| 摘要 |
<p>A liquid absorption agent for water or organic solvents comprising, as a main component, a crosslinked N-vinylcarboxylic acid amide resin comprising the backbone chain of a homopolymer or copolymer comprising repeating units of the formula shown below crosslinked with a crosslinking agent: <CHEM> wherein R<1>, R<2>, and R<3> independently represent a hydrogen atom or methyl; X represents a group -COOY, wherein Y represents a hydrogen atom, an alkali metal, C1 - C6 alkyl, or lower alkyl substituted with hydroxyl, dialkylamino or quaternary ammonium group; a group -CONHZ, wherein Z represents a hydrogen atom or lower alkyl substituted with a dialkylamino group, quaternary ammonium group, sulfonic acid or an alkali metal salt thereof; cyano, 2-ketopyrrolidinyl, lower alkoxy, lower acyl, lower acyloxy or lower alkyl substituted with sulfonic acid or an alkali metal salt thereof, with a proviso that when R<3> is methyl, X is not cyano, 2-ketopyrrolidinyl, lower alkoxy, lower alkylcarbonyl, lower alkoxycarbonyl and lower alkyl substituted with sulfonic acid or a salt thereof; M represents a hydrogen atom or an alkali metal; p represents 0 or 1; and a molar ratio of m:n is 50 - 100 : 50 - 0.</p> |
