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).
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Publication number: 20070203366Abstract: 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: ApplicationFiled: May 1, 2007Publication date: August 30, 2007Applicant: ASAHI GLASS COMPANY LIMITEDInventors: Daisuke SHIRAKAWA, Takashi Okazoe, Kazuya Oharu, Shu-zhong Wang, Koichi Murata, Kengo Kawahara
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Patent number: 7230140Abstract: 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: GrantFiled: April 18, 2005Date of Patent: June 12, 2007Assignee: Asahi Glass Company, LimitedInventors: Daisuke Shirakawa, Takashi Okazoe, Kazuya Oharu, Shu-zhong Wang, Koichi Murata, Kengo Kawahara
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Publication number: 20070117915Abstract: 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: ApplicationFiled: January 24, 2007Publication date: May 24, 2007Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Hiroshi FUNAKI, Ryuji Seki, Kazuya Oharu, Hiroki Kamiya
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Publication number: 20070083064Abstract: 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: ApplicationFiled: December 15, 2006Publication date: April 12, 2007Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Kazuya OHARU, Takashi Okazoe, Eisuke Murotani, Kunio Watanabe, Masahiro Ito
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Patent number: 7193118Abstract: 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: GrantFiled: December 5, 2005Date of Patent: March 20, 2007Assignee: Asahi Glass Company, LimitedInventors: Hidekazu Okamoto, Masazumi Nagai, Kazuya Oharu
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Patent number: 7193119Abstract: 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: GrantFiled: February 7, 2006Date of Patent: March 20, 2007Assignee: Asahi Glass Company, LimitedInventors: Masazumi Nagai, Hidekazu Okamoto, Kazuya Oharu
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Publication number: 20060252910Abstract: 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: ApplicationFiled: July 11, 2006Publication date: November 9, 2006Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Daisuke Shirakawa, Kazuya Oharu, Takashi Okazoe
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Publication number: 20060199979Abstract: 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: ApplicationFiled: April 26, 2006Publication date: September 7, 2006Applicant: ASAHI GLASS COMPANY LIMITEDInventors: Masao Iwaya, Kazuya Oharu, Hirokazu Takagi, Hidekazu Okamoto
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Publication number: 20060199898Abstract: 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: ApplicationFiled: December 2, 2005Publication date: September 7, 2006Applicant: Asahi Glass Company, LimitedInventors: Hiroshi Funaki, Ryuji Seki, Kazuya Oharu, Hiroki Kamiya
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Patent number: 7102031Abstract: 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: GrantFiled: June 10, 2004Date of Patent: September 5, 2006Assignee: Asahi Glass Company, LimitedInventors: Masao Iwaya, Hidekazu Okamoto, Kazuya Oharu
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Publication number: 20060128915Abstract: 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: ApplicationFiled: February 7, 2006Publication date: June 15, 2006Applicant: Asahi Glass Company, LimitedInventors: Masazumi Nagai, Hidekazu Okamoto, Kazuya Oharu
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Publication number: 20060094908Abstract: 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: ApplicationFiled: December 5, 2005Publication date: May 4, 2006Applicant: Asahi Glass Company, LimitedInventors: Hidekazu Okamoto, Masazumi Nagai, Kazuya Oharu
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Patent number: 7009018Abstract: 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: GrantFiled: March 16, 2005Date of Patent: March 7, 2006Assignee: Asahi Glass Company, LimitedInventors: Kazuya Oharu, Hidekazu Okamoto, Shin Tatematsu, Shigeki Kobayashi, Shinya Higuchi, Masataka Arai, Hiroki Nagai
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Publication number: 20060030733Abstract: 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: ApplicationFiled: August 19, 2005Publication date: February 9, 2006Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Shu-Zhong Wang, Takashi Okazoe, Eisuke Murotani, Kunio Watanabe, Daisuke Shirakawa, Kazuya Oharu
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Publication number: 20050288528Abstract: 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: ApplicationFiled: June 16, 2005Publication date: December 29, 2005Applicant: ASAHI GLASS COMPANY LIMITEDInventors: Takashi Okazoe, Kunio Watanabe, Masahiro Ito, Eisuke Murotani, Kazuya Oharu, Shu-zhong Wang, Taiki Hoshino, Kimiaki Kashiwagi
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Publication number: 20050228200Abstract: 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: ApplicationFiled: June 13, 2005Publication date: October 13, 2005Applicant: ASAHI GLASS COMPANY LIMITEDInventors: Kazuya Oharu, Hirokazu Takagi, Roderic Simpson
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Publication number: 20050197408Abstract: 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: ApplicationFiled: April 18, 2005Publication date: September 8, 2005Applicant: ASAHI GLASS COMPANY LIMITEDInventors: Daisuke Shirakawa, Takashi Okazoe, Kazuya Oharu, Shu-zhong Wang, Koichi Murata, Kengo Kawahara
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Publication number: 20050187363Abstract: 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: ApplicationFiled: March 16, 2005Publication date: August 25, 2005Applicant: Asahi Glass Company, LimitedInventors: Kazuya Oharu, Hidekazu Okamoto, Shin Tatematsu, Shigeki Kobayashi, Shinya Higuchi, Masataka Arai, Hiroki Nagai
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Publication number: 20050182217Abstract: 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: ApplicationFiled: March 15, 2005Publication date: August 18, 2005Applicant: ASAHI GLASS COMPANY LIMITEDInventors: Kimiaki Kashiwagi, Gen Ogawa, Takashi Okazoe, Kunio Watanabe, Eisuke Murotani, Kazuya Oharu
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Publication number: 20050147897Abstract: 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: ApplicationFiled: February 22, 2005Publication date: July 7, 2005Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Ikuo Matsukura, Hidekazu Okamoto, Eisuke Murotani, Kazuya Oharu