Patents by Inventor Masahiro Ohkura
Masahiro Ohkura 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: 20220195099Abstract: A method of producing a fluorine-containing compound is a method of producing a compound (30) having partial structure (3) by an insertion reaction of compound (20) into compound (10) that has partial structure (1), in the presence of an ionic catalyst formed from a specific monovalent anion and a counter cation. In the formulas, * represents a bonding site, and X1 and R1 to R4 each independently represents a hydrogen atom, a fluorine atom, a chlorine atom, or an organic group having a carbon number of 1 to 20 which may have a substituent.Type: ApplicationFiled: March 9, 2022Publication date: June 23, 2022Applicant: AGC Inc.Inventors: Masahiro OHKURA, Shun WATANUKI
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Patent number: 10961332Abstract: The present invention relates to a method of producing a polymer including: polymerizing a compound represented by the following formula (3); or copolymerizing the compound represented by the following formula (3) with a compound (6) having a reactive carbon-carbon double bond and differing from the compound represented by the following formula (3), in a presence of at least one compound selected from the group consisting of compounds represented by the following formula (1) and compounds represented by the following formula (2).Type: GrantFiled: September 9, 2019Date of Patent: March 30, 2021Assignee: AGC INC.Inventors: Masahiro Ohkura, Kenta Natsukawa
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Patent number: 10858466Abstract: A curable composition capable of being cured at a low temperature of from room temperature to 150° C. is provided. The curable composition comprises a fluorinated polymer containing at least three functional groups represented by the following formula (F) and at least one curing agent selected from the group consisting of an isocyanate-type curing agent, a blocked isocyanate-type curing agent and an amino resin-type curing agent: —Rf1COZ1??(F) (in the formula (1), Rf1 is a fluoroalkylene group, or a fluoroalkylene group with at least two carbon atoms having an etheric oxygen atom between carbon-carbon atoms, Z1 is NR1NR2H or NR3OR4, and R1, R2, R3 and R4 are each independently a hydrogen atom or an alkyl group.Type: GrantFiled: June 25, 2019Date of Patent: December 8, 2020Assignee: AGC Inc.Inventors: Masahiro Ohkura, Norihide Sugiyama, Takeshi Eriguchi
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Patent number: 10759887Abstract: An electric wire and coil covered with a cured product of a heat- or photo-curable fluorinated polymer and having high insulating properties and high productivity. An electric wire having a conductor wire and a covering layer covering the outer periphery of the conductor wire. The covering layer is made of a cured product of a curable composition which has a fluorinated polymer containing at least three functional groups represented by the following formula (F): —Rf1COZ1 (F). In formula (F), Rf1 is a single bond, a fluoroalkylene group, or a fluoroalkylene group with at least two carbon atoms having an etheric oxygen atom between carbon-carbon atoms, Z1 is NR1NR2H, NR3OR4 or OR5, and R1, R2, R3, R4 and R5 are each independently a hydrogen atom or an alkyl group.Type: GrantFiled: June 26, 2019Date of Patent: September 1, 2020Assignee: AGC Inc.Inventors: Masahiro Ohkura, Norihide Sugiyama
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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: 20190389983Abstract: The present invention relates to a method of producing a polymer including: polymerizing a compound represented by the following formula (3); or copolymerizing the compound represented by the following formula (3) with a compound (6) having a reactive carbon-carbon double bond and differing from the compound represented by the following formula (3), in a presence of at least one compound selected from the group consisting of compounds represented by the following formula (1) and compounds represented by the following formula (2).Type: ApplicationFiled: September 9, 2019Publication date: December 26, 2019Applicant: AGC INC.Inventors: Masahiro OHKURA, Kenta NATSUKAWA
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Publication number: 20190315896Abstract: To provide an electric wire and coil covered with a cured product of a heat- or photo-curable fluorinated polymer and having high insulating properties and high productivity. An electric wire comprising a conductor wire and a covering layer covering the outer periphery of the conductor wire, wherein the covering layer is made of a cured product of a curable composition comprising a fluorinated polymer containing at least three functional groups represented by the following formula (F): —Rf1COZ1??(F) (in the formula (F), Rf1 is a single bond, a fluoroalkylene group, or a fluoroalkylene group with at least two carbon atoms having an etheric oxygen atom between carbon-carbon atoms, Z1 is NR1NR2H, NR3OR4 or OR5, and R1, R2, R3, R4 and R5 are each independently a hydrogen atom or an alkyl group.Type: ApplicationFiled: June 26, 2019Publication date: October 17, 2019Applicant: AGC Inc.Inventors: Masahiro OHKURA, Norihide SUGIYAMA
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Publication number: 20190309111Abstract: A curable composition capable of being cured at a low temperature of from room temperature to 150° C. is provided. The curable composition comprises a fluorinated polymer containing at least three functional groups represented by the following formula (F) and at least one curing agent selected from the group consisting of an isocyanate-type curing agent, a blocked isocyanate-type curing agent and an amino resin-type curing agent: —Rf1COZ1 ??(F) (in the formula (1), Rf1 is a fluoroalkylene group, or a fluoroalkylene group with at least two carbon atoms having an etheric oxygen atom between carbon-carbon atoms, Z1 is NR1NR2H or NR3OR4, and R1, R2, R3 and R4 are each independently a hydrogen atom or an alkyl group.Type: ApplicationFiled: June 25, 2019Publication date: October 10, 2019Applicant: AGC Inc.Inventors: Masahiro OHKURA, Norihide SUGIYAMA, Takeshi ERIGUCHI
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Patent number: 10214619Abstract: To provide a process for producing a fluorinated crosslinked product which is excellent in stability and produces less HF. A process for producing a fluorinated crosslinked product, which comprises irradiating a fluorinated polymer having a unit represented by the following formula (1), with active energy rays having a wavelength of from 150 to 300 nm: wherein X1 and X2 are each independently a hydrogen atom or a fluorine atom, Rf1 is a fluoroalkylene group or a fluoroalkylene group having at least two carbon atoms and an etheric oxygen atom between carbon-carbon atoms, Q1 is a single bond or an etheric oxygen atom, and Z1 is OH, OR1 or NR2R3, wherein R1 is an alkyl group, and R2 and R3 are each independently a hydrogen atom or an alkyl group.Type: GrantFiled: June 8, 2016Date of Patent: February 26, 2019Assignee: AGC Inc.Inventors: Norihide Sugiyama, Ryujiro Yamasaki, Susumu Saito, Akihiko Asakawa, Masahiro Ohkura, Shinji Wada
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Patent number: 10196467Abstract: To provide a curable fluorinated polymer excellent in solubility in an alcohol, a method for its production and a cured product of the fluorinated polymer. A fluorinated polymer comprising units represented by the following formula (1), wherein in at least some of the units represented by the formula (1), Z1 is NR1NR2H or NR3OR4: in the formula (1), X1 and X2 are each independently a hydrogen atom or a fluorine atom, Q1 is a single bond or an etheric oxygen atom, Rf1 is a fluoroalkylene group, or a fluoroalkylene group with at least 2 carbon atoms, having an etheric oxygen atom between carbon-carbon atoms, Z1 is NR1NR2H, NR3OR4 or OR5, R1, R2, R3 and R4 are each independently a hydrogen atom or an alkyl group, and R5 is an alkyl group.Type: GrantFiled: February 7, 2018Date of Patent: February 5, 2019Assignee: AGC Inc.Inventors: Norihide Sugiyama, Masahiro Ohkura
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Publication number: 20180162974Abstract: To provide a curable fluorinated polymer excellent in solubility in an alcohol, a method for its production and a cured product of the fluorinated polymer. A fluorinated polymer comprising units represented by the following formula (1), wherein in at least some of the units represented by the formula (1), Z1 is NR1NR2H or NR3OR4: in the formula (1), X1 and X2 are each independently a hydrogen atom or a fluorine atom, Q1 is a single bond or an etheric oxygen atom, Rf1 is a fluoroalkylene group, or a fluoroalkylene group with at least 2 carbon atoms, having an etheric oxygen atom between carbon-carbon atoms, Z1 is NR1NR2H, NR3OR4 or OR5, R1, R2, R3 and R4 are each independently a hydrogen atom or an alkyl group, and R5 is an alkyl group.Type: ApplicationFiled: February 7, 2018Publication date: June 14, 2018Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Norihide SUGIYAMA, Masahiro Ohkura
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Publication number: 20160280865Abstract: To provide a process for producing a fluorinated crosslinked product which is excellent in stability and produces less HF. A process for producing a fluorinated crosslinked product, which comprises irradiating a fluorinated polymer having a unit represented by the following formula (1), with active energy rays having a wavelength of from 150 to 300 nm: wherein X1 and X2 are each independently a hydrogen atom or a fluorine atom, Rf1 is a fluoroalkylene group or a fluoroalkylene group having at least two carbon atoms and an etheric oxygen atom between carbon-carbon atoms, Q1 is a single bond or an etheric oxygen atom, and Z1 is OH, OR1 or NR2R3, wherein R1 is an alkyl group, and R2 and R3 are each independently a hydrogen atom or an alkyl group.Type: ApplicationFiled: June 8, 2016Publication date: September 29, 2016Applicant: Asahi Glass Company, LimitedInventors: Norihide SUGIYAMA, Ryujiro Yamasaki, Susumu Saito, Akihiko Asakawa, Masahiro Ohkura, Shinji Wada
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Publication number: 20150141604Abstract: To provide a curable fluorinated polymer which is excellent in curability, and a fluorinated polymer cured product which is excellent in heat resistance and chemical resistance and which exhibits excellent properties as an elastomer. A curable fluorinated polymer having constituent units (A) based on fluoromonoenes (a) and constituent units (B) based on a non-cyclopolymerizable fluorodiene (b), in which the content of polymerizable double bonds is from 0.01 to 0.5 mmol/g, and of which the intrinsic viscosity is from 0.1 to 1 dL/g, and a fluorinated polymer cured product obtained by curing the curable fluorinated polymer in the presence of an organic peroxide.Type: ApplicationFiled: January 30, 2015Publication date: May 21, 2015Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Norihide SUGIYAMA, Hiromasa YAMAMOTO, Akinobu KUNIMOTO, Masahiro OHKURA
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Patent number: 7847028Abstract: The present invention provides a curable composition which can yield a fluorinated cured product excellent in transparency, light resistance, heat resistance, and mechanical strength, and minimally damaged by stress concentration. The invention relates to a curable composition comprising a perfluoro polymer (a) containing a unit derived from a perfluorodiene having two polymerizable carbon-carbon double bonds, wherein two carbon atoms in one carbon-carbon double bond form the main chain, and the other carbon-carbon double bond forms a side chain; a perfluorocyclic monoene (b) having at least 8 carbon atoms, which has an alicyclic structure made of carbon atoms and optionally containing an oxygen atom, and one polymerizable carbon-carbon double bond, wherein at least one of two carbon atoms forming the carbon-carbon double bond is a carbon atom constituting the alicyclic structure; and a polymerization initiator (i).Type: GrantFiled: December 3, 2008Date of Patent: December 7, 2010Assignee: Asahi Glass Company, LimitedInventors: Norihide Sugiyama, Masahiro Ohkura
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Publication number: 20100240791Abstract: It is an object to provide a curable composition which has a high curing rate and is excellent in productivity, and from which a fluorinated cured product having excellent dimensional stability can be obtained by suppressing volume shrinkage by bubbling during the curing reaction, and a process for producing such a curable composition. A curable composition comprising a polymerizable compound having a polymerizable double bond, wherein the mass ratio of a polymerizable compound (P) having a molecular weight of at least 1,000 is at least 90 mass % to all polymerizable compounds in the curable composition, and the polymerizable compound (P) contains a fluoropolymer (X) having a molecular weight of at least 1,000 having specific repeating units.Type: ApplicationFiled: June 3, 2010Publication date: September 23, 2010Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Norihide SUGIYAMA, Masahiro Ohkura, Yoshitomi Morizawa
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Publication number: 20090118429Abstract: To provide a curable composition which provides a fluorinated cured product excellent in transparency, light resistance, heat resistance and mechanical strength and hardly damaged by stress concentration. A curable composition comprising a perfluoro polymer (a) containing a unit derived from a perfluorodiene having two polymerizable carbon-carbon double bonds, wherein two carbon atoms in one carbon-carbon double bond form the main chain, and the other carbon-carbon double bond forms a side chain; a perfluorocyclic monoene (b) having at least 8 carbon atoms, which has an alicyclic structure made of carbon atoms and optionally containing an oxygen atom, and one polymerizable carbon-carbon double bond, wherein at least one of two carbon atoms forming the carbon-carbon double bond is a carbon atom constituting the alicyclic structure; and a polymerization initiator (i).Type: ApplicationFiled: December 3, 2008Publication date: May 7, 2009Applicant: Asahi Glass Company, LimitedInventors: Norihide SUGIYAMA, Masahiro Ohkura