Title:
FLUORAN COMPOUND AND RECORDING MATERIAL CONTAINING THE COMPOUND
Document Type and Number:
Japanese Patent JP3170374
Kind Code:
B2
Abstract:
PURPOSE: To obtain a new compound having excellent developed color tone and storage stability and useful as an electron-donative color-developing agent for pressure-sensitive recording material, heat-sensitive recording material, etc.
CONSTITUTION: The compound of formula I (R1 is 1-8C alkyl; R2 is 5-8C alkyl), e.g. 2-(3-methylanilino)-3-methyl-6-(N-methyl-N-isopentylamino)fluoran. The compound of formula I can be produced by reacting a benzophenone compound of formula II with a diphenylamine compound of formula III (R is H or lower alkyl) in the presence of a dehydrative condensation agent at 0-100°C for several to several tens hr and treating the reactional product with an alkali.
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Inventors:
Satoshi Nakao
Toshihiro Masaoka
Shigeo Fujita
Yojiro Kumagai
Jifuku Kuji
Toshihiro Masaoka
Shigeo Fujita
Yojiro Kumagai
Jifuku Kuji
Application Number:
JP482293A
Publication Date:
May 28, 2001
Filing Date:
January 14, 1993
Export Citation:
Assignee:
Yamamoto Kasei Co., Ltd.
International Classes:
B41M5/145; B41M5/30; B41M5/327; C07D493/10; (IPC1-7): C07D493/10; B41M5/145
Domestic Patent References:
| JP6174883A | ||||
| JP57190049A | ||||
| JP5434909A | ||||
| JP5852356A | ||||
| JP672051A |
Other References:
【文献】米国特許4444591(US,A)
Attorney, Agent or Firm:
Kazuo Shamoto (5 outside)