Sun Chemical Corporation

Joseph Malanga

Solomon J Nachfolger

Ralph H Reiter

Michael J Jurek

Hugo Babij

Walter J Glesias

The present invention describes a linear polyester resin comprising a di-epoxide monomer and a di-acid monomer useful in energy curable lithographic inks. The linear polyester resin exhibits a number average molecular weight less than 20,000. The present invention also describes an energy curable lithographic ink formulation including the linear polyester resin. The ink exhibits improved print density, print contrast, water window and rheological (total body) characteristics.

Linear polyester resins and improved lithographic inks

The invention relates to a water-based intaglio printing ink especially suited for the intaglio printing of security documents, such as postage stamps, stock certificates and the like, wherein the water-based intaglio printing ink having a) an epoxy resin ester reacted with an unsaturated monobasic acid and a reactive monomer, b) a glycol and/or glycol ether c) a pigment, d) a monoalkanolamine, e) a drier and f) water.

Water-based intaglio printing ink

The invention relates to a heatset intaglio printing ink especially suited for the intaglio printing of security documents such as currency, postage stamps, stock certificates, bank notes and the like. The ink comprises: a) an epoxy resin ester reacted with an unsaturated monobasic acid and a reactive monomer, b) a glycol and/or glycol ether, c) a pigment, d) a drier and e) a compound obtained by reacting an amine/epoxy adduct with a phenolic resin or polyhydric phenol compound.

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Clark, NJ, United States of America

Joseph Malanga