Patents by Inventor Kuniaki Okamoto
Kuniaki Okamoto 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: 9190695Abstract: The present invention provides a non-aqueous electrolytic solution including a methylenebissulfonate derivative and improving initial irreversible capacity and other characteristics of a battery such as cycle characteristics, electric capacity, and storage characteristics; a method for producing thereof; and a battery using the electrolytic solution. The non-aqueous electrolytic solution includes: (1) a non-aqueous solvent comprising a cyclic carbonate ester, a straight chained carbonate ester, and/or a cyclic carboxylic acid ester, (2) a lithium salt which may be dissolved in the non-aqueous solvent, as an electrolyte salt, and (3) a methylenebissulfonate derivative of formula [I]: The method includes steps of dissolving a lithium salt in a non-aqueous solvent, and then dissolving the methylenebissulfonate derivative. The non-aqueous electrolytic solution battery includes (i) the non-aqueous electrolytic solution above, (ii) a negative electrode, (iii) a positive electrode, and (iv) a separator.Type: GrantFiled: August 2, 2011Date of Patent: November 17, 2015Assignee: Wako Pure Chemical Industries, Ltd.Inventors: Kuniaki Okamoto, Motoshige Sumino, Tsutomu Watahiki, Kouki Ohkubo, Tatsuko Ikeda
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Publication number: 20150287993Abstract: It is an object of the present invention to provide an electrode capable of maintaining superior capacity retention without destruction of an electrode structure, even in the case of using an active material including silicon.Type: ApplicationFiled: October 25, 2013Publication date: October 8, 2015Applicants: WAKO PURE CHEMICAL INDUSTRIES, LTD., Tokyo University of Science FoundationInventors: Shinichi Komaba, Naoaki Yabuuchi, Zhen-Ji Han, Takeo Sasaki, Shota Hashimoto, Kuniaki Okamoto, Tsuneaki Maesawa
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Publication number: 20150244028Abstract: A nonaqueous secondary cell comprising a positive electrode, a negative electrode, and a nonaqueous electrolytic solution, wherein the nonaqueous electrolytic solution contains at least a cyclic nitrogen-containing compound represented by the following general formula (1): wherein R1 is selected from a halogen atom, a lower alkyl group, a lower alkenyl group, a lower alkoxy group, a lower alkoxycarbonyl group, a lower alkylcarbonyl group and an aryl group, and R2 is selected from a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkenyl group, a lower alkoxy group, a lower alkoxycarbonyl group, a lower alkylcarbonyl group and an aryl group; or R1 and R2 are bonded together and are selected from a ring structure containing any of a methylene group, a vinylene group and a divalent linking group containing a hetero atom.Type: ApplicationFiled: September 19, 2013Publication date: August 27, 2015Inventors: Hisayuki Utsumi, Takehito Mitate, Naoto Nishimura, Takahiro Kiyosu, Kuniaki Okamoto, Tsutomu Watahiki
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Patent number: 8969591Abstract: The present invention is directed to provide an efficient production method which is capable of not only obtaining a cyclic sulfonic acid ester (sultone) at low cost and in high yield, but also the sulfonic acid ester (sultone) stably even in a commercial scale. The present invention relates to a method for producing hydroxysultone comprising a first step where a diol having a specified structure and a thionyl halide are reacted to obtain a cyclic sulfite having a specified structure, and a second step where the cyclic sulfite is reacted with water or/and alcohol; a method for producing an unsaturated sultone having a specified structure comprising a third step where a hydroxylsultone having a specified structure is reacted with an acid halide or an acid anhydride to obtain an intermediate, subsequently the intermediate is treated with a base; as well as a cyclic sulfite having a specified structure.Type: GrantFiled: January 24, 2014Date of Patent: March 3, 2015Assignee: Wako Pure Chemical Industries, Ltd.Inventors: Ayako Kuramoto, Kuniaki Okamoto, Tsutomu Watahiki, Motoshige Sumino
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Publication number: 20140162143Abstract: It is an object of the present invention to provide an electrochemical device having an electrolytic solution having high current density and high oxidation resistance, as well as high safety, where dissolution and deposition of magnesium progress repeatedly and stably. The present invention relates to the electrolytic solution for an electrochemical device comprising (1) the supporting electrolyte composed of a magnesium salt and (2) at least one or more kinds of the compound represented by the following general formula [2], as well as the electrochemical device comprising said electrolytic solution, a positive electrode, a negative electrode and a separator.Type: ApplicationFiled: July 26, 2012Publication date: June 12, 2014Applicant: WAKO PURE CHEMICAL INDUSTRIES, LTD.Inventors: Tsutomu Watahiki, Takahiro Kiyosu, Kuniaki Okamoto
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Patent number: 8742136Abstract: It is an object of the present invention to provide a commercially advantageous method for producing a cyclic disulfonic acid ester with high yield, the present invention discloses a method for producing a cyclic disulfonic acid ester represented by the general formula (3), which comprises reacting a silver alkanedisulfonate represented by the general formula (1) with a dihaloalkane represented by the general formula (2) in a nonpolar solvent. Wherein X1 and X2 are each independently a chlorine atom, a bromine atom or an iodine atom; and Y and Z are each independently a substituted or unsubstituted alkylene chain which may have a heteroatom in the chain.Type: GrantFiled: June 14, 2007Date of Patent: June 3, 2014Assignee: Wako Pure Chemical Industries, Ltd.Inventors: Kuniaki Okamoto, Tsutomu Watahiki, Motoshige Sumino
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Publication number: 20140142324Abstract: The present invention is directed to provide an efficient production method which is capable of not only obtaining a cyclic sulfonic acid ester (sultone) at low cost and in high yield, but also the sulfonic acid ester (sultone) stably even in a commercial scale. The present invention relates to a method for producing hydroxysultone comprising a first step where a diol having a specified structure and a thionyl halide are reacted to obtain a cyclic sulfite having a specified structure, and a second step where the cyclic sulfite is reacted with water or/and alcohol; a method for producing an unsaturated sultone having a specified structure comprising a third step where a hydroxylsultone having a specified structure is reacted with an acid halide or an acid anhydride to obtain an intermediate, subsequently the intermediate is treated with a base; as well as a cyclic sulfite having a specified structure.Type: ApplicationFiled: January 24, 2014Publication date: May 22, 2014Applicant: WAKO PURE CHEMICAL INDUSTRIES, LTD.Inventors: Ayako KURAMOTO, Kuniaki OKAMOTO, Tsutomu WATAHIKI, Motoshige SUMINO
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Patent number: 8716513Abstract: Object To provide a method for producing a bis-quaternary ammonium salt efficiently and a novel synthetic intermediate thereof. Solution The present invention relates to a method for producing a bis-quaternary ammonium salt represented by a general formula [3] which comprises reacting a disulfonic acid ester represented by a general formula [1] (in the formula, definitions of two R1's and T are as described in claim 1) with a tertiary amine represented by a general formula [2] (in the formula, definitions of R3 to R5 are as described in claim 1), and a disulfonic acid ester represented by a general formula [1?] (in the formula, two R16's represent independently a halogen atom or a C1-C3 fluoroalkyl group, and two m's represent independently an integer of 1 to 5).Type: GrantFiled: August 5, 2010Date of Patent: May 6, 2014Assignee: Wako Pure Chemical Industries, Ltd.Inventors: Kuniaki Okamoto, Tsutomu Watahiki, Motoshige Sumino
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Patent number: 8673963Abstract: The present invention is directed to provide an efficient production method which is capable of not only obtaining a cyclic sulfonic acid ester (sultone) at low cost and in high yield, but also the sulfonic acid ester (sultone) stably even in a commercial scale. The present invention relates to a method for producing hydroxysultone comprising a first step where a diol having a specified structure and a thionyl halide are reacted to obtain a cyclic sulfite having a specified structure, and a second step where the cyclic sulfite is reacted with water or/and alcohol; a method for producing an unsaturated sultone having a specified structure comprising a third step where a hydroxylsultone having a specified structure is reacted with an acid halide or an acid anhydride to obtain an intermediate, subsequently the intermediate is treated with a base; as well as a cyclic sulfite having a specified structure.Type: GrantFiled: August 3, 2010Date of Patent: March 18, 2014Assignee: Wako Pure Chemical Industries, Ltd.Inventors: Ayako Kuramoto, Kuniaki Okamoto, Tsutomu Watahiki, Motoshige Sumino
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Patent number: 8546609Abstract: Problem: Providing a novel ionic liquid, which is low-cost, environment-friendly, and has low viscosity and melting point. Means for Solving the Problem: The present invention is the invention of the ionic liquid represented by the general formula [1]: {wherein, R1 to R3 and n pieces of R4 each independently represent hydrogen atom or alkyl group having 1 to 4 carbon atoms, R5 to R7 each independently represent alkyl group, aralkyl group, or aryl group, R8 represents alkyl group, aralkyl group, aryl group, or the one represented by the general formula [2]: (wherein T represents alkylene chain having 1 to 8 carbon atoms, n represents 1 or 2, and R1 to R7 are the same as the above-described), X represents nitrogen atom or phosphorus atom, n represents 1 or 2. When n is 1, R3 and R4 are bound and may form cyclohexene ring together with the adjacent carbon atoms. In addition, when X is nitrogen atom, R5 to R7 or R5 to R6 may form hetero ring with nitrogen atom binding thereto}.Type: GrantFiled: August 30, 2010Date of Patent: October 1, 2013Assignee: Wako Pure Chemical Industries, Ltd.Inventors: Tsutomu Watahiki, Kuniaki Okamoto, Motoshige Sumino
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Publication number: 20130143129Abstract: [PROBLEM] To provide: a novel non-aqueous electrolytic solution which uses a methylenebissulfonate derivative, reduces initial irreversible capacity of a battery, and further improves battery characteristics such as cycle characteristics, electric capacity and storage characteristics; a method for producing the non-aqueous electrolytic solution; and a battery which uses the electrolytic solution. [SOLUTION] The present invention relates to the following <1> to <3>. <1> A non-aqueous electrolytic solution comprising the following (1) to (3).Type: ApplicationFiled: August 2, 2011Publication date: June 6, 2013Applicant: WAKO PURE CHEMICAL INDUSTRIES, LTD.Inventors: Kuniaki Okamoto, Motoshige Sumino, Tsutomu Watahiki, Kouki Ohkubo, Tatsuko Ikeda
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Publication number: 20130130128Abstract: [PROBLEM] To provide: a novel non-aqueous electrolytic solution which uses a methylenebissulfonate derivative, reduced initial irreversible capacity of a battery, and further improves battery characteristics such as cycle characteristics, electric capacity and storage characteristics; a method for producing the non-aqueous electrolytic solution; and a battery which uses the electrolytic solution. [SOLUTION] The present invention related to the following <1> to <3>. <1> A non-aqueous electrolytic solution comprising the following (1) to (3).Type: ApplicationFiled: August 2, 2011Publication date: May 23, 2013Applicant: WAKO PURE CHEMICAL INDUSTRIES, LTD.Inventors: Kuniaki Okamoto, Motoshige Sumino, Tsutomu Watahiki, Kouki Ohkubo, Tatsuko Ikeda
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Patent number: 8269038Abstract: The present invention provides a method for producing a sulfonate ester efficiently and in high yield. The present invention is an invention of a method for producing a sulfonate ester compound, which comprising reacting: (a) a compound having a sulfo group (—SO3H); and (b) a compound having a group represented by the general formula [1]: —OR1??[1] [wherein, R1 represents a sulfonyl group represented by the general formula [2]: —SO2—R2??[2] (wherein, R2 represents a halogen atom, a haloalkyl group, an alkoxy group, or an optionally substituted alkyl group or an optionally substituted aryl group) or an acyl group represented by the general formula [3]: (wherein, R3 represents an optionally substituted alkyl group or an optionally substituted aryl group)]; in the presence of an organic base which is capable of forming a salt with said sulfo group.Type: GrantFiled: April 20, 2007Date of Patent: September 18, 2012Assignee: Wako Pure Chemical Industries, Ltd.Inventors: Kuniaki Okamoto, Tsutomu Watahiki, Motoshige Sumino, Takao Shibasaki
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Publication number: 20120157680Abstract: PROBLEM: Providing a novel ionic liquid, which is low-cost, environment-friendly, and has low viscosity and melting point. MEANS FOR SOLVING THE PROBLEM: The present invention is the invention of the ionic liquid represented by the general formula [1]: {wherein, R1 to R3 and n pieces of R4 each independently represent hydrogen atom or alkyl group having 1 to 4 carbon atoms, R5 to R7 each independently represent alkyl group, aralkyl group, or aryl group, R8 represents alkyl group, aralkyl group, aryl group, or the one represented by the general formula [2]: (wherein T represents alkylene chain having 1 to 8 carbon atoms, n represents 1 or 2, and R1 to R7 are the same as the above-described), X represents nitrogen atom or phosphorus atom, n represents 1 or 2. When n is 1, R3 and R4 are bound and may form cyclohexene ring together with the adjacent carbon atoms. In addition, when X is nitrogen atom, R5 to R7 or R5 to R6 may form hetero ring with nitrogen atom binding thereto}.Type: ApplicationFiled: August 30, 2010Publication date: June 21, 2012Applicant: Wako Pure Chemical Industries, Ltd.Inventors: Tsutomu Watahiki, Kuniaki Okamoto, Motoshige Sumino
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Publication number: 20120130107Abstract: Object To provide a method for producing a bis-quaternary ammonium salt efficiently and a novel synthetic intermediate thereof. Solution The present invention relates to a method for producing a bis-quaternary ammonium salt represented by a general formula [3] which comprises reacting a disulfonic acid ester represented by a general formula [1] (in the formula, definitions of two R1's and T are as described in claim 1) with a tertiary amine represented by a general formula [2] (in the formula, definitions of R3 to R5 are as described in claim 1), and a disulfonic acid ester represented by a general formula [1?] (in the formula, two R16's represent independently a halogen atom or a C1-C3 fluoroalkyl group, and two m's represent independently an integer of 1 to 5).Type: ApplicationFiled: August 5, 2010Publication date: May 24, 2012Applicant: WAKO PURE CHEMICAL INDUSTRIES, LTD.Inventors: Kuniaki Okamoto, Tsutomu Watahiki, Motoshige Sumino
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Publication number: 20120130089Abstract: The present invention is directed to provide an efficient production method which is capable of not only obtaining a cyclic sulfonic acid ester (sultone) at low cost and in high yield, but also the sulfonic acid ester (sultone) stably even in a commercial scale. The present invention relates to a method for producing hydroxysultone comprising a first step where a diol having a specified structure and a thionyl halide are reacted to obtain a cyclic sulfite having a specified structure, and a second step where the cyclic sulfite is reacted with water or/and alcohol; a method for producing an unsaturated sultone having a specified structure comprising a third step where a hydroxylsultone having a specified structure is reacted with an acid halide or an acid anhydride to obtain an intermediate, subsequently the intermediate is treated with a base; as well as a cyclic sulfite having a specified structure.Type: ApplicationFiled: August 3, 2010Publication date: May 24, 2012Applicant: WAKO PURE CHEMICAL INDUSTRIES, LTD.Inventors: Ayako Kuramoto, Kuniaki Okamoto, Tsutomu Watahiki, Motoshige Sumino
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Patent number: 8110519Abstract: The objective is to present compositions obtained by supporting by polymers micro clusters of transition metals and the like that are useful as catalysts in various reactions and, once used, are readily recovered and reused. A polymer-supported metal cluster composition is obtained by supporting a transition metal by a cross-linked polymer, and the polymer-supported cluster composition is characterized by the cross-linked polymer obtained by cross-linking of a cross-linkable polymer containing a hydrophilic side chain and a hydrophobic side chain group having a cross-linkable functional group. This polymer-supported metal cluster composition is, for example, preferably formed by first forming a micelle composed of the metal clusters supported by the cross-linkable polymer in a suitable solution and subsequently subjecting the cross-linkable polymer to a cross-linking reaction.Type: GrantFiled: March 7, 2005Date of Patent: February 7, 2012Assignees: Japan Science & Technology Agency, Wako Pure Chemical Industries, Ltd., Fuji Photo Film Co., Ltd.Inventors: Shu Kobayashi, Kuniaki Okamoto, Ryo Akiyama, Keiji Ohno, Yoshio Inagaki
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Publication number: 20100041916Abstract: The present invention provides a method for producing a sulfonate ester efficiently and in high yield. The present invention is an invention of a method for producing a sulfonate ester compound, which comprising reacting: (a) a compound having a sulfo group (—SO3H); and (b) a compound having a group represented by the general formula [1]: —OR1??[1] [wherein, R1 represents a sulfonyl group represented by the general formula [2]: —SO2—R2??[2] (wherein, R2 represents a halogen atom, a haloalkyl group, an alkoxy group, or an optionally substituted alkyl group or an optionally substituted aryl group) or an acyl group represented by the general formula [3]: (wherein, R3 represents an optionally substituted alkyl group or an optionally substituted aryl group)]; in the presence of an organic base which is capable of forming a salt with said sulfo group.Type: ApplicationFiled: April 20, 2007Publication date: February 18, 2010Applicant: WAKO PURE CHEMICAL INDUSTRIES, LTD.Inventors: Kuniaki Okamoto, Tsutomu Watahiki, Motoshige Sumino, Takao Shibasaki
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Patent number: 7663008Abstract: A method of catalytic reaction uses a micro-reactor (1) with a metal catalyst (5) or a metal complex catalyst (5) as a solid phase supported on the inner wall (4c) of a channel (4), a solution (7) dissolving a reactant as a liquid phase and hydrogen (9) as a gas phase are flown through the channel (4) in pipe flow state, and the reaction of the solution (7) and the gas (9) accelerated by the metal catalyst (5) or the metal complex catalyst (5) is conducted by three phase catalytic reaction of solid-liquid-gas phases. The metal catalyst (5) or the metal complex catalyst (5) is incorporated in a polymer, and hydrogenation reaction by three phase catalytic reductive reaction of a substance to be reduced can be conducted in short time at good yield. For hydrogenation reaction of unsaturated organics, the rate of reaction and yield are high when palladium catalyst is used, and carbonylation reaction can be conducted if carbon monoxide is used instead of hydrogen.Type: GrantFiled: January 26, 2005Date of Patent: February 16, 2010Assignee: Japan Science and Technology AgencyInventors: Shu Kobayashi, Yuichiro Mori, Takehiko Kitamori, Masaharu Ueno, Kuniaki Okamoto
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Publication number: 20090281333Abstract: It is an object of the present invention to provide a commercially advantageous method for producing a cyclic disulfonic acid ester with high yield, the present invention discloses a method for producing a cyclic disulfonic acid ester represented by the general formula (3), which comprises reacting a silver alkanedisulfonate represented by the general formula (1) with a dihaloalkane represented by the general formula (2) in a nonpolar solvent. Wherein X1 and X2 are each independently a chlorine atom, a bromine atom or an iodine atom; and Y and Z are each independently a substituted or unsubstituted alkylene chain which may have a heteroatom in the chain.Type: ApplicationFiled: June 14, 2007Publication date: November 12, 2009Applicant: WAKO PURE CHEMICAL INDUSTRIES, LTD.Inventors: Kuniaki Okamoto, Tsutomu Watahiki, Motoshige Sumino