Title:
PERYLENE-BASED BLACK PIGMENT FINE PARTICLES, METHOD FOR PRODUCING SAME, BLACK PIGMENT COMPOSITION CONTAINING SAME, AND METHOD FOR PRODUCING PERYLENE-BASED BLACK PIGMENT FINE PARTICLES HAVING CONTROLLED HUE AND/OR SATURATION
Document Type and Number:
WIPO Patent Application WO/2020/230293
Kind Code:
A1
Abstract:
The present invention is a method for producing perylene-based black pigment fine particles, which comprises a step for producing perylene-based black pigment fine particles by mixing a pigment solution, in which amorphous perylene-based black pigment fine particles having an average circularity of 0.8 or more and a perylene-based black pigment are dissolved, with a precipitation solvent for having the perylene-based black pigment fine particles precipitate from the pigment solution, wherein at least one of the pigment solution and the precipitation solvent independently contains an alkaline earth metal salt and/or a particle growth inhibitor. The present invention is able to provide: perylene-based black pigment fine particles which have good dispersibility, high concealability and high light blocking properties, while having controlled hue and saturation; a method by which the perylene-based black pigment fine particles are easily produced; and the like.
Inventors:
ENOMURA MASAKAZU (JP)
TAKEDA KAZUTAKA (JP)
TAKEDA KAZUTAKA (JP)
Application Number:
PCT/JP2019/019317
Publication Date:
November 19, 2020
Filing Date:
May 15, 2019
Export Citation:
Assignee:
M TECHNIQUE CO LTD (JP)
International Classes:
C09B3/14; C09B3/18; C09B67/20
Domestic Patent References:
| WO2009008388A1 | 2009-01-15 |
Foreign References:
| JP2012068613A | 2012-04-05 | |||
| JP2007522297A | 2007-08-09 | |||
| JP2003504480A | 2003-02-04 | |||
| JP2009221266A | 2009-10-01 | |||
| JP2003041144A | 2003-02-13 | |||
| JP2012068613A | 2012-04-05 | |||
| JPH10219167A | 1998-08-18 | |||
| JP2012212051A | 2012-11-01 | |||
| JP2007522297A | 2007-08-09 | |||
| JP2010189661A | 2010-09-02 |
Other References:
MIZUGUCHI, JIN: "Color generation mechanism of black perylene (P.bl.31)", JOURNAL OF THE JAPAN SOCIETY OF COLOUR MATERIAL, vol. 73, no. 1, 2000, pages 28 - 34, XP055759982
See also references of EP 3971246A4
See also references of EP 3971246A4
Attorney, Agent or Firm:
SAKAMOTO & PARTNERS (JP)
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