US 11,834,578 B2
Black perylene pigment microparticles, method of producing the same, black pigment composition comprising the same, and method of producing black perylene pigment microparticles having controlled hue and/or chroma
Masakazu Enomura, Izumi (JP); and Kazutaka Takeda, Izumi (JP)
Assigned to M. TECHNIQUE CO., LTD., Izumi (JP)
Appl. No. 17/606,926
Filed by M. TECHNIQUE CO., LTD., Izumi (JP)
PCT Filed May 15, 2019, PCT No. PCT/JP2019/019317
§ 371(c)(1), (2) Date Oct. 27, 2021,
PCT Pub. No. WO2020/230293, PCT Pub. Date Nov. 19, 2020.
Prior Publication US 2022/0235227 A1, Jul. 28, 2022
Int. Cl. C09B 3/18 (2006.01); C09B 67/54 (2006.01)
CPC C09B 3/18 (2013.01) [C09B 67/0096 (2013.01)] 10 Claims
OG exemplary drawing
 
1. Black perylene pigment microparticles having an average circularity of 0.8 or more which are amorphous.