초록 ▼

A process for producing an improved super absorbent polymer is disclosed. The process comprises adding to a water-retained super absorbent polymer retaining 10 to 100 parts by weight of water per 100 parts by weight of the super absorbent polymer, (a) a polyfunctional compound having two or more rea

A process for producing an improved super absorbent polymer is disclosed. The process comprises adding to a water-retained super absorbent polymer retaining 10 to 100 parts by weight of water per 100 parts by weight of the super absorbent polymer, (a) a polyfunctional compound having two or more reactive groups and selected from a hydrophilic polymer or a metallic compound in an amount of 0.005 to 5 parts by weight per 100 parts by weight of the super absorbent polymer, and (b) a crosslinking agent having two or more functional groups capable of reacting with the polyfunctional compound at a weight ratio of the polyfunctional compound to the crosslinking agent of 0.1 to 30; mixing; and allowing the mixture to react by heating.

대표청구항 ▼

[ We claim:] [1.] A process for producing an improved super absorbent polymer comprising adding to a water-retained super absorbent polymer retaining 10 to 100 parts by weight of water per 100 parts by weight of the super absorbent polymer,(a) a hydrophilic polymer having two or more reactive groups

[ We claim:] [1.] A process for producing an improved super absorbent polymer comprising adding to a water-retained super absorbent polymer retaining 10 to 100 parts by weight of water per 100 parts by weight of the super absorbent polymer,(a) a hydrophilic polymer having two or more reactive groups selected from an amide group, a hydroxyl group, an amino group , an aldehyde group, a sulfo group and a carboxyl group, ora metallic compound of silicon, titanium or zirconium having two or more reactive groups selected from an alkoxyl group, a halogen group, an isocyanate group and an acyloxy group, in an amount of 0.005 to 5 parts by weight per 100 parts by weight of the super absorbent polymer, and(b) a crosslinking agent capable of reacting with the hydrophilic polymer or the metallic compound, provided that;the crosslinking agent for the hydrophilic polymer is at least one member selected from the group consisting of a polyglycidyl ether, a haloepoxy compound, a polyaldehyde, a polyol and a polyamine, andthe crosslinking agent for the metallic compound has two or more functional groups selected from a hydroxyl group, an epoxy group, a carboxyl group, an amino group and a thio group,at a weight ratio of the hydrophilic polymer or the metallic compound to the crosslinking agent of 0.1 to 30; mixing; and allowing the mixture to react by heating.