| 摘要 |
PURPOSE:To improve the water resistance and the resistance to plasticizer, by using as a binder an epihalohydrin reaction product of the copolymer of a (meta)acrylic containing a specified amino alkyl group and an ethylene unsaturated monomer containing a specified alkyl group. CONSTITUTION:An epihalohydrin reaction product of the copolymer of a (meta) acrylic containing an amino alkyl group represented by the formula and of an ethylene unsaturated monomer containing an alkyl group having eight or more carbons is used as a binder. Dimethylaminomethyl (meta)acrylate or the like can be cited as the (meta)acrylic containing the amino alkyl group. The composition is prepared by making a water dispersion of a color development material and a water dispersion of a developer separately, agitating each dispersion sufficiently so as for the respective material to be fined, and then mixing and agitating the two dispersions. The binder component is properly 10-200wt% to the total amount of the color development material and the developer. |
