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US 10,864,753 B2Granted
Electron beam curable inkjet formulations with improved chemical resistance
AssigneeSun Chemical Corporation
InventorsStephen Anthony Hall, Derek Ronald Illsley
Life of this patent
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Abstract
The present invention is directed to a method for printing energy curable ink and coating compositions comprising high amounts of monofunctional monomers that exhibit both good adhesion to plastic substrates, and good solvent resistance. The method of the present invention employs electron beam curing of the ink and coating compositions, at accelerating voltages greater than or equal to 70 keV, and electron beam doses greater than or equal to 30 kGy, and preferably greater than or equal to 40 kGy.
Claims19
A method for printing an energy curable ink or coating composition comprising:
- a) providing an energy curable ink or coating composition, wherein the ink or coating composition comprises:
- i) greater than or equal to 20% (w/w) one or more monofunctional ethylenically unsaturated monomers or oligomers, based on the total weight of the ink or coating composition;
- ii) less than or equal to 50% (w/w) one or more multifunctional ethylenically unsaturated monomers or oligomers, based on the total weight of the ink or coating composition;
- iii) 0% to 5% (w/w) one or more solvents, based on the total weight of the ink or coating composition;
- iv) 0% to 5% (w/w) one or more photoinitiators, based on the total weight of the ink or coating composition;
- v) 0% to 7% (w/w) one or more organic pigments or dyes, based on the total weight of the ink or coating composition;
- and
- vi) 0% to 40% (w/w), one or more inorganic pigments, based on the total weight of the ink or coating composition;
- b) applying the ink or coating composition of step a) to a substrate;
- and
- c) curing the applied ink or coating composition by exposure to electron beam radiation with an electron beam emitter, wherein:
- i) the accelerating voltage of the electron beam emitter is equal to or greater than 70 keV;
- ii) cure dose is equal to or greater than 50 kGy.
10 more elements
Dependencies are inferred from the claim text.