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:
Jul. 21, 1998
Filed:
Dec. 04, 1996
Nippon Oil Co., Ltd., Tokyo, JP;
Abstract
A method for producing a black pigment including the step of contacting a polymer (1) containing 5 to 500 mmol of hydroxyl groups, and optionally 30 to 300 mmol of carboxyl groups per 100 g of the polymer with a carbon material (2) at a temperature of 50 to 250.degree. C. The obtained black pigment can be dispersed in a dispersion media at a high density, can be used for producing a black-hued ink, a black-hued electrodeposition coating material, a thermosetting black-hued coating material, a photocuring black-hued coating material, and a photocuring black-hued electrodeposition coating material, and is useful as a material for a black matrix of a color filter or a counterelectrode substrate for black and white display TFT array substrate.