发明名称 |
PRESSURE SENSITIVE COPYING PAPER |
摘要 |
<p>The present invention discloses novel fluoran compound useful as the lactone electron donative color-forming agents having the general formula: <IMAGE> wherein, R1, R2 and R4 are respectively hydrogen, methyl or ethyl groups; R3 is hydrogen or a methyl group; and R5 is a phenyl group or a phenyl group substituted with from one to five methyl groups. The compound of the invention is soluble in aromatic solvents as well as in aromatic-aliphatic mixed solvents and also has excellent light fastness after developing color.</p> |
申请公布号 |
CA1005819(A) |
申请公布日期 |
1977.02.22 |
申请号 |
CA19710118589 |
申请日期 |
1971.07.19 |
申请人 |
YAMAMOTO KAGAKU GOSEI KABUSHIKI KAISHA |
发明人 |
HATANO, YOSHIHIRO;YAMAMOTO, KENJI |
分类号 |
B41M5/145;C09B11/24;C09B11/28 |
主分类号 |
B41M5/145 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|