US 10,501,648 B2Granted

Radiation-curable inkjet inks and coatings

AssigneeSun Chemical Corporation

InventorsDerek Illsley, Damian Ward, Stephen Hall

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Abstract

The present invention provides radiation-curable (UV-curable) inks and coatings for inkjet printing comprising an inert thermoplastic acrylic resin and multifunctional monomers. The inks and coatings can be applied in a single pass printing operation. Furthermore, the inks and coatings are suitable for the printing of food, pharmaceutical and other sensitive packaging materials, particularly of plastic materials. The acrylic polymer (or copolymer) preferably has a molecular weight of 10,000 g/mole, or less, and the ink comprises less than 5 wt % of any blend of monofunctional monomer. The inks and coatings of the invention are particularly suitable for curing by UV-LED radiation.

Claims16

Dependent claims

A radiation-curable inkjet ink or coating composition comprising:

a) one or more acrylic polymers in an amount of greater than 10 wt % based on a total weight of the ink or coating;
and
b) one or more multifunctional monomers having two or more polymerizable groups per molecule;
wherein at least one multifunctional monomer is a hybrid monomer containing two or more different polymerizable groups per molecule;
wherein the radiation-curable inkjet ink or coating composition is non-aqueous;
wherein the composition contains greater than or equal to 40 wt % of polymerizable monomers, based on the total weight of the ink or coating;
wherein the composition contains one or more photoinitiators selected from the group consisting of thioxanthones, phosphine oxide compounds, alpha-hydroxy ketones, benzophenones, aminobenzoates, alpha-aminoalkylphenones, benzoin ethers and benzyl ketals, wherein at least one photoinitiator is a phosphine oxide;
and
wherein a concentration of any blend of phosphine oxide photoinitiators is less than 1.0 wt % based on the total weight of the ink or coating composition.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/324,037Filed 8 Jul 2015 · us provisional application
Priority: 11 Jul 2014
Published: US 2017/0204282 A120 Jul 2017
Granted: 10 Dec 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

C09D 11/101
Based on artificial resins: inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with…
B41J 2/435
Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed: characterised by…
C08F 283/008
On to polymers provided for in C08G18/00: on to unsaturated polymers
C09D 4/06
Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable…:…

Family

Application62/023,247Us provisional application · filed 11 Jul 2014
US 2017/0204282 A1Pre-grant publication · published 20 Jul 2017
US 10,501,648 B2This patent

From the US filing history. Foreign family members aren’t listed.

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