Flexible, scratch resistant radiation curable inkjet inks
AssigneeAgfa Graphics NV
InventorIvan Hoogmartens
Life of this patent
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Abstract
A free radical radiation curable inkjet ink containing a photoinitiator and polymerizable compounds includes a) no more than 15 wt % of one or more monofunctional acrylates wherein the homopolymer thereof has a Tg smaller than 20° C.; and b) at least 45 wt % of a mixture of monomers consisting of b1) 10 to 45 wt % of a N-vinyl lactam and/or a vinylether acrylate; and b2) 10 to 45 wt % of an ethoxylated and/or propoxylated polyacrylate having a molecular weight of at least 450; wherein all wt % are based on the total weight of the inkjet ink; and wherein the Tg is determined by the DSC method in ISO 11357-2:1999.
Claims23
A free radical radiation curable inkjet ink comprising:
- a photoinitiator;
- and
- polymerizable compounds including:
- a) no more than 15 wt % of one or more monofunctional acrylates wherein a homopolymer thereof has a Tg smaller than 20° C.;
- and
- b) at least 45 wt % of a mixture of monomers consisting of:
- b1) 10 to 45 wt % of a N-vinyl lactam and/or a vinylether acrylate;
- and
- b2) 10 to 45 wt % of an ethoxylated and/or propoxylated polyacrylate having a molecular weight of at least 450;
- wherein
- all wt % are based on a total weight of the free radical radiation curable inkjet ink;
- and
- the Tg is determined by the DSC method in ISO 11357-2:1999.
Dependencies are inferred from the claim text.