发明授权
US5302571A Crystals of fluoran compound, crystalline solvates thereof, process for
their preparation and recording material comprising said crystal or
said solvate
失效
氟化合物的晶体，其结晶溶剂合物，其制备方法和包含所述晶体或所述溶剂合物的记录材料
- 专利标题： Crystals of fluoran compound, crystalline solvates thereof, process for their preparation and recording material comprising said crystal or said solvate
- 专利标题（中）： 氟化合物的晶体，其结晶溶剂合物，其制备方法和包含所述晶体或所述溶剂合物的记录材料
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申请号： US075935申请日： 1993-06-14
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公开(公告)号： US5302571A公开(公告)日： 1994-04-12
- 发明人: Atsuo Otsuji , Masakatsu Nakatsuka , Kiyoharu Hasegawa , Kazuyoshi Kikkawa , Akihiro Yamaguchi
- 申请人： Atsuo Otsuji , Masakatsu Nakatsuka , Kiyoharu Hasegawa , Kazuyoshi Kikkawa , Akihiro Yamaguchi
- 申请人地址： JPX Tokyo
- 专利权人： Mitsui Toatsu Chemicals, Inc.
- 当前专利权人： Mitsui Toatsu Chemicals, Inc.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX2-182641 19900712; JPX2-263040 19901002; JPX3-30956 19910226
- 主分类号： B41M5/145
- IPC分类号： B41M5/145 ; B41M5/327 ; C09B11/24 ; B41M5/30
摘要：
Disclosed are a crystal and crystalline solvate of a fluoran compound represented by the formula ##STR1## wherein R.sub.1 is ##STR2## and which are useful as chromogenic compounds in recording materials such as pressure-sensitive and heat-sensitive recording materials, a process for preparation of said crystal and said crystalline solvate, and recording materials comprising said crystal or said crystalline solvate.
公开/授权文献
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