Aqueous polyurethane resin dispersion
AssigneeAgfa NV
InventorsHubertus Van Aert, Marie Lehericey
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Abstract
An aqueous polyurethane resin dispersion, the polyurethane resin is obtainable by reacting an allophanate based isocyanate according to general formula I or II, optionally a polyether diol, a polyol containing a quaternary N-atom or tertiary amino group and a polyol selected from the group consisting of polyester polyol, polyether polyol, polycarbonate polyol, a polyacrylate polyol, a polyolefin and a polyamide polyol. The polyurethane resin is suitable as a resin in treatment liquids of substrates and images made by inkjet printing.
Claims19
An aqueous polyurethane resin dispersion, wherein the polyurethane resin is obtainable by reacting a polyether diol, a polyol containing a quaternary N-atom or tertiary amino group, a polyol selected from the group consisting of polyester polyol, polycarbonate polyol, a polyacrylate polyol, a polyolefin, and a polyamide polyol, and an allophanate-based isocyanate of formula I or formula II:
- wherein
- D, D1, and D2 are each independently of formula III, IV or V:
- R is a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, a substituted or unsubstituted cycloaliphatic group, a substituted or unsubstituted alkylaryl group, or a substituted or unsubstituted aryl or heteroaryl group.
Dependencies are inferred from the claim text.