Patents by Inventor Takayasu Taniguchi
Takayasu Taniguchi 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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Patent number: 8981176Abstract: The object of the present invention is to provide a water-absorbing resin compound, wherein the water-absorbing resin compound can retain antibacterial properties of an antibacterial metal to suppress the emission of unpleasant odors even when an organic material exists in a system in the case of using an eluting-type antibacterial agent. Thus, the present invention relates to a water-absorbing resin compound, which comprises a water-absorbing resin, an antibacterial agent having a porous material incorporating an antibacterial metal, and a metal chelating agent.Type: GrantFiled: November 30, 2010Date of Patent: March 17, 2015Assignee: Sumitomo Seika Chemicals Co., Ltd.Inventors: Takayasu Taniguchi, Masayoshi Handa, Yasuhiro Nawata
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Patent number: 8524797Abstract: A water-absorbent resin composition having an antimicrobial property, which suppresses the generation of dust of the antimicrobial agent. A water-absorbent resin composition comprising a water-absorbent resin and an antimicrobial agent comprising an inorganic compound carrying an antimicrobial metal, the water-absorbent resin composition being characterized in that the degree of generated dust of the water-absorbent resin composition is at most 100 CPM. The water-absorbent resin composition of the present invention can be suitably used as hygienic materials such as disposable diaper, sanitary napkin and incontinence pad; urine-absorbent materials for pets; materials for civil engineering and construction such as packing materials; drip absorbents; food freshness retaining materials such as cold-reserving agents; horticultural articles such as water-retaining materials for soils; and the like.Type: GrantFiled: October 24, 2005Date of Patent: September 3, 2013Assignee: Sumitomo Seika Chemicals Co., Ltd.Inventors: Takayasu Taniguchi, Tatsuya Oida, Yasuhiro Nawata
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Patent number: 8383696Abstract: A water-absorbent resin composition having an antimicrobial property, which suppresses the generation of dust of the antimicrobial agent. A water-absorbent resin composition comprising a water-absorbent resin and an antimicrobial agent comprising an inorganic compound carrying an antimicrobial metal, the water-absorbent resin composition being characterized in that the degree of generated dust of the water-absorbent resin composition is at most 100 CPM. The water-absorbent resin composition of the present invention can be suitably used as hygienic materials such as disposable diaper, sanitary napkin and incontinence pad; urine-absorbent materials for pets; materials for civil engineering and construction such as packing materials; drip absorbents; food freshness retaining materials such as cold-reserving agents; horticultural articles such as water-retaining materials for soils; and the like.Type: GrantFiled: November 23, 2011Date of Patent: February 26, 2013Assignee: Sumitomo Seika Chemicals Co., Ltd.Inventors: Takayasu Taniguchi, Tatsuya Oida, Yasuhiro Nawata
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WATER-ABSORBENT RESIN PARTICLE, METHOD FOR PRODUCTION THEREOF, AND ABSORBENT MATERIAL USING THE SAME
Publication number: 20120298913Abstract: A method for production of a water-absorbent resin particle which is excellent in a particle strength, and in which even after mechanical impact, a particle diameter retaining rate and a retaining rate of water absorption capacity under pressure are high, and an absorbent material using the same particle. The method includes the steps of polymerizing a water-soluble ethylenic unsaturated monomer using a water-soluble radical polymerization initiator, optionally in the presence of a crosslinking agent, to obtain a water-absorbent resin particle precursor, adding a post-crosslinking agent to crosslink a surface of the particle, adding an amorphous silica particle and adjusting the resulting particle to a moisture content of less than 10%, and subsequently adding moisture to adjust a final moisture content of the resulting particle to 10 to 20%.Type: ApplicationFiled: August 7, 2012Publication date: November 29, 2012Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Kimihiko Kondo, Takayasu Taniguchi, Yasuhiro Nawata -
Publication number: 20120070484Abstract: A water-absorbent resin composition having an antimicrobial property, which suppresses the generation of dust of the antimicrobial agent. A water-absorbent resin composition comprising a water-absorbent resin and an antimicrobial agent comprising an inorganic compound carrying an antimicrobial metal, the water-absorbent resin composition being characterized in that the degree of generated dust of the water-absorbent resin composition is at most 100 CPM. The water-absorbent resin composition of the present invention can be suitably used as hygienic materials such as disposable diaper, sanitary napkin and incontinence pad; urine-absorbent materials for pets; materials for civil engineering and construction such as packing materials; drip absorbents; food freshness retaining materials such as cold-reserving agents; horticultural articles such as water-retaining materials for soils; and the like.Type: ApplicationFiled: November 23, 2011Publication date: March 22, 2012Inventors: Takayasu TANIGUCHI, Tatsuya Oida, Yasuhiro Nawata
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Publication number: 20110068300Abstract: The object of the present invention is to provide a water-absorbing resin compound, wherein the water-absorbing resin compound can retain antibacterial properties of an antibacterial metal to suppress the emission of unpleasant odors even when an organic material exists in a system in the case of using an eluting-type antibacterial agent. Thus, the present invention relates to a water-absorbing resin compound, which comprises a water-absorbing resin, an antibacterial agent having a porous material incorporating an antibacterial metal, and a metal chelating agent.Type: ApplicationFiled: November 30, 2010Publication date: March 24, 2011Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Takayasu Taniguchi, Masayoshi Handa, Yasuhiro Nawata
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Patent number: 7868075Abstract: The object of the present invention is to provide a water-absorbing resin compound, wherein the water-absorbing resin compound can retain antibacterial properties of an antibacterial metal to suppress the emission of unpleasant odors even when an organic material exists in a system in the case of using an eluting-type antibacterial agent. Thus, the present invention relates to a water-absorbing resin compound, which comprises a water-absorbing resin, an antibacterial agent having a porous material incorporating an antibacterial metal, and a metal chelating agent.Type: GrantFiled: April 7, 2004Date of Patent: January 11, 2011Assignee: Sumitomo Seika Chemicals Co., Ltd.Inventors: Takayasu Taniguchi, Masayoshi Handa, Yasuhiro Nawata
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Patent number: 7737231Abstract: A process for preparing a water-absorbent resin made from an ?,?-unsaturated carboxylic acid as an essential monomer characterized in that the process comprises allowing a metal chelating agent to be present at any step in the process in an amount of 0.001 to 6 parts by weight, based on 100 parts by weight of the ?,?-unsaturated carboxylic acid; and adding a reducing agent or an oxidizing agent thereto in an amount of 0.001 to 6 parts by weight, based on 100 parts by weight of the ?,?-unsaturated carboxylic acid before initiation of drying and/or during drying of a gelated product containing a water-absorbent resin obtained by polymerization.Type: GrantFiled: December 27, 2002Date of Patent: June 15, 2010Assignee: Sumitomo Seika Chemicals Co., Ltd.Inventors: Masayoshi Handa, Takayasu Taniguchi, Yasuhiro Nawata, Masato Fujikake
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WATER-ABSORBENT RESIN PARTICLE, METHOD FOR PRODUCTION THEREOF, AND ABSORBENT MATERIAL USING THE SAME
Publication number: 20090186542Abstract: The present invention provides a water-absorbent resin particle which is excellent in a particle strength, and in which even after mechanical impact, a particle diameter retaining rate and a retaining rate of water absorption capacity under pressure are high, a method for production thereof, and an absorbent material using the same. More particularly, the present invention provides a water-absorbent resin particle obtained by polymerizing a water-soluble ethylenic unsaturated monomer using a water-soluble radical polymerization initiator, if necessary, in the presence of a crosslinking agent, to obtain a water-absorbent resin particle precursor, adding a post-crosslinking agent to crosslink a surface of the particle, and adding an amorphous silica particle, in which a moisture content is 10 to 20%, and a particle diameter retaining rate after a particle collision test is 90% or more, a method for production thereof, and an absorbent material using the same.Type: ApplicationFiled: July 27, 2007Publication date: July 23, 2009Applicant: SUMITOMO SEIKA CHEMICAL CO., LTD.Inventors: Kimihiko Kondo, Takayasu Taniguchi, Yasuhiro Nawata -
Publication number: 20080071004Abstract: A water-absorbing resin composition showing suppressed dusting of an antimicrobial agent and having an antimicrobial activity. A water-absorbing resin composition which contains a water-absorbing resin and an antimicrobial agent comprising an inorganic compound carrying an antimicrobial metal characterized by showing a dusting degree of 100 CPM or less. This water-absorbing resin composition is appropriately usable in sanitary goods such as paper diapers, sanitary pads, incontinence pads, urine-absorbing materials for pet animals, structural materials such as packings, freshness-preserving materials for foods such as drip-absorbers and cooling agents, agricultural/horticultural goods such as water-retention agents for soil and so on.Type: ApplicationFiled: October 24, 2005Publication date: March 20, 2008Inventors: Takayasu Taniguchi, Tatsuya Oida, Yasuhiro Nawata
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Publication number: 20070111004Abstract: A water-absorbent resin composition comprising a water-absorbent resin, an oxygen-containing reducing inorganic salt, an aminocarboxylic acid-based metal chelating agent and an organic antioxidant; an absorbent comprising the above-mentioned water-absorbent resin composition and a hydrophilic fiber; and an absorbent article comprising the above-mentioned absorbent interposed between a liquid-permeable sheet and a liquid-impermeable sheet. The water-absorbent resin composition of the present invention is used in absorbent articles such as disposable diaper, sanitary napkin, and the like.Type: ApplicationFiled: July 7, 2004Publication date: May 17, 2007Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Masayoshi Handa, Takayasu Taniguchi, Tatsuya Oida, Tasuhiro Nawata
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Publication number: 20060189953Abstract: The object of the present invention is to provide a water-absorbing resin compound, wherein the water-absorbing resin compound can retain antibacterial properties of an antibacterial metal to suppress the emission of unpleasant odors even when an organic material exists in a system in the case of using an eluting-type antibacterial agent. Thus, the present invention relates to a water-absorbing resin compound, which comprises a water-absorbing resin, an antibacterial agent having a porous material incorporating an antibacterial metal, and a metal chelating agent.Type: ApplicationFiled: April 7, 2004Publication date: August 24, 2006Applicant: Sumitomo Seika Chemicals Co., Ltd.Inventors: Takayasu Taniguchi, Masayoshi Handa, Yasuhiro Nawata
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Publication number: 20050085604Abstract: A process for preparing a water-absorbent resin made from an ?,?-unsaturated carboxylic acid as an essential monomer characterized in that the process comprises allowing a metal chelating agent to be present at any step in the process in an amount of 0.001 to 6 parts by weight, based on 100 parts by weight of the ?,?-unsaturated carboxylic acid; and adding a reducing agent or an oxidizing agent thereto in an amount of 0.001 to 6 parts by weight, based on 100 parts by weight of the ?,?-unsaturated carboxylic acid before initiation of drying and/or during drying of a gelated product containing a water-absorbent resin obtained by polymerization.Type: ApplicationFiled: December 27, 2002Publication date: April 21, 2005Inventors: Masayoshi Handa, Takayasu Taniguchi, Yasuhiro Nawata, Masato Fujikake