| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a binder for a recording sheet suitable for a white pigment layer of the recording sheet using an aqueous ink. <P>SOLUTION: The binder for the recording sheet for the white pigment layer contains cationic acrylic emulsion of a copolymer which is obtained by emulsion-polymerizing a mixture of monomers selected from a group consisting of (meth)acrylates except an amino group-containing (meta)acrylic monomer using alkyl bis(2-hydroxyethyl) methyl ammonium chloride (EO=2) as a cationic emulsifier and which has a glass transition temperature of -40 to 80°C and a particle diameter of 50 to 300 nm. The binder for the recording sheet containing the cationic acrylic emulsion gives the recording sheet which shows a high print density, shows excellence in clearness and resolution, particularly shows good image preservation due to the water resistance, and further causes little omission of an absorbent such as silica. Since the binder has the characteristics, the binder is practically very advantageous. <P>COPYRIGHT: (C)2011,JPO&INPIT |
