Abstract: Inkjet inks are described herein. In an example, an inkjet ink can comprise: at least one colorant; at least one solvent comprising glycerol in an amount of from about 1 wt % to about 20 wt % based on the total weight of the inkjet ink; water; and at least one binder, wherein the binder comprises a polyurethane-based binder dispersion.

Abstract: Yellow inkjet inks are disclosed. In an example, an inkjet ink composition comprises: at least one colorant comprising at least one yellow pigment; at least one solvent comprising at least one triol; water; and at least one binder. The binder comprises a polyurethane-based binder dispersion, which comprises water and a polyurethane. The polyurethane comprises: (A) a polyisocyanate, (B) a first 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, (C) a second polyol having a chain with two hydroxyl functional groups at both ends of the chain, (D) a carboxylic acid functional group with two hydroxyl functional groups, and (E) a sulfonate or sulfonic acid functional group having two amino functional groups.

Abstract: The present disclosure refers to an inkjet ink set comprising a black ink with a black pigment, a yellow ink with a yellow pigment, a cyan ink with a cyan pigment and a magenta ink with a magenta pigment, wherein at least one of the ink further contains a polyurethane binder; non-ionic surfactants; humectant solvent; non-volatile glycol ether co-solvent; a polyethylene wax emulsion and a balance of water. The inkjet ink set can also comprise an orange ink, a green ink and/or a violet ink. The present disclosure refers also to a system for printing the ink set described herein.

Abstract: An inkjet ink composition comprising a polyurethane-based binder dispersion is described. The polyurethane-based binder dispersion comprises: a polyurethane, which comprises: (A) a polyisocyanate; (B) a first 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; (C) a second polyol having a chain with two hydroxyl functional groups at both ends of the chain; (D) a carboxylic acid functional group with two hydroxyl functional groups; and (E) a compound shown in formula (1): m(M+)n(X)—R—Y— (1), wherein m is 0 or 1, M is a metal, n is 2 to 10, X is an amino group, R is a C1 to C18 alkyl group, a C6 to C30 aromatic compound or a C4 to C20 aliphatic cyclic compound, and Y is SO3- or SO3H, with the proviso that when m is 0, Y is SO3H and when m is 1, Y is SO3-.

Abstract: An example of a radiation curable binder dispersion includes water and a radiation curable binder dispersed therein. The radiation curable polyurethane is formed from a polyisocyanate; an acrylate or methacrylate having at least two hydroxyl functional groups and having an acrylate functional group or a methacrylate functional group; another acrylate or methacrylate having one hydroxyl functional group or one amino functional group; and one of i) 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; or ii) a combination of i and a compound including a carboxylic functional group.

Abstract: An example of a radiation curable binder dispersion for an inkjet ink includes water and a radiation curable polyurethane dispersed in the water. The radiation curable polyurethane has a weight average molecular weight that is equal to or less than 5,000, a glass transition temperature (Tg) less than 25° C., and a double bond density higher than 4.0. The radiation curable polyurethane binder dispersion is formed from a non-aromatic diisocyanate; a polyol; an acrylate or methacrylate, the acrylate or methacrylate having at least two hydroxyl functional groups and having an acrylate functional group or a methacrylate functional group; a compound including i) an ionic group or ii) a group to form an ionic group; and another acrylate or methacrylate, the other acrylate or methacrylate having a hydroxyl functional group or an amino functional group.

Abstract: A hydrophilic pigment dispersant for an inkjet ink includes water and a hydrophilic polyurethane having a weight average molecular weight from 3,000 to 15,000, and an acid number ranging from 50 to 100. The polyurethane is formed from 25 wt % to 70 wt % of a non-aromatic polyisocyanate; 0 wt % to 60 wt % of a polyol having a weight average molecular weight from 500 to 5,000; 0 wt % to 30 wt % of an aromatic diol having a weight average molecular weight ranging from 100 to 1000; 5 wt % to 25 wt % of an acid monomer having a hydroxyl functional group, an amino functional group, or both hydroxyl and amino functional groups; and 0 wt % to 5 wt % of a polyethyleneoxide compound having a hydroxyl functional group, an amino functional group, or both hydroxyl and amino functional groups; wherein at least one of the polyol or the aromatic diol is present.

Abstract: An example of an ultraviolet (UV) curable inkjet ink composition includes a pigment dispersed by an anionic polymeric dispersant, an organic co-solvent, polyvinylpyrrolidone, a photoinitiator, a UV radiation curable polyurethane, and a balance of water. The polyvinylpyrrolidone has a number average molecular weight ranging from about 10,000 to about 40,000.

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.

Abstract: A binder dispersion includes water and polyurethane. The polyurethane is formed from polyisocyanate; polyol having two hydroxyl (OH) groups at one chain end, no OH groups at an opposed chain end, and a number average molecular weight (Mn) ranging from ˜500-˜5,000; an alcohol, diol or amine having a Mn<500; and one of i) a carboxylic acid; ii) a sulfonate or sulfonic acid having one amino group; iii) i and ii; iv) i and a homopolymer or copolymer of poly(ethylene glycol) (PEG) having one or two OH or amino groups at one chain end; v) ii and a homopolymer or copolymer of PEG having one or two OH or amino groups at one chain end; or vi) i, ii, and a homopolymer or copolymer of PEG having one or two OH or amino groups at one chain end.

Abstract: The present invention is generally directed to treated silica particulates for use in ink-jet media coatings, comprising silica particulates being surface-activated by a surface activating agent; the surface active agent including an aluminum chloride hydrate, and where the silica particulates are also reagent-modified by an organosilane reagent; the organosilane reagent including an amine-containing silane.

Abstract: A binder dispersion includes water and polyurethane. The polyurethane is formed from polyisocyanate; polyol having two hydroxyl (OH) groups at one chain end, no OH groups at an opposed chain end, and a number average molecular weight (Mn) ranging from ˜500-˜5,000; an alcohol, diol or amine having a Mn<500; and one of i) a carboxylic acid; ii) a sulfonate or sulfonic acid having one amino group; iii) i and ii; iv) i and a homopolymer or copolymer of poly(ethylene glycol) (PEG) having one or two OH or amino groups at one chain end; v) ii and a homopolymer or copolymer of PEG having one or two OH or amino groups at one chain end; or vi) i, ii, and a homopolymer or copolymer of PEG having one or two OH or amino groups at one chain end.

Abstract: An example of a radiation curable binder dispersion includes water and a radiation curable binder dispersed therein. The radiation curable polyurethane is formed from a polyisocyanate; an acrylate or methacrylate having at least two hydroxyl functional groups and having an acrylate functional group or a methacrylate functional group; another acrylate or methacrylate having one hydroxyl functional group or one amino functional group; and one of i) 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; or ii) a combination of i and a compound including a carboxylic functional group.

Abstract: A colorless radiation curable binder dispersion includes water and a radiation curable polyurethane. The polyurethane is formed from a polyisocyanate; an acrylate or methacrylate having at least two hydroxyl (OH) groups and an acrylate or methacrylate group; another acrylate or methacrylate having an OH or amino group; and one of: i) a sulfonate or sulfonic acid having one amino group; ii) a combination of i and a compound including a carboxylic group and an OH or amino group; iii) a combination of i and a homopolymer or copolymer of poly(ethylene glycol) having one or two OH or amino groups at one chain end; or iv) a combination of i, a compound including a carboxylic group and an OH or amino group, and a homopolymer or copolymer of poly(ethylene glycol) having one or two OH or amino groups at one chain end.

Abstract: The present invention is drawn to a method of treating silica in an aqueous environment. The method can comprise steps of dispersing silica particulates in an aqueous environment to form an aqueous dispersion; reversing the net charge of a surface of the silica particulates from negative to positive using a surface activating agent, thereby forming surface-activated silica particulates dispersed in the water; and contacting the surface-activated silica particulates with organosilane reagents to form reagent-modified and surface-activated silica particulates.

Abstract: A hydrophilic pigment dispersant for an inkjet ink includes water and a hydrophilic polyurethane having a weight average molecular weight from 3,000 to 15,000, and an acid number ranging from 50 to 100. The polyurethane is formed from 25 wt % to 70 wt % of a non-aromatic polyisocyanate; 0 wt % to 60 wt % of a polyol having a weight average molecular weight from 500 to 5,000; 0 wt % to 30 wt % of an aromatic diol having a weight average molecular weight ranging from 100 to 1000; 5 wt % to 25 wt % of an acid monomer having a hydroxyl functional group, an amino functional group, or both hydroxyl and amino functional groups; and 0 wt % to 5 wt % of a polyethyleneoxide compound having a hydroxyl functional group, an amino functional group, or both hydroxyl and amino functional groups; wherein at least one of the polyol or the aromatic diol is present.

Abstract: A thermal inkjet ink set includes a pre-treatment fixing fluid, an ink, and a post-treatment fluid. The pre-treatment fixing fluid includes a metal salt. The ink includes an ink vehicle and a colorant. The post-treatment fluid includes a fluid vehicle and an anionic polyurethane acrylic hybrid polymer binder dispersed in the fluid vehicle. The anionic polyurethane acrylic hybrid polymer binder is present in an amount ranging from greater than 0 wt % to about 25 wt %. The anionic polyurethane acrylic hybrid polymer binder includes an acrylic polymer or copolymer, and an anionic polyurethane polymer encapsulating the acrylic polymer or copolymer.

Abstract: An example of a radiation curable binder dispersion for an inkjet ink includes water and a radiation curable polyurethane dispersed in the water. The radiation curable polyurethane has a weight average molecular weight that is equal to or less than 5,000, a glass transition temperature (Tg) less than 25° C., and a double bond density higher than 4.0. The radiation curable polyurethane binder dispersion is formed from a non-aromatic diisocyanate; a polyol; an acrylate or methacrylate, the acrylate or methacrylate having at least two hydroxyl functional groups and having an acrylate functional group or a methacrylate functional group; a compound including i) an ionic group or ii) a group to form an ionic group; and another acrylate or methacrylate, the other acrylate or methacrylate having a hydroxyl functional group or an amino functional group.

Abstract: A thermal inkjet ink set includes a pre-treatment fixing fluid, an ink, and a post-treatment fluid. The pre-treatment fixing fluid includes a metal salt. The ink includes an ink vehicle and a colorant. The post-treatment fluid includes a fluid vehicle and an anionic polyurethane acrylic hybrid polymer binder dispersed in the fluid vehicle. The anionic polyurethane acrylic hybrid polymer binder is present in an amount ranging from greater than 0 wt % to about 25 wt %. The anionic polyurethane acrylic hybrid polymer binder includes an acrylic polymer or copolymer, and an anionic polyurethane polymer encapsulating the acrylic polymer or copolymer.

Abstract: A metalized printable recording medium including a porous metallic reflective top layer, a porous ink-absorbing layer and a bottom supporting substrate. Method to form such printable recording medium and method to form printed images on the metalized printable recording medium are also disclosed.