An inkjet ink, a method for preparing the same and use thereof are described. The inkjet ink includes the following components in mass percentage: 5%-15% of a reactive dye, 15%-40% of a polyol, 2%-35% of an auxiliary agent, and remaining amount of water, wherein the reactive dye is selected from at least one of a dye with bifunctional reactive groups and a dye with trifunctional reactive groups. The described reactive dye in the inkjet ink has high reactivity, can react with a fabric and firmly adhere to the fabric, with the color fixation rate as high as 90-95%, good color fastness, less unfixed dye, and good storage stability. The described inkjet ink only needs to be washed with cold water or warm water to remove a primer during post-processing, and the washing period is short, and it can meet the requirements of clothing use even without washing by water.

An inkjet ink, a method for preparing the same and use thereof are described. The inkjet ink includes the following components in mass percentage: 5%-15% of a reactive dye, 15%-40% of a polyol, 2%-35% of an auxiliary agent, and remaining amount of water, wherein the reactive dye is selected from at least one of a dye with bifunctional reactive groups and a dye with trifunctional reactive groups. The described reactive dye in the inkjet ink has high reactivity, can react with a fabric and firmly adhere to the fabric, with the color fixation rate as high as 90-95%, good color fastness, less unfixed dye, and good storage stability. The described inkjet ink only needs to be washed with cold water or warm water to remove a primer during post-processing, and the washing period is short, and it can meet the requirements of clothing use even without washing by water.

An aqueous ink for ink jet recording contains a titanium oxide particle containing titanium oxide, at least part of the surface of the titanium oxide being covered with alumina and silica in specific proportions, and a compound serving as a dispersant for the titanium oxide particle, the compound being represented by the following general formula (1):

##STR00001##

where in general formula (1), R.sub.1, R.sub.2 and R.sub.3 are each independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, each R.sub.4 is independently an alkylene group having 2 to 4 carbon atoms, X is a single bond or an alkylene group having 1 to 6 carbon atoms, n is 6 to 24, a is 1 to 3, b is 0 to 2 and a + b = 3.

An aqueous ink for ink jet recording contains a titanium oxide particle containing titanium oxide, at least part of the surface of the titanium oxide being covered with alumina and silica in specific proportions, and a compound serving as a dispersant for the titanium oxide particle, the compound being represented by the following general formula (1):

##STR00001##

where in general formula (1), R.sub.1, R.sub.2 and R.sub.3 are each independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, each R.sub.4 is independently an alkylene group having 2 to 4 carbon atoms, X is a single bond or an alkylene group having 1 to 6 carbon atoms, n is 6 to 24, a is 1 to 3, b is 0 to 2 and a + b = 3.

A process for producing a coated, printed substrate comprising (a) providing a printed substrate, wherein the substrate comprises a surface on which resides one or more areas of a layer of an ink, (b) bringing together a component A and a component B to form a urethane coating composition, wherein component A comprises a polyisocyanate prepolymer A1, wherein the polyisocyanate prepolymer A1 is a reaction product of a polyisocyanate monomer A1a and an isocyanate-polyreactive compound A1b, wherein component B comprises one or more polyol B1, wherein the urethane coating composition has isocyanate index greater than 0.9, (c) applying a layer of the urethane coating composition to the surface. Also provided is a coated printed substrate made by such a method.

A radiation curable inkjet ink including an adhesion promoter including (1) at least one a free radical polymerizable group selected from the group consisting of an acrylate, a methacrylate, an acryl amide and a methacryl amide; (2) at least one aliphatic tertiary amine; and (3) at least one carboxylic acid or salt thereof with the proviso that the carboxylic acid is linked to an aliphatic tertiary amine via a divalent linking group selected from the group consisting of an optionally substituted methylene group and an optionally substituted ethylene group.

A radiation curable inkjet ink including an adhesion promoter including (1) at least one a free radical polymerizable group selected from the group consisting of an acrylate, a methacrylate, an acryl amide and a methacryl amide; (2) at least one aliphatic tertiary amine; and (3) at least one carboxylic acid or salt thereof with the proviso that the carboxylic acid is linked to an aliphatic tertiary amine via a divalent linking group selected from the group consisting of an optionally substituted methylene group and an optionally substituted ethylene group.

The present invention relates to a polyurethane, which is particularly suitable as binder for a printing ink, which is obtainable by reacting: a) a polyol component including: i) at least one polytetramethylene glycol, ii) at least one diol having a molecular weight of not more than 200 g/mol being different from polytetramethylene glycol, iii) at least one trivalent or higher-valent alcohol having a molecular weight of not more than 6000 g/mol, b) an isocyanate component including at least one organic diisocyanate compound and c) at least one di-functional amine compound and at least one mono-functional amine compound.

The present invention relates to a polyurethane, which is particularly suitable as binder for a printing ink, which is obtainable by reacting: a) a polyol component including: i) at least one polytetramethylene glycol, ii) at least one diol having a molecular weight of not more than 200 g/mol being different from polytetramethylene glycol, iii) at least one trivalent or higher-valent alcohol having a molecular weight of not more than 6000 g/mol, b) an isocyanate component including at least one organic diisocyanate compound and c) at least one di-functional amine compound and at least one mono-functional amine compound.

A conductive paste, for forming an electrode of a solar cell, includes (A) a conductive component, (B) an epoxy resin, (C) an imidazole and (D) a solvent. An amount of (C) the imidazole in the conductive paste is 0.1 to 1.0% by weight based on 100% by weight of the conductive paste excluding (D) the solvent.