| 摘要 |
PURPOSE:To reduce the thickening tendency of ink with the elapse of time, to shorten the curing time due to the irradiation with light, to enhance offset printability and to obtain excellent desensitizing effect by adding a reaction product obtained by adding alkylene oxide to piperazine and further adding glycidyl ester or glycidyl ether to a part of the added chain terminal of the formed adduct as a desensitizing agent. CONSTITUTION:A reaction product obtained by adding alkylene oxide to piperazines and further adding glycidyl ester or glycidyl ether to at least a part of the added chain terminal of the formed adduct is added to desensitizing ink for pressure-sensitive copy paper using a compound having a photo-setting ethylenic unsaturated double bond as a desensitizing agent. As piperazines, for example, piperazine or 1-amino-4-cyclopentylpiperazine is designated and, as alkylene oxide, ethylene oxide or butylene oxide is designated. As glycidyl ester, for example, glycidyl butylate or glycidyl caprilate is designated. |
