Energy curable inks and methods of preparing same
AssigneeSun Chemical Corporation
InventorsEdward Stone, Gordon Kotora, Neil Young
Life of this patent
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Abstract
An energy curable printing ink composition containing a branched polyester comprising monofunctional and difunctional components having an excess functionality of about 0.1 to 0.20. Also described is a method of reducing misting and/or dot gain in an energy curable printing ink composition by adding such branched polyesters to the composition.
Claims17
An improved actinic radiation curable printing ink composition consisting essentially of:
- an actinic radiation curable monomer;
- a photo initiator;
- a pigment;
- a grind vehicle;
- and
- a polyester, whereby the improvement comprises:
- using a branched polyester containing monofunctional and multifunctional components and having an excess functionality of about 0.10 to 0.18.
An improved actinic radiation curable varnish consisting essentially of:
- an actinic radiation curable monomer;
- and
- a polyester, whereby the improvement comprises:
- using a branched polyester containing monofunctional and multifunctional components and having an excess functionality of about 0.10 to 0.18.
An improved method of reducing misting and/or dot gain in an actinic radiation curable printing composition consisting essentially of an actinic radiation curable monomer, a pigment, a grind vehicle, and a photoiniator and adding to said composition a polyester, whereby the improvement comprises:
- using a branched polyester containing monofunctional and multifunctional components and having an excess functionality of about 0.10 to 0.18.
Dependencies are inferred from the claim text.