Energy curable gravure inks incorporating grafted pigments

US6727295B2 · kind B2 · utility

Assignee

• Sun Chemical Corporation · US

Inventors

• Mikhail Laksin · Scotch Plains, US
• Subhankar Chatterjee · Hampton, US
• Russell Schwartz · Parsippany, US
• Paul A. Merchak · Loveland, US
• Patrice M. Aurenty · Wood-Ridge, US
• Edward Stone · Morristown, US
• Gordon Kotora · Clifton, US

Key dates

• Filing date: Feb 27, 2001
• Grant date: Apr 27, 2004
• Expiry date: Feb 27, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S522/909
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Solvent-free, energy curable low viscosity gravure and non-conductive ink jet inks which contain a pigment; a rheological additive having the structure P—(U—Y)s, wherein P is the residue of an organic pigment or dye, Y is a polyalkylene oxide moiety, U is a linking moiety covalently bonding Y to P and s is an integer from 1 to 3; and an energy curable liquid vehicle which may be a cationic, thermal cationic or a free radical initiated polymerization system, cured by actinic radiation; and optionally containing a photoinitiating system.