| 摘要 |
PURPOSE:To obtain a desensitized ink having high desensitizability and excellent adaptability to printing, by using an alkylene oxide adduct and/or a styrene oxide adduct of a specified 3-alkoxypropylamine as a desensitizer. CONSTITUTION:An adduct of an alkylene oxide such as ethylene oxide to a 3-alkoxypropylamine of the formula: R-O-(CH2)3-NH2, wherein R is an alkyl group having 8 or more carbon atoms, an adduct of styrene oxide to the amine or a coadduct of alkylene oxide and styrene oxide to the amine (with the molar number of addition of at least 8mol in total) is used as a desensitizer, to which a pigment such as titanium dioxide or zinc oxide and a vehicle are added to obtain a desensitized ink. When an ultraviolet-curing vehicle containing a compound having an unsaturated bond, such as ethylene glycol, a photopolymerization initiator or the like is used, an ultraviolet-curing desensitized ink can be obtained. |
