Title:
シアニン色素
Document Type and Number:
Japanese Patent JP4666869
Kind Code:
B2
Abstract:
The object of the present invention is to provide organic dye compounds which exert satisfactory optical absorption properties and thermal resistance when used in high density optical recording media. The above object is solved by specific trimethine cyanine dyes, light absorbents and optical recording media which comprise the cyanine dyes, and preparations for the cyanine dyes comprising either reacting a benzoindolium compound having a compatible leaving group with a pyrazinoimidazolium compound having a reactive methyl group; or reacting a benzoindolium compound having a reactive methyl group with a pyrazinoimidazolium compound having a compatible leaving group.
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Inventors:
Chiaki Kasada
Katsumi Orita
Kentaro Yano
Toshio Kawada
Shigeo Yasui
Katsumi Orita
Kentaro Yano
Toshio Kawada
Shigeo Yasui
Application Number:
JP2001562630A
Publication Date:
April 06, 2011
Filing Date:
December 26, 2000
Export Citation:
Assignee:
Hayashibara Institute of Biochemistry
International Classes:
C09B23/00; B41M5/26; C09B23/06; C09B69/02; C09B69/04; G11B7/24035; G11B7/244; G11B7/2467; G11B7/2472; G11B7/249
Domestic Patent References:
| JP2000343821A | 2000-12-12 | |||
| JPH0422679A | 1992-01-27 | |||
| JPH0351182A | 1991-03-05 | |||
| JP2000198273A | 2000-07-18 |
Foreign References:
| WO1998029257A1 | 1998-07-09 | |||
| WO1998028737A1 | 1998-07-02 |