Radiation-curable high gloss overprint varnish compositions

a technology of overprint varnish and composition, which is applied in the field of radiation curable overprint varnish, can solve the problems of less formulating options, and achieve the effects of less shrinkage, improved adhesion, and softer and flexibl
US20050261391A1Inactive Publication Date: 2005-11-24ASHLAND LICENSING & INTPROP LLC
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Patent Information

Authority / Receiving Office
US ¡ United States
Current Assignee / Owner
ASHLAND LICENSING & INTPROP LLC
Publication Date
2005-11-24
Estimated Expiration
Not applicable ¡ inactive patent

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Abstract

The present invention relates to radiation-curable overprint varnishes for printed substrates based on multifunctional, uncrosslinked, liquid Michael addition resins. The compositions are UV-curable with little or no photoinitiator present.
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Description

CROSS REFERENCE TO RELATED APPLICATION

[0001] This application is a continuation-in-part of the provisional application Ser. No. 60 / 564,025, filed Apr. 21, 2004.BACKGROUND OF THE INVENTION

[0002] The present invention relates to radiation curable overprint varnishes (OPV). The overprint varnishes are based on multifunctional, uncrosslinked, liquid Michael addition resins formed from the reaction of acrylate monomers, known as Michael addition reaction acceptors (hereinafter “Michael acceptors”) and β-ketoesters (e.g., ethyl acetoacetate), β-diketones (e.g., 2,4-pentanedione), and / or β-keto amides (e.g., acetoacetanilide, acetoacetamide), or other β-dicarbonyl compounds and mixtures thereof, known as Michael addition reaction donors (hereinafter “Michael donors”) that can participate in the Michael addition reaction. The OPV formulations based on the above multifunctional, uncrosslinked, liquid Michael addition resins can be cured under standard UV cure conditions with no photoinitia...

Claims

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