| 摘要 |
PURPOSE:To enhance a desensitizing effect especially to a polyvalent metal salt of salicylic acid derivative, by preparing a desensitizing ink for pressure sensitive paper with use of a polyether amine derivative shown by a specific general formula. CONSTITUTION:A diamine derivative is produced by the reaction of a polyalkylene glycol shown by a formula I (R represents H or alkylene group and (n) represents an average 1-100) with ammonia, or a polyether amine derivative shown by a formula II [R1-R4 represent H, a formula III, and a formula IV (R6, R7 are H and a lower alkyl group); R5 represents H and a lower alkyl group; and (n) represents an average 1-100] is obtained by the addition reaction of the aforesaid derivative with an alkylene oxide or a hydroxyl alkyl(meth)acrylate. A desensitizing ink is prepared by incorporating this material as a desensitizer approximately 10-60 wt.% in the nonvolatile content of the desensitizing ink. |
