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Patent Searching and Data


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 (JP)
KITAYAMA MASAYA (JP)
MINAMI KENJI (JP)
KUBOTSU MASAMITSU (JP)
Application Number:
PCT/JP1999/005657
Publication Date:
April 27, 2000
Filing Date:
October 14, 1999
Export Citation:
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Assignee:
UENO SEIYAKU OYO KENKYUJO KK (JP)
UENO RYUZO (JP)
KITAYAMA MASAYA (JP)
MINAMI KENJI (JP)
KUBOTSU MASAMITSU (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:
WO1996032366A11996-10-17
Foreign References:
JPS56116753A1981-09-12
JPS62138561A1987-06-22
Other References:
See also references of EP 1043364A4
Attorney, Agent or Firm:
Aoyama, Tamotsu (Shiromi 1-chome Chuo-ku, Osaka-shi Osaka, JP)
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