable of dissolving the polymer coated, to cause a crosslinking reaction of the double bond within the molecule in the presence of radical polymerization initiators and thereby form a film.