Invention Grant
- Patent Title: Color-developing compositions and recording material containing same
- Patent Title (中): 显色组合物和含有它们的记录材料
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Application No.: US12990178Application Date: 2009-05-01
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Publication No.: US08420568B2Publication Date: 2013-04-16
- Inventor: Satoshi Kodama , Toshiyuki Fukami , Hiroshi Fujii , Tadashi Kawakami , Toshio Aihara
- Applicant: Satoshi Kodama , Toshiyuki Fukami , Hiroshi Fujii , Tadashi Kawakami , Toshio Aihara
- Applicant Address: JP Tokyo
- Assignee: Nippon Soda Co., Ltd.
- Current Assignee: Nippon Soda Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Kenyon & Kenyon, LLP
- Priority: JP2008-121604 20080507; JP2008-199680 20080801
- International Application: PCT/JP2009/001989 WO 20090501
- International Announcement: WO2009/136491 WO 20091112
- Main IPC: B41M5/333
- IPC: B41M5/333
Abstract:
Provided is a color-developing composition for recording materials having a superior heat resistance. The color-developing composition is a reaction composition containing a mixture of compounds represented by formula (III) obtained by reacting a dihydroxydiphenylsulfone derivative represented by formula (I) with a dihalide represented by formula (II) X—Y—X (II), wherein, in a composition where the content of a compound with n=1 in said reaction composition is from 5 to 80% by mass of the total solid content of the composition, at least 10% by mass of the compound with n=1 is a crystalline material.
Public/Granted literature
- US20110045973A1 COLOR-DEVELOPING COMPOSITIONS AND RECORDING MATERIAL CONTAINING SAME Public/Granted day:2011-02-24
Information query
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