Multi-functional polyurethane coatings
AssigneeHewlett-Packard Development Company, L.P.
InventorsZhang-Lin ZHOU, Xiaoqi ZHOU
Life of this patent
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Abstract
A multi-functional polyurethane coating composition can include water and polyurethane particles including a blend of polyurethane polymers with polyurethane backbones. The polyurethane particles can include multiple pendant groups independently attached to one or multiple polyurethane backbones within the blend of polyurethane polymers. The multiple pendant groups of the polyurethane particles include polyalkylene oxides, aliphatic phosphonium salts, and epoxides.
Claims15
A multi-functional polyurethane coating composition, comprising:
- water;
- and
- polyurethane particles including a blend of polyurethane polymers with polyurethane backbones, wherein the polyurethane particles include multiple pendant groups independently attached to one or multiple polyurethane backbones within the blend of polyurethane polymers, wherein the multiple pendant groups of the polyurethane particles include polyalkylene oxides, aliphatic phosphonium salts, and epoxides.
A coated print medium, comprising:
- a print media substrate;
- and
- an ink-receiving layer on the print media substrate, the ink-receiving layer comprising polyurethane particles including a blend of polyurethane polymers with polyurethane backbones, wherein the polyurethane particles includes multiple pendant groups independently attached to one or multiple polyurethane backbones within the blend of polyurethane polymers, wherein the multiple pendant groups of the polyurethane particles include polyalkylene oxides, aliphatic phosphonium salts, and epoxides.
A method of making a coated print medium, comprising:
- applying a multi-functional polyurethane coating composition as a layer to a print media substrate, the multi-functional polyurethane coating composition including:
- water, and
- polyurethane particles including a blend of polyurethane polymers with polyurethane backbones, wherein the polyurethane particles include multiple pendant groups independently attached to one or multiple polyurethane backbones within the blend of polyurethane polymers, wherein the multiple pendant groups of the polyurethane particles include polyalkylene oxides, aliphatic phosphonium salts, and epoxides;
- and
- drying the multi-functional polyurethane coating composition to remove water therefrom on the print media substrate to leave an ink-receiving layer thereon.
Dependencies are inferred from the claim text.