RADIATION CURABLE POLYURETHANE-BASED BINDER DISPERSION
First Claim
1. A radiation curable polyurethane-based binder dispersion, comprising:
- water; and
a radiation curable polyurethane dispersed in the water, the polyurethane having been formed from;
a polyisocyanate;
a polyol having a chain with two hydroxyl functional groups at one end of the chain and no hydroxyl groups at an opposed end of the chain, and having a number average molecular weight ranging from about 500 to about 5,000;
an acrylate or methacrylate, the acrylate or methacrylate having at least one hydroxyl functional group and having an acrylate functional group or a methacrylate functional group;
an alcohol or a diol or an amine having a number average molecular weight less than 600; and
a sulfonate or sulfonic acid having one or two amino functional groups.
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Accused Products
Abstract
A radiation curable polyurethane-based binder dispersion includes water and a radiation curable polyurethane dispersed in the water. The polyurethane is formed from: a polyisocyanate; a polyol having a chain with two hydroxyl functional groups at one end of the chain and no hydroxyl groups at an opposed end of the chain, and having a number average molecular weight ranging from about 500 to about 5,000; an acrylate or methacrylate, the acrylate or methacrylate having at least one hydroxyl functional group and having an acrylate functional group or a methacrylate functional group; an alcohol or a diol or an amine having a number average molecular weight less than 600; and a sulfonate or sulfonic acid having one or two amino functional groups.
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Citations
15 Claims
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1. A radiation curable polyurethane-based binder dispersion, comprising:
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water; and a radiation curable polyurethane dispersed in the water, the polyurethane having been formed from; a polyisocyanate; a polyol having a chain with two hydroxyl functional groups at one end of the chain and no hydroxyl groups at an opposed end of the chain, and having a number average molecular weight ranging from about 500 to about 5,000; an acrylate or methacrylate, the acrylate or methacrylate having at least one hydroxyl functional group and having an acrylate functional group or a methacrylate functional group; an alcohol or a diol or an amine having a number average molecular weight less than 600; and a sulfonate or sulfonic acid having one or two amino functional groups. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An inkjet ink, comprising:
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water; a colorant; a co-solvent; a surfactant; and a radiation curable polyurethane binder, the radiation curable polyurethane binder having been formed from; a polyisocyanate; a polyol having a chain with two hydroxyl functional groups at one end of the chain and no hydroxyl groups at an opposed end of the chain and having a number average molecular weight ranging from about 500 to about 5,000; an acrylate or methacrylate, the acrylate or methacrylate having at least one hydroxyl functional group and having an acrylate functional group or a methacrylate functional group; an alcohol or a diol or an amine having a number average molecular weight less than 600; and a sulfonate or sulfonic acid having one or two amino functional groups. - View Dependent Claims (13, 14)
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15. An inkjet ink set, comprising:
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a pre-treatment fixing fluid, including; calcium propionate present in an amount ranging from greater than 4.5 to about 8.0 wt % based on a total wt % of the pre-treatment fixing fluid; calcium pantothenate present in an amount ranging from about 2.0 wt % to equal to or less than 15 wt % based on the total wt % of the pre-treatment fixing fluid; tetraethylene glycol; a surfactant; an acid present in an amount sufficient to render a pH of the pre-treatment fixing fluid from about 4.0 to about 7.0; and a balance of water; and an inkjet ink, including; water; a colorant; a co-solvent; a surfactant; and a radiation curable polyurethane binder, the radiation curable polyurethane binder having been formed from; a polyisocyanate; a polyol having a chain with two hydroxyl functional groups at one end of the chain and no hydroxyl groups at an opposed end of the chain and having a number average molecular weight ranging from about 500 to about 5,000; an acrylate or methacrylate, the acrylate or methacrylate having at least one hydroxyl functional group and having an acrylate functional group or a methacrylate functional group; an alcohol or a diol or an amine having a number average molecular weight less than 600; a sulfonate or sulfonic acid having one or two amino functional groups; and
one of;i) a carboxylic acid having two or more hydroxyl functional groups;
orii) a homopolymer or copolymer of poly(ethylene glycol) having one or two hydroxyl functional groups or one or two amino functional groups at one end of its chain;
oriii) a combination of i and ii.
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Specification