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:
Oct. 05, 1999
Filed:
Dec. 01, 1997
Hiroaki Saikatsu, Tokyo, JP;
Hisao Okamoto, Tokyo, JP;
Mitsuo Yamazaki, Tokyo, JP;
Shigeru Sakamoto, Tokyo, JP;
Shiro Yamamiya, Tokyo, JP;
Yoshio Abe, Tokyo, JP;
Michiei Nakamura, Tokyo, JP;
Dainichiseika Color & Chemicals Mfg. Co., Ltd., Tokyo, JP;
Abstract
Disclosed is a pigment dispersant represented by the following formula (1): ##STR1## wherein X represents a hydrogen atom or an acylamino group; Y represents a specific aromatic group; Z represents a specific aromatic group or a C.sub.2-30 aliphatic, alicyclic or hetero-alicyclic amine reaction residual group having at least one amino group; G represents a reaction residual group of at least one compound selected from C.sub.2-30 aliphatic, alicyclic and hetero-alicyclic hydrocarbons each of which has at least one amino group; n is an integer of from 0 to 3; and when N stands for O, Z represents a reaction residual group of a C.sub.2-30 aliphatic, alicyclic or hetero-alicyclic polyamine having at least two amino groups. A pigment dispersion making use of the dispersant and a color filter produced from the pigment dispersion are also disclosed.