Patents by Inventor Tomoya TANIYAMA
Tomoya TANIYAMA 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: 11926724Abstract: A method for manufacturing a foam rubber by foaming a polymer latex is provided, wherein the polymer latex used has a solids content of 60.0 wt % or more, has a volume particle size distribution where the volume cumulative particle size d10 is more than 140 nm, and comprises 0.001 to 1.0 part by weight of antifoaming agent relative to 100 parts by weight of polymer in the polymer latex.Type: GrantFiled: July 10, 2018Date of Patent: March 12, 2024Assignee: ZEON CORPORATIONInventors: Tomoya Taniyama, Hidekazu Haneda
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Patent number: 11891492Abstract: A method for manufacturing a foam rubber by foaming a polymer latex is provided, wherein the polymer latex used has a solids content of 60.0 wt % or more, comprises 0.001 to 1.0 part by weight of antifoaming agent relative to 100 parts by weight of polymer in the polymer latex, and has a viscosity at 25° C. of 370 cps or less when the solids content is controlled to 66.0 wt %.Type: GrantFiled: July 10, 2018Date of Patent: February 6, 2024Assignee: ZEON CORPORATIONInventors: Tomoya Taniyama, Hidekazu Haneda
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Publication number: 20230151193Abstract: A latex composition for dip molding including a latex of a conjugated diene polymer (A) having a methyl ethyl ketone insolubles content of 50% by weight or less, and a latex of a polymer (B) having a methyl ethyl ketone insolubles content of 55% by weight or more.Type: ApplicationFiled: May 20, 2021Publication date: May 18, 2023Applicant: ZEON CORPORATIONInventors: Kentaro HAYASAKA, Tomoya TANIYAMA
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Publication number: 20230086263Abstract: A latex composition includes a latex of a conjugated diene polymer (A) having a glass transition temperature of 10° C. or less and a latex of a polymer (B) having a glass transition temperature of more than 10° C., wherein the value of (CS(B)?CS(A)) is more than 0% by weight, where a chemical stability of the latex of the conjugated diene polymer (A) to CaCl2, when the solids concentration of the latex is 20% by weight, is defined as CS(A) (% by weight), and a chemical stability of the latex of the polymer (B) to CaCl2, when the solids concentration of the latex is 20% by weight, is defined as CS(B) (% by weight).Type: ApplicationFiled: February 15, 2021Publication date: March 23, 2023Applicant: ZEON CORPORATIONInventors: Tomoya TANIYAMA, Kentaro HAYASAKA
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Patent number: 11525046Abstract: A foam containing a nitrile group-containing conjugated diene copolymer and a urethane polymer, wherein relative to 100 wt % of the sum of the nitrile group-containing conjugated diene copolymer and the urethane polymer, the nitrile group-containing conjugated diene copolymer is present in an amount of less than 90 wt % and the urethane polymer is present in an amount of more than 10 wt %, the nitrile group-containing conjugated diene copolymer contains ethylenically unsaturated nitrile monomer units in an amount of more than 31 wt %, the foam has a density of 0.08 to 0.30 g/cm3, and in observation of an arbitrary cross section of the foam, air bubble cross sections present in the cross section have an average diameter of 350 ?m or less, and the number of air bubble cross sections with a diameter of 0.6 mm or more present in the cross section is 0.062 per mm2 or less.Type: GrantFiled: December 10, 2018Date of Patent: December 13, 2022Assignee: ZEON CORPORATIONInventors: Tomoya Taniyama, Takashi Iga
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Patent number: 11325356Abstract: A method of producing a laminated body, the method including a coagulant solution deposition step of depositing a coagulant solution on a fiber substrate, and a coagulation step of forming a polymer layer on the fiber substrate by bringing a polymer latex into contact with the fiber substrate having the coagulant solution deposited thereon to cause a polymer to coagulate. As the coagulant solution, a solution obtained by dissolving or dispersing 0.2 to 7.0% by weight of a metal salt as a coagulant and 0.1 to 7.0% by weight of an organic acid in a solvent is used. In the method of producing a laminated body, the metal salt is a polyvalent metal salt. In the method of producing a laminated body, the organic acid is an organic acid having at least one group selected from a carboxyl group, a sulfo group, a hydroxy group, and a thiol group.Type: GrantFiled: September 19, 2017Date of Patent: May 10, 2022Assignee: ZEON CORPORATIONInventors: Kentaro Hayasaka, Tomoya Taniyama, Shinji Kato
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Patent number: 11305518Abstract: A laminated body formed by laminating a fiber substrate composed of a plurality of fibers and a polymer layer formed from a polymer latex. The polymer layer covers the fiber substrate in a state in which a portion of the polymer layer has permeated among the fibers. A ratio (t1/d) of a thickness t1 of the portion of the polymer layer that has permeated among the fibers (from a top surface of the fiber substrate) to a substrate layer average thickness d is 0.1 to 0.95. A thickness t2 of the portion of the polymer layer covering the top surface of the fiber substrate (from the top surface of the fiber substrate) is 80 ?m or more.Type: GrantFiled: January 12, 2018Date of Patent: April 19, 2022Assignee: ZEON CORPORATIONInventors: Tomoya Taniyama, Kentaro Hayasaka, Shinji Kato
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Publication number: 20220041845Abstract: A latex composition for dip-molding obtained by mixing a latex of conjugated diene polymer (A) having a glass transition temperature of 10° C. or less and a latex of polymer (B) having a glass transition temperature above 10° C. A latex composition for dip-molding capable of providing a dip-molded article excellent in wear resistance, as well as wet grip when water and oil are deposited thereon can be provided.Type: ApplicationFiled: November 27, 2019Publication date: February 10, 2022Applicant: ZEON CORPORATIONInventors: Kentaro HAYASAKA, Kunihiko MAKINO, Tomoya TANIYAMA
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Patent number: 11234469Abstract: A dip-formed article includes a laminate in which a rubber layer is laminated on a fiber base material. The thickness of the rubber layer is 0.2 to 0.8 mm, the rubber constituting the rubber layer penetrates into the fiber base material, the maximum depth to which the rubber has penetrated into the fiber base material is 0.1 to 0.3 mm, and the maximum stress at 50% elongation of the laminate is 20 N or smaller.Type: GrantFiled: June 30, 2016Date of Patent: February 1, 2022Assignee: ZEON CORPORATIONInventors: Naohiro Igari, Shinji Kato, Tetsuya Akabane, Tomoya Taniyama
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Publication number: 20210179801Abstract: A foam containing a nitrile group-containing conjugated diene copolymer and a urethane polymer, wherein relative to 100 wt % of the sum of the nitrile group-containing conjugated diene copolymer and the urethane polymer, the nitrile group-containing conjugated diene copolymer is present in an amount of less than 90 wt % and the urethane polymer is present in an amount of more than 10 wt %, the nitrile group-containing conjugated diene copolymer contains ethylenically unsaturated nitrile monomer units in an amount of more than 31 wt %, the foam has a density of 0.08 to 0.30 g/cm3, and in observation of an arbitrary cross section of the foam, air bubble cross sections present in the cross section have an average diameter of 350 ?m or less, and the number of air bubble cross sections with a diameter of 0.6 mm or more present in the cross section is 0.062 per mm2 or less.Type: ApplicationFiled: December 10, 2018Publication date: June 17, 2021Applicant: ZEON CORPORATIONInventors: Tomoya TANIYAMA, Takashi IGA
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Publication number: 20200369846Abstract: A method for manufacturing a foam rubber by foaming a polymer latex is provided, wherein the polymer latex used has a solids content of 60.0 wt % or more, has a volume particle size distribution where the volume cumulative particle size d10 is more than 140 nm, and comprises 0.001 to 1.0 part by weight of antifoaming agent relative to 100 parts by weight of polymer in the polymer latex.Type: ApplicationFiled: July 10, 2018Publication date: November 26, 2020Applicant: ZEON CORPORATIONInventors: Tomoya TANIYAMA, Hidekazu HANEDA
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Publication number: 20200362131Abstract: A method for manufacturing a foam rubber by foaming a polymer latex is provided, wherein the polymer latex used has a solids content of 60.0 wt % or more, comprises 0.001 to 1.0 part by weight of antifoaming agent relative to 100 parts by weight of polymer in the polymer latex, and has a viscosity at 25° C. of 370 cps or less when the solids content is controlled to 66.0 wt %.Type: ApplicationFiled: July 10, 2018Publication date: November 19, 2020Applicant: ZEON CORPORATIONInventors: Tomoya TANIYAMA, Hidekazu HANEDA
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Patent number: 10661536Abstract: A rubber formed article includes a laminate in which a rubber layer of nitrile rubber is laminated on a fiber base material. The nitrile rubber contains a copolymer having 52 to 78% by weight of conjugated diene monomer units, 20 to 40% by weight of ?,?-ethylenically unsaturated nitrile monomer units, and 2 to 10% by weight of ethylenically unsaturated monocarboxylic acid monomer units. Stress at 50% elongation of the laminate is 20 N or smaller. A ratio of an area where rubber is visible when the laminate is viewed from the back side to an area of the laminate is 15% or less. The thickness of the rubber layer is 0.30 mm or less.Type: GrantFiled: July 1, 2016Date of Patent: May 26, 2020Assignee: ZEON CORPORATIONInventors: Shinji Kato, Naohiro Igari, Tetsuya Akabane, Tomoya Taniyama
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Publication number: 20200031100Abstract: A method of producing a laminated body, the method including a coagulant solution deposition step of depositing a coagulant solution on a fiber substrate, and a coagulation step of forming a polymer layer on the fiber substrate by bringing a polymer latex into contact with the fiber substrate having the coagulant solution deposited thereon to cause a polymer to coagulate. As the coagulant solution, a solution obtained by dissolving or dispersing 0.2 to 7.0% by weight of a metal salt as a coagulant and 0.1 to 7.0% by weight of an organic acid in a solvent is used. In the method of producing a laminated body, the metal salt is a polyvalent metal salt. In the method of producing a laminated body, the organic acid is an organic acid having at least one group selected from a carboxyl group, a sulfo group, a hydroxy group, and a thiol group.Type: ApplicationFiled: September 19, 2017Publication date: January 30, 2020Applicant: ZEON CORPORATIONInventors: Kentaro HAYASAKA, Tomoya TANIYAMA, Shinji KATO
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Publication number: 20190375199Abstract: A laminated body formed by laminating a fiber substrate composed of a plurality of fibers and a polymer layer formed from a polymer latex. The polymer layer covers the fiber substrate in a state in which a portion of the polymer layer has permeated among the fibers. A ratio (t1/d) of a thickness t1 of the portion of the polymer layer that has permeated among the fibers (from a top surface of the fiber substrate) to a substrate layer average thickness d is 0.1 to 0.95. A thickness t2 of the portion of the polymer layer covering the top surface of the fiber substrate (from the top surface of the fiber substrate) is 80 ?m or more.Type: ApplicationFiled: January 12, 2018Publication date: December 12, 2019Applicant: ZEON CORPORATIONInventors: Tomoya TANIYAMA, Kentaro HAYASAKA, Shinji KATO
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Publication number: 20180303173Abstract: A dip-formed article includes a laminate in which a rubber layer is laminated on a fiber base material. The thickness of the rubber layer is 0.2 to 0.8 mm, the rubber constituting the rubber layer penetrates into the fiber base material, the maximum depth to which the rubber has penetrated into the fiber base material is 0.1 to 0.3 mm, and the maximum stress at 50% elongation of the laminate is 20 N or smaller.Type: ApplicationFiled: June 30, 2016Publication date: October 25, 2018Applicant: ZEON CORPORATIONInventors: Naohiro IGARI, Shinji KATO, Tetsuya AKABANE, Tomoya TANIYAMA
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Publication number: 20180186128Abstract: A rubber formed article includes a laminate in which a rubber layer of nitrile rubber is laminated on a fiber base material. The nitrile rubber contains a copolymer having 52 to 78% by weight of conjugated diene monomer units, 20 to 40% by weight of ?,?-ethylenically unsaturated nitrile monomer units, and 2 to 10% by weight of ethylenically unsaturated monocarboxylic acid monomer units. Stress at 50% elongation of the laminate is 20 N or smaller. A ratio of an area where rubber is visible when the laminate is viewed from the back side to an area of the laminate is 15% or less. The thickness of the rubber layer is 0.30 mm or less.Type: ApplicationFiled: July 1, 2016Publication date: July 5, 2018Applicant: ZEON CORPORATIONInventors: Shinji KATO, Naohiro IGARI, Tetsuya AKABANE, Tomoya TANIYAMA