NEAR-INFRARED RAY-ABSORBING COLORING MATTER

Title:

NEAR-INFRARED RAY-ABSORBING COLORING MATTER

Document Type and Number:

Japanese Patent JP2005023104

Kind Code:

A

Abstract:

To obtain a near-infrared ray-absorbing coloring matter excellent in light resistance.

This near-infrared ray-absorbing coloring matter comprises an ion pair combination of a substituted benzenedithiol-metal complex anion represented by formula (1) and a polymethine coloring matter cation represented by a specific chemical formula. In formula (1), R1 and R2 are each independently a 1-6C alkyl, 1-8C alkylamino, optionally substituted morpholino, optionally substituted piperidino, optionally substituted pyrrolidino, optionally substituted thiomorpholino, optionally substituted piperazine or optionally substituted phenyl group; and M is a transition metal atom.

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Inventors:

NISHIGUCHI HIDEAKI
FUJISAWA AKIYUKI
SUZUKI MICHIO
NAKANISHI ISAO

Application Number:

JP2003186620A

Publication Date:

January 27, 2005

Filing Date:

June 30, 2003

Export Citation:

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Assignee:

SUMITOMO SEIKA CHEMICALS
YAMADA CHEM CO

International Classes:

C09K3/00; C09B23/00; C09B57/10; C09B69/02; (IPC1-7): C09B69/02; C09B23/00; C09B57/10; C09K3/00

Attorney, Agent or Firm:

Mitsuo Tanaka
Masaki Yano

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