JP2004122531A5 - - Google Patents

Claims (10)

On at least one surface of the base sheet, the ink-jet recording sheet provided with an ink receiving layer of at least one layer, the ink receiving layer, and an organic polyisocyanate, a high molecular weight hydrophilic polyol and / or polyamine, at least one reactive and gender groups and a compound having at least one tertiary amino group in the same molecule, a compound having in the same molecule at least one reactive group and at least one hydrolyzable silyl group, characterized in that it is formed by using a composition comprising a hydrophilic polyurethane resin and the fine particles of alumina having a hydrophilic segment and a tertiary amino group and a hydrolyzable silyl group obtained by reaction Inkjet recording sheet.   The inkjet recording sheet according to claim 1, wherein the content of the particulate alumina is 5 to 95% by weight based on the hydrophilic polyurethane resin.   The fine particle alumina is obtained by using a mixture of high molecular weight hydrophilic polyol or polyamine and fine particle alumina as at least part of the high molecular weight hydrophilic polyol or polyamine when synthesizing the hydrophilic polyurethane resin. The ink jet recording sheet according to claim 1, which is contained in a water-soluble polyurethane resin.   The inkjet recording sheet according to claim 1, wherein the fine particle alumina has an average particle diameter of 1 to 300 nm. Wherein the content of the hydrophilic segments of the hydrophilic polyurethane resin is, ink-jet recording sheet according to claim 1 which is 3 0-80 wt%. On at least one surface of a substrate sheet, a method for producing an ink jet recording sheet provided with an ink receiving layer of at least one layer, the ink receiving layer, and an organic polyisocyanate, a high molecular weight hydrophilic polyol and / or polyamine, at least A compound having one reactive group and at least one tertiary amino group in the same molecule, and at least one reactive group and at least one hydrolyzable silyl group in the same molecule a compound, by reaction in synthesizing a hydrophilic polyurethane resin having a hydrophilic segment and a tertiary amino group and a hydrolyzable silyl group, as at least a part of the high molecular weight hydrophilic polyol or polyamine , High molecular weight hydrophilic polyol or alumina dispersed hydrophilic using a mixture of polyamine and fine particle alumina Method for manufacturing an ink jet recording sheet, which comprises forming by using a polyurethane-based resin composition.   The method for producing an ink jet recording sheet according to claim 6, wherein the mixture is obtained by removing a dispersion medium of alumina sol from a mixture of high molecular weight hydrophilic polyol or polyamine and alumina sol.   The method for producing an ink jet recording sheet according to claim 6, wherein the content of the particulate alumina in the mixture is 5 to 95% by weight with respect to the hydrophilic polyurethane resin.   The method for producing an ink jet recording sheet according to claim 6, wherein the fine particle alumina has an average particle diameter of 1 to 300 nm. The content of the hydrophilic segments in the hydrophilic polyurethane resin is, ink-jet recording sheet manufacturing method according to claim 6 which is 3 0-80 wt%.