Title:
シアニン色素
Document Type and Number:
Japanese Patent JP4821031
Kind Code:
B2
Abstract:
An organic dye compound which has excellent recording properties in an optical recording medium for high-density recording; and a use of the compound. The compound is an asymmetric trimethine-type cyanine dye having a specific structure and specific properties. Also provided are: a light absorber containing the cyanine dye; an optical recording medium; and a process for producing the cyanine dye through the step of reacting either of a 3,3-dimethyl-5-nitroindolium compound and a 3,3-dimethyl-5-sulfonamidoindolium compound each having an active methyl group or a suitable eliminable group with a 3,3-dimethyl-benzoindolium compound having an active methyl group or a suitable eliminable group.
Inventors:
Chiaki Kasada
Yoshie Hata
Toshio Kawada
Shigeo Yasui
Yoshie Hata
Toshio Kawada
Shigeo Yasui
Application Number:
JP2000611617A
Publication Date:
November 24, 2011
Filing Date:
April 11, 2000
Export Citation:
Assignee:
Hayashibara Institute of Biochemistry
International Classes:
C07D403/06; C09B23/00; C09B69/02; C09B23/06; C09B45/14; C09B45/20; G11B7/247
Domestic Patent References:
| JPH10291373A | 1998-11-04 | |||
| JPH10181211A | 1998-07-07 |