Patents by Inventor Taisuke Ishii
Taisuke Ishii has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20090264845Abstract: 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.Type: ApplicationFiled: August 1, 2005Publication date: October 22, 2009Applicant: Mitsubishi ChemicalInventors: Shunichi Himori, Kiichi Itoh, Yasunari Sugyo, Taisuke Ishii
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Publication number: 20080108771Abstract: 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.Type: ApplicationFiled: December 12, 2007Publication date: May 8, 2008Inventors: Shunichi Himori, Kiichi Itoh, Yasunari Sugyo, Yoshiaki Mori, Taisuke Ishii
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Patent number: 7354646Abstract: 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.Type: GrantFiled: October 13, 2005Date of Patent: April 8, 2008Assignee: Mitsubishi Chemical CorporationInventors: Shunichi Himori, Kiichi Itoh, Yoshiaki Mori, Yasunari Sugyo, Taisuke Ishii
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Patent number: 7339016Abstract: 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.Type: GrantFiled: October 21, 2005Date of Patent: March 4, 2008Assignee: Mitsubishi Chemical CorporationInventors: Shunichi Himori, Kiichi Itoh, Yoshiaki Mori, Yasunari Sugyo, Taisuke Ishii
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Patent number: 7288610Abstract: A polymerization method in which a first liquid and a second liquid are mixed in a gas phase and polymerized in the form of droplets is disclosed, wherein a polymerizable monomer and a polymerization initiator are each contained in at least one of the first liquid and the second liquid, and at least one of the first liquid and the second liquid is injected in a spatially expanding film shape. By employing the polymerization method of this invention, high-quality polymer can be efficiently produced in large quantity by the droplet polymerization even using a polymerizable monomer with a rapid reaction rate.Type: GrantFiled: February 2, 2004Date of Patent: October 30, 2007Assignee: Mitsubishi Chemical CorporationInventors: Taisuke Ishii, Yoshiaki Mori, Shunichi Himori, Kiichi Itoh
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Publication number: 20060252899Abstract: 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.Type: ApplicationFiled: April 13, 2006Publication date: November 9, 2006Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Shunichi Himori, Kiichi Itoh, Yasunari Sugyo, Yoshiaki Mori, Taisuke Ishii
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Publication number: 20060160455Abstract: 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.Type: ApplicationFiled: December 5, 2005Publication date: July 20, 2006Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Yasunari Sugyo, Kiichi Itoh, Shunichi Himori, Yoshiaki Mori, Taisuke Ishii
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Publication number: 20060081812Abstract: 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.Type: ApplicationFiled: October 13, 2005Publication date: April 20, 2006Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Shunichi Himori, Kiichi Itoh, Yoshiaki Mori, Yasunari Sugyo, Taisuke Ishii
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Publication number: 20060079630Abstract: 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.Type: ApplicationFiled: October 21, 2005Publication date: April 13, 2006Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Shunichi Himori, Kiichi Itoh, Yoshiaki Mori, Yasunari Sugyo, Taisuke Ishii
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Publication number: 20060079631Abstract: 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.Type: ApplicationFiled: October 21, 2005Publication date: April 13, 2006Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Shunichi Himori, Kiichi Itoh, Yoshiaki Mori, Yasunari Sugyo, Taisuke Ishii
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Publication number: 20050119424Abstract: A polymerization method in which a first liquid and a second liquid are mixed in a gas phase and polymerized in the form of droplets is disclosed, wherein a polymerizable monomer and a polymerization initiator are each contained in at least one of the first liquid and the second liquid, and at least one of the first liquid and the second liquid is injected in a spatially expanding film shape. By employing the polymerization method of this invention, high-quality polymer can be efficiently produced in large quantity by the droplet polymerization even using a polymerizable monomer with a rapid reaction rate.Type: ApplicationFiled: February 2, 2004Publication date: June 2, 2005Applicant: Mitsubishi Chemical CorporationInventors: Taisuke Ishii, Yoshiaki Mori, Shunichi Himori, Kiichi Itoh