PIGMENT AND PRODUCTION METHOD THEREFOR - DAINIPPON INK & CHEMICALS

Title:

PIGMENT AND PRODUCTION METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2020/067140

Kind Code:

A1

Abstract:

Provided is a modified pigment obtained by changing a dye into a lake using an environmentally friendly method that does not use a metal, and having excellent color tone selectivity. The modified pigment according to the present invention is obtained by changing a dye having an acidic group and/or a basic group into a lake using at least one of amino acids or proteins.

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Inventors:

OOTSUBO TAKAHIKO (JP)
SEKINE HITOSHI (JP)
NEMOTO KOUJI (JP)
YAMAMOTO ATSUSHI (JP)
TOMINAGA KEN-ICHI (JP)
ASAKAWA MASUMI (JP)
SATO KAZUHIKO (JP)

Application Number:

PCT/JP2019/037551

Publication Date:

April 02, 2020

Filing Date:

September 25, 2019

Export Citation:

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Assignee:

DAINIPPON INK & CHEMICALS (JP)
AIST (JP)

International Classes:

C09B63/00; C09B67/20; C09D11/037

Domestic Patent References:

WO2002022743A1

2002-03-21

Foreign References:

JPS5759969A	1982-04-10
JPS5188519A	1976-08-03
JPS61183362A	1986-08-16
JP2013245241A	2013-12-09

Attorney, Agent or Firm:

TAKAOKA Ryoichi et al. (JP)

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