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:
Jun. 04, 1991
Filed:
Dec. 01, 1989
Applicant:
Inventor:
Everett Crews, Charleston, SC (US);
Assignee:
Westvaco Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; C09F / ; C08L / ;
U.S. Cl.
CPC ...
528129 ; 525390 ; 525396 ; 523160 ; 523161 ; 527603 ;
Abstract
Improved polyol esters of phenol-rosin condensates and polyimide/polyamide derivatives thereof and their method of manufacture are disclosed as well as their applications as varnishes for lithographic inks and in pigment dispersion (flushing). Advantages of ink varnishes comprising these derivatives include higher water yields, increased gloss, transparency, and color strength, as well as reduced bronzing in both pigment concentrates and finished lithographic inks.