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:
Mar. 14, 2000
Filed:
Jul. 01, 1998
Applicant:
Inventors:
Koji Iwase, Osaka, JP;
Hideki Kinoshita, Osaka, JP;
Teruhisa Sato, Osaka, JP;
Hiroyuki Ishikawa, Osaka, JP;
Assignee:
Sakata Inx Corp., Osaka-fu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
524596 ; 523161 ;
Abstract
A pigment dispersion is disclosed which comprises a pigment dispersant, a nonaqueous solvent and optionally a binder resin, wherein the pigment dispersion comprises as the pigment dispersion at least 0.2 parts by weight of a modified novolak resin (A) relative to 100 parts weight of the pigment, the modified novolak resin (A) having an aromatic ring and a ring structure given by ring opening of an epoxy group by a carboxyl group of a hydroxycarboxylic acid or a derivative thereof. An ink composition for offset printing containing the pigment dispersion is also disclosed.