Patents by Inventor Kazuya Oharu

Kazuya Oharu 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).

  • Publication number: 20070203366
    Abstract: A novel perfluoropolyether derivative which is less likely to undergo decomposition, which is free from a problem of deterioration during its use, and which is useful as a lubricating oil or a coating agent, is provided. A compound represented by the following formula (1): HO—(CH2CH2O)r•(CH2CH(OH)CH2O)p—CH2CF2O(CF2CF2O)mCF2CH2O—(CH2CH(OH)CH2O)q•(CH2CH2O)s—H??Formula (1) wherein m represents an integer of from 3 to 200, and each of p, q, r and s which are independent of one another, represents an integer of from 0 to 100, provided that when each of p, q, r and s which are independent of one another, is an integer of at least 1, the arrangement of —(CH2CH2O)— and —(CH2CH(OH)CH2O)— units is not particularly limited, and when one of r and p is an integer of at least 2 and the other is an integer of at least 1, or when one of q and s is an integer of at least 2 and the other is an integer of at least 1, these units may be arranged in a block form or at random.
    Type: Application
    Filed: May 1, 2007
    Publication date: August 30, 2007
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Daisuke SHIRAKAWA, Takashi Okazoe, Kazuya Oharu, Shu-zhong Wang, Koichi Murata, Kengo Kawahara
  • Patent number: 7230140
    Abstract: A novel perfluoropolyether derivative which is less likely to undergo decomposition, which is free from a problem of deterioration during its use, and which is useful as a lubricating oil or a coating agent, is provided. A compound represented by the following formula (1): HO—(CH2CH2O)r.(CH2CH(OH)CH2O)p—CH2CF2O(CF2CF2O)mCF2CH2O——(CH2CH(OH)CH2O)q.(CH2CH2O)s—H??Formula (1) wherein m represents an integer of from 3 to 200, and each of p, q, r and s which are independent of one another, represents an integer of from 0 to 100, provided that when each of p, q, r and s which are independent of one another, is an integer of at least 1, the arrangement of —(CH2CH2O)— and —(CH2CH(OH)CH2O)— units is not particularly limited, and when one of r and p is an integer of at least 2 and the other is an integer of at least 1, or when one of q and s is an integer of at least 2 and the other is an integer of at least 1, these units may be arranged in a block form or at random.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: June 12, 2007
    Assignee: Asahi Glass Company, Limited
    Inventors: Daisuke Shirakawa, Takashi Okazoe, Kazuya Oharu, Shu-zhong Wang, Koichi Murata, Kengo Kawahara
  • Publication number: 20070117915
    Abstract: To provide a process for producing a fluoropolymer latex, which is excellent in the productivity of the fluoropolymer latex, and which can produce a fluoropolymer latex excellent in the storage stability, and to provide such a fluoropolymer latex. A process for producing a fluoropolymer latex, which comprises emulsion polymerizing a fluoromonomer in an aqueous medium containing from 0.001 to 10.0 mass % of a fluorine-containing emulsifier represented by the formula (1): F(CF2)nO(CF2CF2O)mCF2COOA (wherein A is a hydrogen atom, an alkali metal or NH4, n is an integer of from 3 to 10, and m is 0 or an integer of from 1 to 3) to obtain the fluoropolymer latex.
    Type: Application
    Filed: January 24, 2007
    Publication date: May 24, 2007
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Hiroshi FUNAKI, Ryuji Seki, Kazuya Oharu, Hiroki Kamiya
  • Publication number: 20070083064
    Abstract: A compound represented by the formula AF(—COF)n, provided that AF and n have the following meanings. AF: a fluorinated adamantane residue which is an n-valent group having an n number of hydrogen atoms removed from adamantane (provided that when n is at least 2, the removed hydrogen atoms are hydrogen atoms bonded to different carbon atoms), wherein at least one of the remaining hydrogen atoms is substituted by a fluorine atom, and the remaining hydrogen atoms may be substituted by a C1-6 alkyl group or fluoroalkyl group, and n: an integer of from 1 to 4, provided the when n is 1, AF has at least one hydrogen atom.
    Type: Application
    Filed: December 15, 2006
    Publication date: April 12, 2007
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Kazuya OHARU, Takashi Okazoe, Eisuke Murotani, Kunio Watanabe, Masahiro Ito
  • Patent number: 7193119
    Abstract: To provide a process for producing a fluorinated alkyl ether, whereby a sufficient reaction rate can be attained even under mild reaction conditions, and a post-process such as distillation after the reaction can be efficiently carried out. A process for producing a fluorinated alkyl ether, which comprises introducing an aprotic polar solvent, a fluorinated ether, a catalyst, a fluorinated alkyl alcohol and a fluorinated olefin into a reactor, and then, reacting the fluorinated alkyl alcohol with the fluorinated olefin, characterized in that the ratio of the two components of the aprotic polar solvent and the fluorinated ether introduced into the reactor is the aprotic polar solvent/the fluorinated ether=5/95 to 80/20 by mass ratio.
    Type: Grant
    Filed: February 7, 2006
    Date of Patent: March 20, 2007
    Assignee: Asahi Glass Company, Limited
    Inventors: Masazumi Nagai, Hidekazu Okamoto, Kazuya Oharu
  • Patent number: 7193118
    Abstract: A method for producing a fluoroalkyl ether, which comprises reacting a fluoroalkyl alcohol with a fluorinated olefin in the presence of a solvent and a catalyst, wherein the fluoroalkyl alcohol and the fluorinated olefin are continuously supplied into a reactor, a reaction product containing the fluoroalkyl ether is continuously withdrawn from the reactor, and the reaction is carried out while the concentration of the fluoroalkyl alcohol present in the reactor is maintained to be at most 7 mass % based on the total organic component present in the reactor. According to the present invention, a fluoroalkyl ether having a high purity can be produced in an industrial scale and at a high reaction rate.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: March 20, 2007
    Assignee: Asahi Glass Company, Limited
    Inventors: Hidekazu Okamoto, Masazumi Nagai, Kazuya Oharu
  • Publication number: 20060252910
    Abstract: It is to provide a compound which has a low vapor pressure and low viscosity, which is less problematic in deterioration during its use and which is useful as e.g. a lubricant, a surface modifier or a surfactant. A fluoropolyether compound represented by the formula (X—)xY(-Z)z, wherein X is a group represented by the formula HO—(CH2CH2O)a.(CH2CH(OH) CH2O)b—(CH2)c—CF2O(CF2CF2O)d— (wherein “a” is an integer of from 0 to 100, b is an integer of from 0 to 100, c is an integer of from 1 to 100, and d is an integer of from 1 to 200), Z is a group represented by the formula RFO(CF2CF2O)g— (wherein RF is e.g. a C120 perfluoroalkyl group having an etheric oxygen atom inserted between carbon-carbon atoms, and g is an integer of from 3 to 200), Y is e.g. a (x+z) valent perfluorinated saturated hydrocarbon group, x is an integer of at least 2, z is an integer of at least 0, and (x+z) is an integer of from 3 to 20.
    Type: Application
    Filed: July 11, 2006
    Publication date: November 9, 2006
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Daisuke Shirakawa, Kazuya Oharu, Takashi Okazoe
  • Publication number: 20060199898
    Abstract: A fluorinated elastomer latex containing an aqueous medium, a fluorinated elastomer dispersed in the aqueous medium in an amount of from 10 to 60 mass % and a fluorinated emulsifier represented by the formula (1): C2F5O(CF2CF2O)mCF2COOA (wherein A is a hydrogen atom, an alkali metal or NH4, and m is an integer of from 1 to 3), which employs no perfluorooctanoate emulsifier and which is excellent in dispersion stability of the fluorinated elastomer. A fluorinated elastomer obtained by coagulating the fluorinated elastomer latex has a low content of an emulsifier, and a fluororubber molded product obtained by crosslinking the fluorinated elastomer is excellent in physical properties.
    Type: Application
    Filed: December 2, 2005
    Publication date: September 7, 2006
    Applicant: Asahi Glass Company, Limited
    Inventors: Hiroshi Funaki, Ryuji Seki, Kazuya Oharu, Hiroki Kamiya
  • Publication number: 20060199979
    Abstract: A novel fluorinated ether compound useful as an inert medium is provided. The compound is represented by the following formula (1) such as the compound represented by the following formula (1a) or the compound represented by the following formula (1b): RF1OCFRF2CFRF2ORF1??(1) F(CF2)4OCF(CF3)CF(CF3)O(CF2)4F??(1a) F(CF2)6OCF(CF3)CF(CF3)O(CF2)6F??(1b) wherein the symbols have the following meanings: RF1 is a C4-7 linear perfluoroalkyl group; and RF2 is a fluorine atom or a trifluoromethyl group.
    Type: Application
    Filed: April 26, 2006
    Publication date: September 7, 2006
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Masao Iwaya, Kazuya Oharu, Hirokazu Takagi, Hidekazu Okamoto
  • Patent number: 7102031
    Abstract: It is an object to obtain from a mixture of a specific diene compound (1) and a compound (2) with the same molecular weight and molecular formula hard to separate by distillation, the diene compound (1) in high purity without using any special reagent or complicated technique. Namely, the present invention provides a method of inducing the Claisen rearrangement reaction of the compound (2) in a mixture containing CR1R2?CR3CFR4CR5R6OCR7?CR8R9 (1) and CFR1R2CR3?CR4CR5R6OCR7?CR8R9 (2), and separating the diene compound (1) from a Claisen rearrangement reaction product; or converting the Claisen rearrangement reaction product into a derivative and then separating the diene compound (1) from the derivative of the Claisen rearrangement reaction product. Wherein, R1 to R9 each represent a fluorine atom or the like.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: September 5, 2006
    Assignee: Asahi Glass Company, Limited
    Inventors: Masao Iwaya, Hidekazu Okamoto, Kazuya Oharu
  • Publication number: 20060128915
    Abstract: To provide a process for producing a fluorinated alkyl ether, whereby a sufficient reaction rate can be attained even under mild reaction conditions, and a post-process such as distillation after the reaction can be efficiently carried out. A process for producing a fluorinated alkyl ether, which comprises introducing an aprotic polar solvent, a fluorinated ether, a catalyst, a fluorinated alkyl alcohol and a fluorinated olefin into a reactor, and then, reacting the fluorinated alkyl alcohol with the fluorinated olefin, characterized in that the ratio of the two components of the aprotic polar solvent and the fluorinated ether introduced into the reactor is the aprotic polar solvent/the fluorinated ether=5/95 to 80/20 by mass ratio.
    Type: Application
    Filed: February 7, 2006
    Publication date: June 15, 2006
    Applicant: Asahi Glass Company, Limited
    Inventors: Masazumi Nagai, Hidekazu Okamoto, Kazuya Oharu
  • Publication number: 20060094908
    Abstract: A method for producing a fluoroalkyl ether, which comprises reacting a fluoroalkyl alcohol with a fluorinated olefin in the presence of a solvent and a catalyst, wherein the fluoroalkyl alcohol and the fluorinated olefin are continuously supplied into a reactor, a reaction product containing the fluoroalkyl ether is continuously withdrawn from the reactor, and the reaction is carried out while the concentration of the fluoroalkyl alcohol present in the reactor is maintained to be at most 7 mass % based on the total organic component present in the reactor. According to the present invention, a fluoroalkyl ether having a high purity can be produced in an industrial scale and at a high reaction rate.
    Type: Application
    Filed: December 5, 2005
    Publication date: May 4, 2006
    Applicant: Asahi Glass Company, Limited
    Inventors: Hidekazu Okamoto, Masazumi Nagai, Kazuya Oharu
  • Patent number: 7009018
    Abstract: Provided is a tetrafluoroethylene copolymer consisting of a unit based on tetrafluoroethylene and a unit based on a monomer represented by CF2?CFORf1Rf2 (where Rf1 is a polyfluoroalkylene group which may contain an etheric oxygen atom and Rf2 is a polyfluorocycloalkyl group which may contain an etheric oxygen atom), wherein a content of the latter is from 0.005 to 0.5% by mass. The tetrafluoroethylene copolymer is excellent both in paste extrudability and in heat resistance, has characteristics such as excellent transparency of a molded product, and is suitably applicable to paste extrusion and compression molding.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: March 7, 2006
    Assignee: Asahi Glass Company, Limited
    Inventors: Kazuya Oharu, Hidekazu Okamoto, Shin Tatematsu, Shigeki Kobayashi, Shinya Higuchi, Masataka Arai, Hiroki Nagai
  • Publication number: 20060030733
    Abstract: The present invention provides a process for producing compounds useful as raw materials for various fluororesins in high yields in few steps from inexpensive and readily available starting materials. The following compound (1) and the following compound (2) are reacted to form the following compound (3), then the compound (3) is fluorinated in a liquid phase to form the following compound (4), and the ester bonds in the compound (4) are dissociated to form the compound (5), or the compound (5) and the compound (6). HOCH2-Q-O—(CH2)3—OH ??(1), CRBCOX ??(2), RBCOOCH2-Q-O—(CH2)3—OCORB ??(3), RBFCOOCF2-QF-O—(CF2)3—OCORBF ??(4), FCO-QF-O—(CF2)2—COF ??(5), RBFCOF ??(6).
    Type: Application
    Filed: August 19, 2005
    Publication date: February 9, 2006
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Shu-Zhong Wang, Takashi Okazoe, Eisuke Murotani, Kunio Watanabe, Daisuke Shirakawa, Kazuya Oharu
  • Publication number: 20050288528
    Abstract: The present invention provides a process A1 for producing a compound (5A), which comprises fluorinating a compound (3A-1) by liquid phase fluorination to a compound (4A-1), followed by a decomposition reaction of an ester bond; a process A2 for producing a compound (5A), which comprises fluorinating a compound (3A-2) by liquid phase fluorination to a compound (4A-2), followed by a decomposition reaction of an ester bond; and a process B for producing a compound (5B), which comprises fluorinating a compound (3B) by liquid phase fluorination to a compound (4B), followed by hydrolysis or alcoholysis. Further, the present invention provides a compound (5A) wherein n is 2 to 4, and a compound (5B) wherein n is 3 or 4.
    Type: Application
    Filed: June 16, 2005
    Publication date: December 29, 2005
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Takashi Okazoe, Kunio Watanabe, Masahiro Ito, Eisuke Murotani, Kazuya Oharu, Shu-zhong Wang, Taiki Hoshino, Kimiaki Kashiwagi
  • Publication number: 20050228200
    Abstract: This invention provides a novel fluorinated ether compound represented by the following formula (I), which has a short atmospheric lifetime and which is stable under use conditions. The fluorinated ether compound of the invention is useful as a fluorinated inert medium or the like. Rf(CH2)nO(CH2)nRf ??(I) wherein Rf is a C1-10 fluorinated monovalent saturated organic group, and n is 3 or 4.
    Type: Application
    Filed: June 13, 2005
    Publication date: October 13, 2005
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Kazuya Oharu, Hirokazu Takagi, Roderic Simpson
  • Publication number: 20050197408
    Abstract: A novel perfluoropolyether derivative which is less likely to undergo decomposition, which is free from a problem of deterioration during its use, and which is useful as a lubricating oil or a coating agent, is provided. A compound represented by the following formula (1): HO—(CH2CH2O)r.(CH2CH (OH)CH2O)p—CH2CF2O(CF2CF2O)mCF2CH2O——(CH2CH(OH)CH2O)q.(CH2CH2O)s—H??Formula (1) wherein m represents an integer of from 3 to 200, and each of p, q, r and s which are independent of one another, represents an integer of from 0 to 100, provided that when each of p, q, r and s which are independent of one another, is an integer of at least 1, the arrangement of —(CH2CH2O)— and —(CH2CH(OH)CH2O)— units is not particularly limited, and when one of r and p is an integer of at least 2 and the other is an integer of at least 1, or when one of q and s is an integer of at least 2 and the other is an integer of at least 1, these units may be arranged in a block form or at random.
    Type: Application
    Filed: April 18, 2005
    Publication date: September 8, 2005
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Daisuke Shirakawa, Takashi Okazoe, Kazuya Oharu, Shu-zhong Wang, Koichi Murata, Kengo Kawahara
  • Publication number: 20050187363
    Abstract: Provided is a tetrafluoroethylene copolymer consisting of a unit based on tetrafluoroethylene and a unit based on a monomer represented by CF2?CFORf1Rf2 (where Rf1 is a polyfluoroalkylene group which may contain an etheric oxygen atom and Rf2 is a polyfluorocycloalkyl group which may contain an etheric oxygen atom), wherein a content of the latter is from 0.005 to 0.5% by mass. The tetrafluoroethylene copolymer is excellent both in paste extrudability and in heat resistance, has characteristics such as excellent transparency of a molded product, and is suitably applicable to paste extrusion and compression molding.
    Type: Application
    Filed: March 16, 2005
    Publication date: August 25, 2005
    Applicant: Asahi Glass Company, Limited
    Inventors: Kazuya Oharu, Hidekazu Okamoto, Shin Tatematsu, Shigeki Kobayashi, Shinya Higuchi, Masataka Arai, Hiroki Nagai
  • Publication number: 20050182217
    Abstract: A novel fluoropolymer which can be an optical resin material having a low refractive index and excellent heat resistance, and a novel fluorinated diene compound having two unsaturated bonds, capable of presenting such a fluoropolymer, are presented. Further, by virtue of the low refractive index and excellent heat resistance, the polymer presents a high performance optical transmitter and a plastic optical fiber. A fluorinated diene compound represented by CF2?CFCF(ORf)CF2OCF?CF2 (wherein Rf is a perfluoroalkyl group such as a trifluoromethyl group), and a fluoropolymer thereof. Further, an optical transmitter made by using such a fluoropolymer, and a plastic optical fiber having a core comprising such a fluoropolymer and a fluorinated low molecular compound contained therein as a refractive index-increasing agent.
    Type: Application
    Filed: March 15, 2005
    Publication date: August 18, 2005
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Kimiaki Kashiwagi, Gen Ogawa, Takashi Okazoe, Kunio Watanabe, Eisuke Murotani, Kazuya Oharu
  • Publication number: 20050147897
    Abstract: A pellicle which is excellent in transmittance and durability against short wavelength light, and which can be used for photolithography by using e.g. a KrF excimer laser, is provided. A pellicle for exposure to a light having a wavelength of at most 200 nm, which comprises a frame and a pellicle membrane bonded to the frame by means of an adhesive, wherein the pellicle membrane and/or the adhesive comprises a polymer containing repeating units represented by the following formula (1): wherein Q represents a C1-3 polyfluoroalkylene group having a linear structure, or a group having at least one atom selected from hydrogen atoms and fluorine atoms in such a polyfluoroalkylene group substituted by a substituent comprising a polyfluoroalkyl group which may contain an ethereal oxygen atom, or the like, and X represents a hydrogen atom, a fluorine atom or a C1-3 polyfluoroalkyl group which may contain an ethereal oxygen atom.
    Type: Application
    Filed: February 22, 2005
    Publication date: July 7, 2005
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Ikuo Matsukura, Hidekazu Okamoto, Eisuke Murotani, Kazuya Oharu