Title:
AZO LAKE PIGMENT COMPOSITION AND PREPARATION THEREOF
Document Type and Number:
Japanese Patent JP3272950
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain an azo lake pigment compsn. which, when used in a printing ink, can offer an ink possessing heat resistance, transparency, sharpness, tinting strength, fluidity and other properties by using a compound prepd. by substituting a part of a diazonium component in an azo lake pigment by a specific compd.
SOLUTION: This azo lake pigment compsn. is prepd. by coupling a diazonium salt of an aniline deriv. having a water-soluble group with β-naphthol or β-oxynaphthoic acid and conducting laking after or simultaneously with the coupling. This azo lake pigment is one prepd. by substituting 0.1 to 30mol% of an aniline deriv. by a compd. represented by the formula (wherein X represents a carboxyl group; (m)>2 Y represents H, a halogen, or an alkyl, alkoxy, acetyl, hydroxyl, or aryl group; and (n) is 1 to 3) to prepare a mixed diazo component and then conducting coupling and laking.
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Inventors:
Naonori Takami
Kenichi Tanaka
Katsumi Kogusu
Toshitaka Terada
Kenichi Tanaka
Katsumi Kogusu
Toshitaka Terada
Application Number:
JP14783696A
Publication Date:
April 08, 2002
Filing Date:
May 20, 1996
Export Citation:
Assignee:
Dainichi Seika Kogyo Co., Ltd.
International Classes:
C09B63/00; C09B67/20; C09B67/22; C09D11/02; C09D11/033; C09D11/037; (IPC1-7): C09B63/00; C09B67/20; C09B67/22; C09D11/02
Domestic Patent References:
JP9302254A | ||||
JP9302253A | ||||
JP9111142A | ||||
JP7179780A | ||||
JP7278459A | ||||
JP6509370A |
Attorney, Agent or Firm:
Katsuhiro Yoshida (1 person outside)