Ion exchanger having hydroxyl groups bonded directly to backbone skeleton
AssigneeAsahi Kasei Kogyo Kabushiki Kaisha
InventorYuzo Yanagihara
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Abstract
An ion exchanger comprising a crosslinked copolymer and an ion exchange group, wherein an alcoholic hydroxyl group is bonded directly to the skeleton of a matrix of totally porous organic synthetic crosslinked copolymer. The ion exchanger has a predetermined hydroxyl group content, predetermined ion exchange group content, predetermined water regain value and predetermined specific surface area. The ion exchanger having a high mechanical strength and high chemical stability and not causing non-specific adsorption of bio-substances is useful as a high-speed liquid chromatography packing material and separating membrane, especially for bio-substances, such as protein, enzyme, peptide, amino acid, nucleotide or the like.
Claims19
An ion exchanger which comprises:
- a matrix comprising a backbone structure and functional groups bonded to said backbone structure, said matrix being a totally porous organic synthetic crosslinked copolymer of vinyl compound monomer units and crosslinkable monomer units;
- an alcoholic hydroxyl group bonded directly to said backbone structure, the content of said hydroxyl group being in the range of 1.0 to 14.0 meq/g of the dry ion exchanger;
- and
- an ion exchange group bonded to said matrix, the content of said ion exchange group being in the range of 0.02 to 5.0 meq/g of the dry ion exchanger, and
- wherein said ion exchanger has a water regain value of 0.5 to 4.0 g/g of the dry ion exchanger and a specific surface area of 5 to 1000 m.sup.2 /g of the dry ion exchanger.
An ion exchanger which comprises:
- a matrix comprising a backbone structure and functional groups bonded to said backbone structure, said matrix being a totally porous organic synthetic crosslinked copolymer of vinyl compound monomer units and crosslinkable monomer units;
- an alcoholic hydroxyl group bonded directly to said backbone structure and bonded to a carbon atom of a repeating unit of the formula ##STR6## the content of said hydroxyl group being in the range of 1.0 to 14.0 meq/g of the dry ion exchanger;
- and
- an ion exchange group bonded to said matrix, the content of said ion exchange group being in the range of 0.02 to 5.0 meq/g of the dry ion exchanger, and
- wherein said ion exchanger has a water regain value of 0.5 to 4.0 g/g of the dry ion exchanger and a specific surface area of 5 to 1000 m.sup.2 /g of the dry ion exchanger.
Dependencies are inferred from the claim text.