The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 19, 2025
Filed:
Nov. 17, 2020
Applicant:
Sekisui Chemical Co., Ltd., Osaka, JP;
Inventors:
Assignee:
SEKISUI CHEMICAL CO., LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 232/08 (2006.01); C08F 234/00 (2006.01); C09D 5/03 (2006.01); C09D 201/02 (2006.01); C09D 201/06 (2006.01);
U.S. Cl.
CPC ...
C08F 232/08 (2013.01); C08F 234/00 (2013.01); C09D 5/032 (2013.01); C09D 201/025 (2013.01); C09D 201/06 (2013.01);
Abstract
The present invention provides black particles that have high electrical insulation and that can achieve high blackness in the visible light region, as well as a black coating material, a coating film, and a black matrix for a color filter each containing the black particles. Provided are black particles containing a copolymer including a structural unit derived from a pyrrole compound and a structural unit derived from a quinone compound, the black particles having an aqueous dispersion number average particle size of 100 nm or less and a zeta potential of −5 mV or less.