| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a suspension polymer which contains a leuco dye as the color developing compound, can utilize not only heating but also an organic solvent as the decoloring means, excels in water resistance and light resistance and, in addition, is uniform in the particle diameter and the particle shape, and spherical. <P>SOLUTION: The suspension polymer develops color by containing at least a leuco dye and a developer. <P>COPYRIGHT: (C)2003,JPO</p> |
