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US 2020/0369880 A1Published application
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.
Claims21
1-12. (canceled)
13:
- 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 a polycarboxylic acid and a polyol.
5 more elements
14:
- The radiation curable polyurethane resin according to claim 13, wherein the polycarboxylic acid is an aromatic polycarboxylic acid.
15:
- The radiation curable polyurethane resin according to claim 13, wherein the polycarboxylic acid is selected from the group consisting of phthalic acid, terephthalic acid, and isophthalic acid.
16:
- The radiation curable polyurethane resin according to claim 13, wherein the polyether diol is a compound according to Formula 1:
- wherein
- R1 is methyl or ethyl;
- R2 is H or C1-C4 alkyl;
- and
- n represents an integer from 5 to 50.
3 more elements
17:
- The radiation curable polyurethane resin according to claim 15, wherein the polyether diol is a compound according to Formula 1:
- wherein
- R1 is methyl or ethyl;
- R2 is H or C1-C4 alkyl;
- and
- n represents an integer from 5 to 50.
3 more elements
18:
- The radiation curable polyurethane resin according to claim 13, wherein the (meth)acrylate is an acrylate including at least two hydroxyl functional groups.
19:
- The radiation curable polyurethane resin according to claim 15, wherein the (meth)acrylate is an acrylate including at least two hydroxyl functional groups.
20:
- The radiation curable polyurethane resin according to claim 13, wherein the ionic group of the polyol is an anionic group.
21:
- The radiation curable polyurethane resin according to claim 15, wherein the ionic group of the polyol is an anionic group.
22:
- The radiation curable polyurethane resin according to claim 13, wherein the ionic group of the polyol is a cationic group.
23:
- The radiation curable polyurethane resin according to claim 15, wherein the ionic group of the polyol is a cationic group.
24:
- An aqueous radiation curable ink jet ink comprising:
- a water soluble organic solvent;
- and
- the radiation curable polyurethane resin according to claim 13.
1 more element
25:
- An aqueous radiation curable ink jet ink comprising:
- a water soluble organic solvent;
- and
- the radiation curable polyurethane resin according to claim 15.
1 more element
26:
- An aqueous radiation curable ink jet ink comprising:
- a water soluble organic solvent;
- and
- the radiation curable polyurethane resin according to claim 16.
1 more element
27:
- The aqueous radiation curable ink jet ink according to claim 24, further comprising a pigment.
28:
- The aqueous radiation curable ink jet ink according to claim 25, further comprising a pigment.
29:
- The aqueous radiation curable ink jet ink according to claim 24, further comprising a photoinitiator.
30:
- The aqueous radiation curable ink jet ink according to claim 25, further comprising a photoinitiator.
31:
- An aqueous treatment liquid for inkjet printing comprising:
- the radiation curable polyurethane resin according to claim 13.
32:
- An inkjet recording method comprising:
- providing a substrate;
- jetting onto the substrate an aqueous radiation curable ink jet ink according to claim 24;
- and
- curing the aqueous radiation curable ink jet ink jetted onto the substrate with radiation.
2 more elements