| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a color developer microcapsule which alleviates dirt (deposit) inside the tank during manufacture and connotes an electron donor colorless dye in a hydrophobic liquid which is excellent in color development and pressure proof quality, and to provide a pressure-sensitive copying paper using the color developer microcapsule. <P>SOLUTION: There is provided the color developer microcapsule wherein the degree of polymerization of polyvinyl alcohol is 1,000 or less and the pressure-sensitive copying paper using the color developer microcapsule, in the color developer microcapsule having a polyurethane film which is obtained by adding a hydrophobic liquid containing the electron donor colorless dye and a polyisocyanate into the water-soluble liquid containing the polyvinyl alcohol as an emulsifier. <P>COPYRIGHT: (C)2010,JPO&INPIT |
