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Patent Searching and Data


Title:
PIGMENT COMPOSITION
Document Type and Number:
Japanese Patent JP2019099815
Kind Code:
A
Abstract:
To provide a pigment composition having reduced content of o-anisidine compared to conventional ones, and a manufacturing method capable of effectively removing o-anisidine when the pigment composition is manufactured.SOLUTION: There are provided a pigment composition containing an azo pigment which is a reaction product of a coupler and a base, and a pigment derivative and having content of o-anisidine derived from the coupler of 20 mg/kg or less in whole pigment composition, and a manufacturing method of the pigment composition including a process for adding a remover of o-anisidine derived from the coupler after the coupler and the base is reacted to product the azo pigment or when the coupler and the base are reacted.SELECTED DRAWING: None

Inventors:
SATO JUNICHIRO
NISHIKAWA TAKESHI
Application Number:
JP2018224012A
Publication Date:
June 24, 2019
Filing Date:
November 29, 2018
Export Citation:
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Assignee:
SANYO COLOR WORKS
International Classes:
C09B67/20; B41M5/00; C09B29/33; C09B62/04; C09D11/322; G03G9/09
Domestic Patent References:
JPH10288863A1998-10-27
JPH10288862A1998-10-27
JP2011032374A2011-02-17
JP2000327943A2000-11-28
Attorney, Agent or Firm:
Takao Yanagino
Yanano Yoshihide
Norio Morioka
Hisayoshi Sekiguchi
Masato Nakagawa