Hydrophilic crosslinked copolymer

Abstract

Abstract PURPOSE:A hydrophilic crosslinked copolymer which can retain much water and is excellent in mechanical strength and suitable as, for example, a packing for liquid chromatography, containing hydroxyl groups derived from vinyl alcohol units and carboxyl groups. CONSTITUTION:The hydrophilic crosslinked copolymer contains 1-14meq per gram of polymer of hydroxyl groups derived from vinyl alcohol units and 0.05- 5meq per gram of polymer of carboxyl groups and can retain 0.5-4g per gram of polymer of water. This hydrophilic copolymer can be obtained, for example, by preparing a copolymer comprising a vinyl crboxylate ester and a crosslinking monomer containing a triazine ring (e.g., triallyl isocyanurare), converting about 10-80% of the ester groups of the copolymer into hydroxyl groups by saponification or ester interchange, and reacting part of the hydroxyl groups with a dibasic acid anhydride or the like.

Inventors

• 👤 Yuzo Yanagihara
• 👤 柳原　裕三

Bibliographic Details