申请人:SHOWA DENKO KABUSHIKI KAISHA
公开号:EP0510246A1
公开(公告)日:1992-10-28
A fine particulate crosslinked type N-vinylcarboxylic acid amide resin having an average particle size of 10 µm or less comprising backbone chains of a homopolymer or copolymer comprising repeating units (A) or (A) and (B) of the formulae:
wherein R¹, R² and R³ each independently represent a hydrogen atom or methyl group; X represents a group -COOY, wherein Y represents a hydrogen atom, an alkali metal, a C₁ - C₁₈ alkyl group or a lower alkyl group substituted with hydroxyl group, a dialkylamino group or a quaternary ammonium group; a group -CONHZ, wherein Z represents a hydrogen atom or a lower alkyl group substituted with a dialkylamino group, a quaternary ammonium group, a sulfonic acid or an alkali metal salt thereof; a cyano group, a 2-ketopyrroridinyl group, a lower alkoxy group, a lower acyl group, a lower alkoxycarbonyl group or a lower alkyl group substituted with sulfonic acid or an alkali metal salt thereof; M represents a hydrogen atom, an alkali metal or an ammonium group, with proviso that when R³ is a methyl group, X is not a cyano group, a 2-ketopyrrolidinyl group, a lower alkoxy group, a lower acyl group, a lower alkoxycarbonyl group and a lower alkyl group substituted with sulfonic acid or an alkali metal salt thereof, p represents 0 or 1, and the molar ratio of m:n represents 30 - 100:70 - 0.
一种细颗粒交联型 N-乙烯基羧酸酰胺树脂,其平均粒径为 10 微米或更小,由均聚物或共聚物的骨架链组成,均聚物或共聚物包括式中的重复单元(A)或(A)和(B):
其中 R¹、R² 和 R³ 各自独立地代表氢原子或甲基; X 代表基团-COOY,其中 Y 代表氢原子、碱金属、C₁-C₁₈ 烷基或被羟基、二烷基氨基或季铵基取代的低级烷基;基团-CONHZ,其中 Z 代表氢原子或被二烷基氨基、季铵基、磺酸或其碱金属盐取代的低级烷基;氰基、2-酮基吡咯烷基、低级烷氧基、低级酰基、低级烷氧羰基或被磺酸或其碱金属盐取代的低级烷基;M 代表氢原子、碱金属或铵基团,但当 R³ 为甲基时,X 不是氰基、2-酮基吡咯烷基、低级烷氧基、低级酰基、低级烷氧基羰基和被磺酸或其碱金属盐取代的低级烷基;p 代表 0 或 1,m:n 的摩尔比为 30 - 100:70 - 0。