Radiation curable polyurethane resin for ink jet ink
AssigneeAgfa NV
InventorsHubertus Van Aert, Ellen Bertels, Johan Loccufier, Sara Matheussen
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Abstract
A radiation curable polyurethane resin includes an ionic group, a polyalkylene oxide in a side chain thereof, and a (meth)acrylate or (meth)acrylamide having a hydroxyl functional group. The polyurethane resin is obtainable by reacting a polyester polyol, a polyether diol, a polyol containing an ionic group, a (meth)acrylate or (meth)acrylamide having a hydroxyl functional group, and a polyisocyanate. The polyester polyol is obtained by reacting a polycarboxylic acid and a polyol. The radiation curable polyurethane resin can be used as binder in an aqueous ink jet ink.
Claims19
A radiation curable polyurethane resin comprising:
- an ionic group;
- and
- a polyalkylene oxide in a side chain thereof;
- wherein
- the radiation curable polyurethane resin is obtainable by reacting a polyester polyol, a polyether diol, a polyol including an ionic group or a tertiary amino group, a polyisocyanate, and a (meth)acrylate including a hydroxyl functional group or a (meth)acrylamide including a hydroxyl functional group;
- and
- the polyester polyol is obtained by reacting an aromatic polycarboxylic acid and a polyol.
Dependencies are inferred from the claim text.