申请人:Mitsubishi Pencil Company, Limited
公开号:EP2772517A1
公开(公告)日:2014-09-03
Provided are a colorant represented by the following Formula (I) which is excellent in a color intensity and a lightfastness, a microcapsule pigment prepared by using the above colorant, and an ink composition for writing instruments:
[in Formula (I) described above, X and Y represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or a halogen atom; and X and Y may be identical or different from each other, provided that a case in which both of X and Y are a hydrogen atom is excluded].
The above microcapsule pigment is characterized by comprising at least the colorant comprising the leuco dye represented by Formula (I) described above, a developer and a chromic temperature controller, and the ink composition for writing instruments is characterized by comprising the above microcapsule pigment.
本文提供了一种由下式 (I) 表示的着色剂,其着色强度和耐光性都非常出色;还提供了一种使用上述着色剂制备的微胶囊颜料,以及一种书写工具用墨水组合物:
[在上述式(I)中,X 和 Y 代表氢原子、具有 1 至 4 个碳原子的烷基或卤素原子;X 和 Y 可以相同或不同,但不包括 X 和 Y 均为氢原子的情况]。
上述微胶囊颜料的特征在于至少包含由上述式(I)代表的白兰地染料组成的着色剂、显影剂和色温控制器,书写工具用墨水组合物的特征在于包含上述微胶囊颜料。