Patents by Inventor Daisuke Taguchi
Daisuke Taguchi 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: 20250171574Abstract: To provide a modified polytetrafluoroethylene with which a stretched porous body excellent in breaking strength can be produced, a molded product, and a method for producing a stretched porous body. The modified polytetrafluoroethylene of the present invention has units based on tetrafluoroethylene and units based on at least one monomer selected from a perfluoro(alkyl vinyl ether), hexafluoropropylene and a fluoroalkylethylene, wherein the thermal instability index is 0 to 15 and the area ratio S calculated by a predetermined method is 0.70 or less.Type: ApplicationFiled: December 30, 2024Publication date: May 29, 2025Applicant: AGC Inc.Inventors: Shiro EBATA, Shinya HIGUCHI, Kaori ABE, Daisuke TAGUCHI, Takehiro KOSE
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Publication number: 20240117088Abstract: To provide a method for producing a fluorinated copolymer, whereby it is possible to efficiently produce a fluorinated copolymer in which coloration and foaming are suppressed during heating. A method for producing a fluorinated copolymer, comprising a step of producing a fluorinated copolymer by polymerizing tetrafluoroethylene and other monomer other than the tetrafluoroethylene in the presence of a hydroperoxide, at least one selected from the group consisting of a sulfite, a hydrogen sulfite, a dithionite, and a metabisulfite, at least one selected from the group consisting of an acidic substance and a substance that generates an acid by hydrolysis, and an aqueous medium.Type: ApplicationFiled: November 27, 2023Publication date: April 11, 2024Applicant: AGC Inc.Inventors: Kosuke SHIBASAKI, Yuki ORITO, Keiji HORI, Shintaro FUKUNAGA, Daisuke TAGUCHI
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Publication number: 20230391934Abstract: To provide a copolymer capable of forming a coated electrical wire excellent in engine oil resistance, a composition, a molded product, and a coated electrical wire. The copolymer of the present invention is a copolymer comprising units based on ethylene, units based on tetrafluoroethylene, and units based on compound A represented by CH?CX(CF2)nY (wherein X and Y are each independently a hydrogen atom or a fluorine atom, and n is an integer of from 2 to 6) or compound B represented by CF2?CF—O—C3F7, wherein the crystal lamella thickness determined by the small angle X-ray scattering method is at most 4.0 nm and the melting point is at least 245° C.Type: ApplicationFiled: August 8, 2023Publication date: December 7, 2023Applicant: AGC Inc.Inventors: Kosuke SHIBASAKI, Shuma KAWANAMI, Daisuke TAGUCHI, Shintaro FUKUNAGA, Mie TAKAYAMA, Kazuhiro NAKABAYASHI
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Publication number: 20230357511Abstract: The present invention provides, for example, a method for efficiently producing a polysiloxane having a siloxane constituent unit while making it possible to improve safety and reduce environmental burden. The above-mentioned problem is solved by a method comprising a polymerization step of polymerizing a silane-based compound and a diol compound in the presence of a transesterification catalyst including at least a phosphorus compound, in which the silane-based compound is selected from a specific diaryloxysilane compound, a specific dialkoxysilane compound, and a specific silicon compound, and in the polymerization step, a polysiloxane having a siloxane constituent unit represented by any of formula (1-1) to formula (1-4) is produced. (In the formulas, R1-R10, R30-R33, Z1, Z2, J1, K1, A1, A2, L1, L2, and X are as described in the description of the present application.Type: ApplicationFiled: September 22, 2021Publication date: November 9, 2023Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Hisato AKIMOTO, Kohei KAMATANI, Daisuke TAGUCHI, Kazuyoshi UERA
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Publication number: 20230340177Abstract: To provide a composition containing a siloxane block-containing diol compound that is easy to manufacture industrially.Type: ApplicationFiled: September 22, 2021Publication date: October 26, 2023Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Kazuyoshi UERA, Kohei KAMATANI, Hisato AKIMOTO, Daisuke TAGUCHI
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Publication number: 20230331925Abstract: The problem of the present invention is to provide: a thermoplastic resin having excellent heat resistance and excellent flame retardancy and having a siloxane constituent unit, particularly a thermoplastic resin suitable for optical applications; a composition containing the thermoplastic resin; and others. The problem is solved by a thermoplastic resin containing a structural unit (A) represented by general formula (I).Type: ApplicationFiled: September 22, 2021Publication date: October 19, 2023Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Daisuke TAGUCHI, Kohei KAMATANI, Hisato AKIMOTO, Kazuyoshi UERA
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Publication number: 20230212331Abstract: To provide a method for producing a fluorinated polymer which does not require an emulsifier as an essential component while an aqueous medium with little environmental burden is used.Type: ApplicationFiled: March 10, 2023Publication date: July 6, 2023Applicant: AGC Inc.Inventors: Kosuke SHIBASAKI, Shintaro FUKUNAGA, Daisuke TAGUCHI
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Publication number: 20220297261Abstract: An underwater polishing system according to the present disclosure includes a tank, a robot, and a polishing machine. In a state where a workpiece held by an arm portion of the robot, at least a part of a second rotating roller and at least a part of a polishing tool of the polishing machine are immersed in a liquid stored in the tank, the held workpiece is polished by operating the arm portion of the robot and pressing the held workpiece against the polishing tool.Type: ApplicationFiled: March 10, 2022Publication date: September 22, 2022Inventors: Keisuke OGAWA, Koji TSUKADA, Daisuke TAGUCHI
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Patent number: 10882936Abstract: To provide a copolymer capable of producing a molded article excellent in strength at a high temperature. A copolymer comprising ethylene units, tetrafluoroethylene units and other monomer units, wherein to the sum of ethylene units and tetrafluoroethylene units, the ethylene units are from 49 to 40 mol % and the tetrafluoroethylene units are from 51 to 60 mol %; to all units in the copolymer, other monomer units are from 2.6 to 6.0 mol %; the melting point is at least 230° C.; and the melt flow rate is from 1 to 15 g/10 min.Type: GrantFiled: April 23, 2018Date of Patent: January 5, 2021Assignee: AGC Inc.Inventors: Shigeru Aida, Daisuke Taguchi
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Patent number: 10807776Abstract: To provide a resin film which comprises an ethylene/tetrafluoroethylene copolymer and which is to be used as, for example, a rubber plug lamination film to prevent breakage at the time of producing a laminated rubber plug. The resin film comprises an ethylene/tetrafluoroethylene copolymer and is characterized in that the product of the value of the endothermic peak height ?H (mW/mg) obtained by its DSC-analysis and the haze (%) measured at a thickness of 100 ?m, is from 0.1 to 0.2 (mW/mg·%).Type: GrantFiled: March 1, 2018Date of Patent: October 20, 2020Assignee: AGC Inc.Inventors: Daisuke Taguchi, Wataru Kasai, Yoshiaki Higuchi
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Publication number: 20200238277Abstract: To provide a microchannel chip which is a chip provided internally with an inner space that can be used as a flow channel, and which is excellent in drug non-absorption properties of the channel. The microchannel chip has formed therein a plurality of openings H1, H2 and an inner space S connecting the plurality of openings H1, H2, and at least a part of the surface in contact with the inner space S is made of a fluorinated copolymer containing from 5 to 99 mol % of units based on CF2?CFX (X is a fluorine atom, a chlorine atom or CF3).Type: ApplicationFiled: March 4, 2020Publication date: July 30, 2020Applicant: AGC Inc.Inventors: Masahiro OHKURA, Daisuke TAGUCHI, Masamichi IDE, Naoki MATSUOKA
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Publication number: 20180237566Abstract: To provide a copolymer capable of producing a molded article excellent in strength at a high temperature. A copolymer comprising ethylene units, tetrafluoroethylene units and other monomer units, wherein to the sum of ethylene units and tetrafluoroethylene units, the ethylene units are from 49 to 40 mol % and the tetrafluoroethylene units are from 51 to 60 mol %; to all units in the copolymer, other monomer units are from 2.6 to 6.0 mol %; the melting point is at least 230° C.; and the melt flow rate is from 1 to 15 g/10 min.Type: ApplicationFiled: April 23, 2018Publication date: August 23, 2018Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Shigeru AIDA, Daisuke TAGUCHI
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Publication number: 20180186914Abstract: To provide a resin film which comprises an ethylene/tetrafluoroethylene copolymer and which is to be used as, for example, a rubber plug lamination film to prevent breakage at the time of producing a laminated rubber plug. The resin film comprises an ethylene/tetrafluoroethylene copolymer and is characterized in that the product of the value of the endothermic peak height ?H (mW/mg) obtained by its DSC-analysis and the haze (%) measured at a thickness of 100 ?m, is from 0.1 to 0.2 (mW/mg·%).Type: ApplicationFiled: March 1, 2018Publication date: July 5, 2018Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Daisuke TAGUCHI, Wataru Kasai, Yoshiaki Higuchi
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Patent number: 9725542Abstract: Provided is an effective process for producing a fluorinated polymer excellent in adhesion, by using a polymerization medium having a low ozone layer destruction potential. The process includes polymerizing a monomer mixture comprising a fluorinated monomer and a polar functional group containing monomer (excluding one having a fluorine atom) in a polymerization medium that contains a medium compound represented by CmH2m+1?xFx—O—CnH2n+1?yFy, m is an integer of from 1 to 6, n is an integer of from 1 to 6, x is from 0 to (2m+1), y is from 0 to 2n, and (x+y) is at least 1), and wherein a solution obtained by dissolving the polar functional group-containing monomer in the polymerization medium is continuously or intermittently added to a polymerization reaction system.Type: GrantFiled: November 14, 2016Date of Patent: August 8, 2017Assignee: Asahi Glass Company, LimitedInventors: Shigeru Aida, Daisuke Taguchi
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Patent number: 9711257Abstract: To provide a fluorinated elastomer composition which is excellent in flexibility, heat resistance and flame retardance, and a molded product, cross-linked product and covered electric wire, using such a fluorinated elastomer composition. A fluorinated elastomer composition comprising a tetrafluoroethylene/propylene copolymer (a), an ethylene/tetrafluoroethylene copolymer (b), an ethylene copolymer (c) containing epoxy groups and a flame retardant (d), wherein the mass ratio [(a)/(b)] of (a) to (b) is from 70/30 to 40/60, the mass ratio [(b)/(c)] of (b) to (c) is from 100/0.1 to 100/10, and the content of (d) is from 0.1 to 30 parts by mass per 100 parts by mass of the total content of (a), (b) and (c).Type: GrantFiled: March 15, 2016Date of Patent: July 18, 2017Assignee: Asahi Glass Company, LimitedInventors: Ken Iruya, Satoko Yasuda, Daisuke Taguchi, Yasuhiko Matsuoka
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Patent number: 9701828Abstract: To provide a fluorinated elastomer composition which is excellent in heat discoloration resistance and moldability, and a molded product, cross-linked product and covered electric wire, using such a fluorinated elastomer composition. A fluorinated elastomer composition comprising a fluorinated rubber (a) and a fluorinated copolymer (b), wherein the fluorinated copolymer (b) has units (A) derived from tetrafluoroethylene and units (B) derived from ethylene in a molar ratio [(A)/(B)] of the units (A) to the units (B) of from 25/75 to 80/20; the fluorinated copolymer (b) has a crystallization temperature of from 100 to 210° C. and a melt flow rate of from 0.1 to 1,000 g/10 min.; and the mass ratio [(a)/(b)] of the fluorinated rubber (a) to the fluorinated copolymer (b) is from 80/20 to 20/80.Type: GrantFiled: March 15, 2016Date of Patent: July 11, 2017Assignee: Asahi Glass Company, LimitedInventors: Daisuke Taguchi, Satoko Yasuda, Takashi Sato
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Publication number: 20170152332Abstract: To provide a fluorinated elastomer from which it is possible to produce a crosslinked article excellent in cold resistance and excellent in mechanical strength; a fluorinated elastomer composition containing said elastomer; and a fluorinated elastomer crosslinked article obtained by molding and crosslinking said composition. The fluorinated elastomer comprises units (A) based on vinylidene fluoride and units (B) based on a perfluorovinyl ether represented by CF2?CF—O—Rf, and has iodine atoms at main chain terminals, wherein the molar ratio [(A)/(B)] of units (A) to units (B) is from 88/12 to 50/50. In the formula, Rf is a C1-20 perfluoroalkyl group having a branched structure, or a C2-20 perfluoroalkyl group having a branched structure and also having an etheric oxygen atom between carbon atoms.Type: ApplicationFiled: February 14, 2017Publication date: June 1, 2017Applicant: Asahi Glass Company, LimitedInventors: Shigeru AIDA, Daisuke TAGUCHI, Keisuke YAGI
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Publication number: 20170088651Abstract: To provide a powder coating material to form a coating film excellent in adhesion to a metal substrate and excellent in heat resistance, and an ethylene/tetrafluoroethylene copolymer contained therein. An ethylene/tetrafluoroethylene copolymer in which the content of chlorine atoms covalently bonded to any carbon atoms in the copolymer is from 100 to 500 mass ppm. A method for producing the ethylene/tetrafluoroethylene copolymer in which all or some of the chlorine atoms are introduced by using a chain transfer agent having a chlorine atom. A powder coating material comprising the ethylene/tetrafluoroethylene copolymer. A molded article having a coating film formed by the powder coating material, on a surface of a metal substrate.Type: ApplicationFiled: December 12, 2016Publication date: March 30, 2017Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Shigeru AIDA, Daisuke Taguchi
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Publication number: 20170058065Abstract: To provide an effective process for producing a fluorinated polymer excellent in adhesion, by using a polymerization medium having a low ozone layer destruction potential. A process for producing a fluorinated polymer, which comprises polymerizing a monomer mixture comprising a fluorinated monomer and a polar functional group-containing monomer (excluding one having a fluorine atom) in a polymerization medium, wherein the polymerization medium contains a medium compound represented by CmH2m+1?xFx—O—CnH2n+1?yFy (wherein m is an integer of from 1 to 6, n is an integer of from 1 to 6, x is from 0 to (2m+1), y is from 0 to 2n, and (x+y) is at least 1), and wherein a solution obtained by dissolving the polar functional group-containing monomer in the polymerization medium is continuously or intermittently added to a polymerization reaction system.Type: ApplicationFiled: November 14, 2016Publication date: March 2, 2017Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Shigeru AIDA, Daisuke Taguchi
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Publication number: 20160339677Abstract: Provided is a fluororesin laminate in which a fluorinated copolymer layer is firmly adhered to a vinyl chloride type copolymer layer, and its production process. A fluororesin laminate comprising a layer (I) containing a fluorinated copolymer (1) having a crystallization temperature of from 100 to 220° C., a layer (II) made of an epoxy group-containing ethylene type copolymer or its composition (2) and a layer (III) made of a vinyl chloride type copolymer or its composition (3), which layers are sequentially laminated.Type: ApplicationFiled: August 3, 2016Publication date: November 24, 2016Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Daisuke Taguchi, Shigeru Aida, Toru Sasaki