| 摘要 |
PURPOSE:To form the barrier layer of a thermal color forming recording layer from a barrier coat agent more improved in preservability, water resistance, plasticizer resistance, chemical resistance and office supplies resistance by forming the barrier layer from a modified polymer prepared by performing the graft polymerization of one of a hydrophobic vinyl monomer and a functional group-containing vinyl monomer on an aqueous polyester resin. CONSTITUTION:A thermal color forming layer 2 is provided on a base material 1 by coating and a modified polymer obtained by performing the graft polymerization of a hydrophobic vinyl monomer and/or a functional vinyl monomer on an aqueous polyester resin is applied to the thermal color forming layer as a barrier layer 3 and a protective layer 4 is applied to said barrier layer 3 as an overcoat layer. A resin curing agent and a coating control agent are compounded with the barrier layer if necessary and a fluorane compound is used in the thermal color forming layer 2 as a leuco dye. A polyurethane resin is suitable for the protective layer and, further, paper of every kind is used as the base material 1. |
