Printing ink
AssigneeSericol Limited
InventorsJeremy Ward, Nigel Gould
Life of this patent
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Abstract
This invention relates to an ink-jet ink comprising at least one monofunctional (meth)acrylate monomer; at least one monofunctional N-vinyl amide monomer; at least one radical photoinitiator; and at least one coloring agent. The ink has a viscosity of less than 100 mPas at 25° C., and the molar ratio of the at least one monofunctional (meth)acrylate monomer to the at least one monofunctional N-vinyl amide monomer is from 1.0 to 6.0.
Claims15
An ink-jet ink substantially free of water and volatile organic solvents comprising at least one monofunctional (meth)acrylate monomer, wherein said at least one monofunctional (meth)acrylate monomer comprises phenoxyethyl acrylate;
- at least one monofunctional N-vinyl amide monomer, wherein said at least one monofunctional N-vinyl amide monomer comprises N-vinyl caprolactam;
- at least one radical photoinitiator;
- and at least one colouring agent;
- wherein the ink has a viscosity of less than 100 mPas at 25° C., and wherein the molar ratio of the at least one monofunctional (meth)acrylate monomer to the at least one monofunctional N-vinyl amide monomer is from 1.2 to 4.0, and further wherein said ink-jet ink has a higher cure speed than a cure speed of an ink-jet ink which comprises only one of the at least one monofunctional (meth)acrylate monomer and the at least one monofunctional N-vinyl amide monomer.
Dependencies are inferred from the claim text.