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:
Nov. 19, 1996
Filed:
Dec. 16, 1994
Applicant:
Inventors:
Ramasamy Krishnan, Colonia, NJ (US);
Marilyn C Yamat, Bogota, NJ (US);
Manuel Z Gregorio, Cincinnati, OH (US);
Russell J Schwartz, Cincinnati, OH (US);
Assignee:
Sun Chemical Corporation, , US;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09B / ;
U.S. Cl.
CPC ...
106402 ; 106493 ; 106496 ; 106 / ;
Abstract
A process for improving the color value of a pigment and for imparting stability to a water-based printing ink containing such pigment which comprises adding a polyester or polyether to the strike tank during the pigment conditioning step; the preferred polyether is methyl hydroxypropyl cellulose and the preferred polyester is benzoic acid-modified trimellitic anhydride polyester.