Title:
近赤外線吸収性ポリアゾ化合物およびその製造方法
Document Type and Number:
Japanese Patent JP4244243
Kind Code:
B2
Abstract:
A polyazo compound capable of effectively absorbing near-infrared rays, which can be produced from readily available raw materials is provided, which comprises at least one -OH group or at least one group derived from -OH group at p-position of the azo group in the molecule of the polyazo compound. This compound can be produced by diazotizing a substituted or nonsubstituted aromatic monocyclic or polycyclic compound or heterocyclic compound, each having a diazotizable primary amino group, and successively coupling the resulting diazo component with an azo component having a diazotizable primary amino group, the last azo component being such that -OH group or a group derived from -OH group be present at p-position to the azo group resulting from the azo component.
Inventors:
Shigeichi Matsumoto
Takao Yanagisawa
Shigeo Matsumoto
Kunio Shimabukuro
Takao Yanagisawa
Shigeo Matsumoto
Kunio Shimabukuro
Application Number:
JP7569698A
Publication Date:
March 25, 2009
Filing Date:
March 24, 1998
Export Citation:
Assignee:
Hakkor Chemical Co., Ltd.
International Classes:
C07C245/08; G11B7/244; B41M5/26; C07C309/46; C07C309/47; C09B31/068; C09B31/20; C09B33/28; C09B35/215; C09B35/56; C09B43/28; C09B56/00; C09B56/04; C09K3/00
Domestic Patent References:
| JP9504314A | ||||
| JP7166081A | ||||
| JP10001633A | ||||
| JP4211457A |
Foreign References:
| US2794798 |
Attorney, Agent or Firm:
Toshiko Hiraishi
Ryoichi Hagiwara
Atsushi Anzai
Ryoichi Hagiwara
Atsushi Anzai