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Title:
TONING AGENT
Document Type and Number:
WIPO Patent Application WO/2000/023526
Kind Code:
A1
Abstract:
A toning agent for azo pigments, a toned azo pigment, and a process for producing the same. 2-Hydroxynaphthalene-3,6-dicarboxylic acid and a derivative thereof are incorporated into a main coupler ingredient for an azo pigment. The resultant mixture is coupled with an aromatic diazonium salt.

Inventors:
Ueno, Ryuzo (10-27, Nango-cho Nishinomiya-shi, Hyogo, 662-0038, JP)
Kitayama, Masaya (3-76, Yamamotohigashi Takarazuka-shi, Hyogo, 665-0881, JP)
Minami, Kenji (3-15-2, Onosato Sennan-shi, Osaka, 590-0526, JP)
Kubotsu, Masamitsu (7-18, Takatsuka-cho Nishinomiya-shi, Hyogo, 662-0066, JP)
Application Number:
PCT/JP1999/005657
Publication Date:
April 27, 2000
Filing Date:
October 14, 1999
Export Citation:
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Assignee:
KABUSHIKI KAISHA UENO SEIYAKU OYO KENKYUJO (4-8 Koraibashi 2-chome, Chuo-ku Osaka-shi, Osaka, 541-0043, JP)
Ueno, Ryuzo (10-27, Nango-cho Nishinomiya-shi, Hyogo, 662-0038, JP)
Kitayama, Masaya (3-76, Yamamotohigashi Takarazuka-shi, Hyogo, 665-0881, JP)
Minami, Kenji (3-15-2, Onosato Sennan-shi, Osaka, 590-0526, JP)
Kubotsu, Masamitsu (7-18, Takatsuka-cho Nishinomiya-shi, Hyogo, 662-0066, JP)
International Classes:
C07C65/11; C07C69/94; C07C235/66; C09B29/15; C09B29/20; C09B67/22; (IPC1-7): C09B29/20; C09B57/00; C09B67/20; C09D11/00
Domestic Patent References:
WO1996032366A1
Foreign References:
JPS56116753A
JPS62138561A
Other References:
See also references of EP 1043364A1
Attorney, Agent or Firm:
Aoyama, Tamotsu (Aoyama & Partners IMP Building 3-7, Shiromi 1-chome Chuo-ku, Osaka-shi Osaka, 540-0001, JP)
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