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

Inactive Publication Date: 2005-11-24
ASHLAND LICENSING & INTPROP LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012] The multi-functional polyacrylate oligomers, from which the varnishes of the present invention are formulated, have dual chemical functionality. That is, they have both acrylic functionality and a labile ketone group that is capable of dissociating to initiate free radical polymerization of the oligomer upon exposure to UV radiation. Final OPV properties can be modified in a number of ways including use of additional or supplementary acrylate materials, using any number of different β-dicarbonyl com

Problems solved by technology

Systems comprised of traditional monomers and oligomers often have compatibilit

Method used

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  • Radiation-curable high gloss overprint varnish compositions
  • Radiation-curable high gloss overprint varnish compositions

Examples

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example 1

OPV Formulation Based on FlexCure Resins

[0053] The final formulation (OPV-062503-01) is comprised of FlexCure resins and commercial raw materials, in parts by weight, as specified in Table 1A:

TABLE 1AFormulation (components in parts by weight).Raw MaterialDescriptionParts (w / w)7001-152Ashland self-initiating resin68.0TMPTAreactive diluent28.0Benzophenonephotoinitiator1.0MDEAamine synergist0.4HCPKphotoinitiator0.6TegoRad 2300siloxane-based flow agent2.0100.0

example 2

OPV Formulation Based on FlexCure Resins

[0054] The final formulation (OPV-102003-02) is comprised of FlexCure resins and commercial raw materials, in parts by weight, as specified in Table 2A:

TABLE 2AFormulation (components in parts by weight).Raw MaterialDescriptionParts (w / w)FlexCure Resin OPV120Ashland self-initiating resin60.0TMPTAreactive diluent36.0Benzophenonephotoinitiator1.0MDEAamine synergist0.4HCPKphotoinitiator0.6TegoRad 2300siloxane based flow agent2.0100.0

example 3

OPV Formulation Based on FlexCure Resins

[0055] The final formulation (OPV-070903-02) is comprised of FlexCure resins and commercial raw materials, in parts by weight, as specified in Table 3A:

TABLE 3AFormulation (components in parts by weight).Raw MaterialDescriptionParts (w / w)FlexCure OPV130Ashland self-initiating resin67.0TMPTAreactive diluent28.0Benzophenonephotoinitiator1.5MDEAamine synergist0.6HCPKphotoinitiator0.9TegoRad 2300siloxane based flow agent2.0100.0

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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.

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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Application Information

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IPC IPC(8): C08F265/04C08F265/06C08F283/01C08F289/00C08F290/06C08G2/00C08G18/32C08G18/67C08L33/08C09D133/08C09D151/00C09D151/08C09D175/16
CPCC08F265/04C08F265/06C09D175/16C09D151/08C09D151/003C09D133/08C08L33/08C08F283/01C08F289/00C08F290/06C08F290/061C08G18/3215C08G18/672C08L2666/04C08L2666/02Y10T428/31855C08G2/00C09D5/00
Inventor NARAYAN-SARATHY, SRIDEVIGOULD, MICHAEL L.
Owner ASHLAND LICENSING & INTPROP LLC
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