Abstract: An absorbent composite comprising a bound particulate absorbent polymer in which two or more nearly spherical absorbent polymer particles are bound to each other and a web-like absorbent polymer, wherein the bound particulate absorbent polymer and the web-like absorbent polymer are bound to a substrate. The composite has a large absorption and a high absorbing speed in which the absorbent polymer is kept uniformly dispersed on the support throughout before and after absorption.

Abstract: In a method of redox polymerization of monomer by the use of a non-metal reducing agent and a non-metal oxidizing agent, a transition metal compound is used in addition to the reducing agent and the oxidizing agent in an amount of from 0.01 to 100 ppm by weight in terms of the metal thereof relative to the monomer, whereby the polymerization speed is significantly increased. Using this, water-absorbent resin composite and an absorbent article can be produced.

Abstract: Disclosed is a water-absorbent polymer composite and composition thereof comprising a water-absorbent polymer particle and two or more fibers, wherein said polymer particle has a substantially spherical shape, at least one of said two or more fibers is partially wrapped in the polymer particle and partially exposed to outside the particle, and at least one of said two or more fibers is unwrapped in the polymer particle and partially adhered to a surface of the polymer particle. This water-absorbent polymer composite is characterized in that the fibers are stably fixed to the water-absorbent polymer not only in dry but also in wet through water absorption for swelling, the water-absorbent polymer content can be enlarged relative to the fibers, the polymer can be uniformly fixed to the fibers, the composite is flexible and can be thinned, opened and mixed with any other material uniformly.

Abstract: Disclosed is a method for preparing a water-absorbent polymer composite comprising the steps of contacting a droplet containing a solvent and said polymerizable monomer before polymerization and/or under polymerization with first fibers fed through a first supply port of said reactor in a gas phase, proceeding with polymerization of said polymerizable monomer, contacting the resultant droplet containing said solvent, the polymerizable monomer under polymerization and said first fibers with second fibers fed through a second supply port of said reactor in a gas phase, and proceeding with further polymerization of said polymerizable monomer to form said water-absorbent polymer composite.

Abstract: In a method of redox polymerization of monomer by the use of a non-metal reducing agent and a non-metal oxidizing agent, a transition metal compound is used in addition to the reducing agent and the oxidizing agent in an amount of from 0.01 to 100 ppm by weight in terms of the metal thereof relative to the monomer, whereby the polymerization speed is significantly increased. Using this, water-absorbent resin composite and an absorbent article can be produced.

Abstract: An absorbent article containing a water-absorbent resin composite comprising one nearly spherical water-absorbent resin particle and two or more fibers, wherein one or more of the fibers are partially embedded in the resin particle and are partially exposed from the resin particle, and wherein one or more of the fibers are never embedded in the resin particle but partially adhere to the surface of the resin particle. In the absorbent article, the water-absorbent resin particle is uniformly fixed on the fiber before, during and after water absorption, so that the water-absorbent resin can exist at a higher ratio to the fiber. Thus, the absorbent article characteristically has great softness and high shape stability.

Abstract: Disclosed is a water-absorbent polymer composite and composition thereof comprising a water-absorbent polymer particle and two or more fibers, wherein said polymer particle has a substantially spherical shape, at least one of said two or more fibers is partially wrapped in the polymer particle and partially exposed to outside the particle, and at least one of said two or more fibers is unwrapped in the polymer particle and partially adhered to a surface of the polymer particle. This water-absorbent polymer composite is characterized in that the fibers are stably fixed to the water-absorbent polymer not only in dry but also in wet through water absorption for swelling, the water-absorbent polymer content can be enlarged relative to the fibers, the polymer can be uniformly fixed to the fibers, the composite is flexible and can be thinned, opened and mixed with any other material uniformly.

Abstract: Disclosed is a method for preparing a water-absorbent polymer composite comprising the steps of contacting a droplet containing a solvent and said polymerizable monomer before polymerization and/or under polymerization with first fibers fed through a first supply port of said reactor in a gas phase, proceeding with polymerization of said polymerizable monomer, contacting the resultant droplet containing said solvent, the polymerizable monomer under polymerization and said first fibers with second fibers fed through a second supply port of said reactor in a gas phase, and proceeding with further polymerization of said polymerizable monomer to form said water-absorbent polymer composite.

Abstract: Disclosed is a method for preparing a water-absorbent polymer composite comprising the steps of contacting said polymerizable monomer with one or more fibers having a contact angle against water of 0 to 60 degrees in a gas phase, and proceeding with the polymerization of said monomers to form the water-absorbent polymer composite. The method can provide a water-absorbent polymer composite characterized in that the fibers are stably fixed to the water-absorbent polymer not only in dry but also in wet through water absorption for swelling, the water-absorbent polymer content can be enlarged relative to the fibers, the polymer can be uniformly fixed to the fibers, the composite is flexible and can be thinned, and it can be opened by itself and can be uniformly mixed with any other material.