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US 11,802,205 B2Granted
Aqueous polyurethane resin dispersion
AssigneeAgfa NV
InventorsHubertus Van Aert, Ellen Bertels
Life of this patent
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Abstract
An aqueous polyurethane resin dispersion includes a cationic group and a polyalkylene oxide in a side chain thereof. The polyurethane resin is obtainable by reacting a polyester polyol, a polyether diol, a polyol containing a quaternary N-atom or tertiary amino group, and a polyisocyanate. The polyester polyol is obtained by reacting an aromatic polycarboxylic acid and a polyol. The polyurethane resin is suitable as a resin in treatment liquids of substrates and images made by inkjet printing.
Claims10
An aqueous polyurethane resin dispersion comprising:
- a polyurethane resin including a polyalkylene oxide in a side chain thereof, wherein
- the polyurethane resin is obtainable by reacting a polyester polyol, a polyether diol, a polyol including a quaternary N-atom or a tertiary amino group, and a polyisocyanate;
- and
- the polyester polyol is obtained by reacting an aromatic polycarboxylic acid and a polyol, wherein the aromatic polycarboxylic acid is a copolymer of terephthalic acid with isophthalic acid or phthalic acid anhydride, the aromatic polycarboxylic acid having at least 20 mol % isophthalic acid or phthalic acid anhydride units.
1 more element
Dependencies are inferred from the claim text.