Patents by Inventor Kanako SANUKI
Kanako SANUKI 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: 10934246Abstract: Disclosed is a mixture containing compound (I) and polymerizable compound (II) wherein compound (I) accounts for 50 mol % or more of the entire mixture and 1,4-cyclohexanedicarboxylic acid accounts for less than 5 mol % of the entire mixture; a method of producing the mixture which includes reacting in a water-immiscible organic solvent 1,4-cyclohexanedicarboxylic acid dichloride with compound (IV) in the presence of a base, and washing the obtained reaction solution with a weakly acidic buffer solution; etc. The disclosure provides mixtures useful for low-cost production of polymerizable compounds which have low melting points suitable for practical use, show superior solubility to general-purpose solvents, can be produced at low costs, and allow for provision of optical films capable of uniform polarized light conversion over a wide wavelength range, and methods of producing the mixtures. where A represents hydrogen, methyl group or chlorine, and n represents an integer of 1 to 20.Type: GrantFiled: January 16, 2020Date of Patent: March 2, 2021Assignee: ZEON CORPORATIONInventors: Kei Sakamoto, Kumi Okuyama, Kanako Sanuki
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Publication number: 20200148622Abstract: Disclosed is a mixture containing compound (I) and polymerizable compound (II) wherein compound (I) accounts for 50 mol % or more of the entire mixture and 1,4-cyclohexanedicarboxylic acid accounts for less than 5 mol % of the entire mixture; a method of producing the mixture which includes reacting in a water-immiscible organic solvent 1,4-cyclohexanedicarboxylic acid dichloride with compound (IV) in the presence of a base, and washing the obtained reaction solution with a weakly acidic buffer solution; etc. The disclosure provides mixtures useful for low-cost production of polymerizable compounds which have low melting points suitable for practical use, show superior solubility to general-purpose solvents, can be produced at low costs, and allow for provision of optical films capable of uniform polarized light conversion over a wide wavelength range, and methods of producing the mixtures. where A represents hydrogen, methyl group or chlorine, and n represents an integer of 1 to 20.Type: ApplicationFiled: January 16, 2020Publication date: May 14, 2020Applicant: ZEON CORPORATIONInventors: Kei SAKAMOTO, Kumi OKUYAMA, Kanako SANUKI
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Patent number: 10633323Abstract: Provided is a method of producing an acid halide solution that is useful in production of a polymerizable liquid-crystal compound. The method of producing an acid halide solution includes: a first step of reacting a specific dicarboxylic acid compound with a halogenating agent in a water-immiscible organic solvent in the presence of at least 1.1 equivalents and not more than 3.0 equivalents of an activator relative to the dicarboxylic acid compound to obtain a reaction liquid including a solution that contains an acid halide compound and an oily liquid that is immiscible with the solution containing the acid halide compound; and a second step of removing the oily liquid from the reaction liquid obtained in the first step to obtain a purified liquid containing the acid halide compound.Type: GrantFiled: January 20, 2017Date of Patent: April 28, 2020Assignee: ZEON CORPORATIONInventors: Kanako Sanuki, Kei Sakamoto, Kumi Okuyama, Hiroki Iwaki
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Patent number: 10577306Abstract: Disclosed is a mixture containing compound (I) and polymerizable compound (II) wherein compound (I) accounts for 50 mol % or more of the entire mixture and 1,4-cyclohexanedicarboxylic acid accounts for less than 5 mol % of the entire mixture; a method of producing the mixture which includes reacting in a water-immiscible organic solvent 1,4-cyclohexanedicarboxylic acid dichloride with compound (IV) in the presence of a base, and washing the obtained reaction solution with a weakly acidic buffer solution; etc. The disclosure provides mixtures useful for low-cost production of polymerizable compounds which have low melting points suitable for practical use, show superior solubility to general-purpose solvents, can be produced at low costs, and allow for provision of optical films capable of uniform polarized light conversion over a wide wavelength range, and methods of producing the mixtures. where A represents hydrogen, methyl group or chlorine, and n represents an integer of 1 to 20.Type: GrantFiled: March 30, 2016Date of Patent: March 3, 2020Assignee: ZEON CORPORATIONInventors: Kei Sakamoto, Kumi Okuyama, Kanako Sanuki
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Patent number: 10538477Abstract: Provided are a production method for compound (II) including reacting compound (I) with a halogenating agent in the presence of at least 0.5 equivalents, relative to compound (I), of a nitrogen atom-containing polar aprotic solvent; a composition containing compound (II), a halogenating agent or the like, and at least 0.5 equivalents, relative to compound (II), of a nitrogen atom-containing polar aprotic solvent; a stabilization method for compound (II); and compound (II).Type: GrantFiled: June 30, 2015Date of Patent: January 21, 2020Assignee: ZEON CORPORATIONInventors: Kumi Okuyama, Kei Sakamoto, Kanako Sanuki
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Patent number: 10508072Abstract: The present disclosure provides a method for producing an acid halide solution that is useful as a production intermediate or the like that allows industrially advantageous production of a polymerizable liquid crystal compound. The method for producing an acid halide solution of the present disclosure includes a step ? of reacting a halogenating agent and a dicarboxylic acid compound in a water-immiscible organic solvent in the presence of a tetraalkylammonium salt to obtain a water-immiscible organic solvent solution including an acid halide, and a step ? of concentrating the obtained water-immiscible organic solvent solution.Type: GrantFiled: September 29, 2016Date of Patent: December 17, 2019Assignee: ZEON CORPORATIONInventors: Kumi Okuyama, Kei Sakamoto, Kanako Sanuki, Hiroki Iwaki
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Publication number: 20190152934Abstract: Provided is a method of producing a high-purity polymerizable compound in an industrially advantageous manner. The production method is a method of producing a polymerizable compound indicated by the following formula (I). The method includes subjecting a composition containing a halogenated compound indicated by the following formula (II) to a dehydrohalogenation reaction in an organic solvent in the presence of an aqueous layer containing a basic compound.Type: ApplicationFiled: May 11, 2017Publication date: May 23, 2019Applicant: ZEON CORPORATIONInventors: Kei SAKAMOTO, Kumi OKUYAMA, Kanako SANUKI
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Patent number: 10227292Abstract: A polymerizable compound, a polymerizable composition, and a polymer, which have a low melting point at a practical level and exhibit excellent solubility in a general-purpose solvent, can be produced at low cost. The polymerizable compound, polymerizable composition, and polymer can produce an optical film, which exhibits excellent transparency and achieves uniform conversion of polarized light over a wide wavelength band, and an optically anisotropic article. The polymerizable compound is represented by formula (I).Type: GrantFiled: February 12, 2014Date of Patent: March 12, 2019Assignee: ZEON CORPORATIONInventors: Kei Sakamoto, Satoshi Kiriki, Kumi Okuyama, Kanako Sanuki
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Publication number: 20190016662Abstract: Provided is a method of producing an acid halide solution that is useful in production of a polymerizable liquid-crystal compound. The method of producing an acid halide solution includes: a first step of reacting a specific dicarboxylic acid compound with a halogenating agent in a water-immiscible organic solvent in the presence of at least 1.1 equivalents and not more than 3.0 equivalents of an activator relative to the dicarboxylic acid compound to obtain a reaction liquid including a solution that contains an acid halide compound and an oily liquid that is immiscible with the solution containing the acid halide compound; and a second step of removing the oily liquid from the reaction liquid obtained in the first step to obtain a purified liquid containing the acid halide compound.Type: ApplicationFiled: January 20, 2017Publication date: January 17, 2019Applicant: ZEON CORPORATIONInventors: Kanako SANUKI, Kei SAKAMOTO, Kumi OKUYAMA, Hiroki IWAKI
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Publication number: 20180346401Abstract: The present disclosure provides a method for producing an acid halide solution that is useful as a production intermediate or the like that allows industrially advantageous production of a polymerizable liquid crystal compound. The method for producing an acid halide solution of the present disclosure includes a step ? of reacting a halogenating agent and a dicarboxylic acid compound in a water-immiscible organic solvent in the presence of a tetraalkylammonium salt to obtain a water-immiscible organic solvent solution including an acid halide, and a step ? of concentrating the obtained water-immiscible organic solvent solution.Type: ApplicationFiled: September 29, 2016Publication date: December 6, 2018Applicant: ZEON CORPORATIONInventors: Kumi OKUYAMA, Kei SAKAMOTO, Kanako SANUKI, Hiroki IWAKI
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Patent number: 10059679Abstract: Provided is a method for producing a polymerizable compound represented by a formula (I) comprising: a step (1) that reacts a compound represented by a formula (II) with 2,5-dihydroxybenzaldehyde in an organic solvent in the presence of a base to obtain a reaction mixture including a compound represented by a formula (III); and a step (2) that adds a compound represented by a formula (IV) and an acidic aqueous solution to the reaction mixture obtained by the step (1) to effect a reaction, wherein A represents a hydrogen atom, a methyl group or the like, L represents a leaving group, n represents an integer from 1 to 20, X represents an oxygen atom, a sulfur atom, —C(R1)(R2)— or the like, R represents a hydrogen atom, an organic group or the like, and each of RX represents a hydrogen atom, a halogen atom or the like. According to the present invention, provided is a method for producing a polymerizable compound represented by a formula (I) at high purity and at high yield.Type: GrantFiled: March 19, 2015Date of Patent: August 28, 2018Assignee: ZEON CORPORATIONInventors: Kumi Okuyama, Kanako Sanuki, Kei Sakamoto
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Publication number: 20180099921Abstract: Disclosed is a mixture containing compound (I) and polymerizable compound (II) wherein compound (I) accounts for 50 mol % or more of the entire mixture and 1,4-cyclohexanedicarboxylic acid accounts for less than 5 mol % of the entire mixture; a method of producing the mixture which includes reacting in a water-immiscible organic solvent 1,4-cyclohexanedicarboxylic acid dichloride with compound (IV) in the presence of a base, and washing the obtained reaction solution with a weakly acidic buffer solution; etc. The disclosure provides mixtures useful for low-cost production of polymerizable compounds which have low melting points suitable for practical use, show superior solubility to general-purpose solvents, can be produced at low costs, and allow for provision of optical films capable of uniform polarized light conversion over a wide wavelength range, and methods of producing the mixtures. where A represents hydrogen, methyl group or chlorine, and n represents an integer of 1 to 20.Type: ApplicationFiled: March 30, 2016Publication date: April 12, 2018Applicant: ZEON CORPORATIONInventors: Kei SAKAMOTO, Kumi OKUYAMA, Kanako SANUKI
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Publication number: 20170190679Abstract: Provided is a method for producing a polymerizable compound represented by a formula (I) comprising: a step (1) that reacts a compound represented by a formula (II) with 2,5-dihydroxybenzaldehyde in an organic solvent in the presence of a base to obtain a reaction mixture including a compound represented by a formula (III); and a step (2) that adds a compound represented by a formula (IV) and an acidic aqueous solution to the reaction mixture obtained by the step (1) to effect a reaction, wherein A represents a hydrogen atom, a methyl group or the like, L represents a leaving group, n represents an integer from 1 to 20, X represents an oxygen atom, a sulfur atom, —C(R1)(R2)— or the like, R represents a hydrogen atom, an organic group or the like, and each of RX represents a hydrogen atom, a halogen atom or the like. According to the present invention, provided is a method for producing a polymerizable compound represented by a formula (I) at high purity and at high yield.Type: ApplicationFiled: March 19, 2015Publication date: July 6, 2017Applicant: ZEON CORPORATIONInventors: Kumi OKUYAMA, Kanako SANUKI, Kei SAKAMOTO
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Publication number: 20170158604Abstract: Provided are a production method for compound (II) including reacting compound (I) with a halogenating agent in the presence of at least 0.5 equivalents, relative to compound (I), of a nitrogen atom-containing polar aprotic solvent; a composition containing compound (II), a halogenating agent or the like, and at least 0.5 equivalents, relative to compound (II), of a nitrogen atom-containing polar aprotic solvent; a stabilization method for compound (II); and compound (II).Type: ApplicationFiled: June 30, 2015Publication date: June 8, 2017Applicant: ZEON CORPORATIONInventors: Kumi OKUYAMA, Kei SAKAMOTO, Kanako SANUKI
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Patent number: 9643942Abstract: This method for a manufacturing a 1,1-disubstituted hydrazine compound represented by a formula (II) involves reacting a hydrazino compound represented by a formula (I) with a compound represented by a formula: R-Hal in an aprotic polar solvent in the presence of a base selected from an alkali metal hydroxide and alkaline-earth metal hydroxide in an amount of 1.0 to 3.0 equivalents based on the hydrazino compound. In the formulae, X represents an oxygen atom, a sulfur atom, —CH2— or the like, and each of RX represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, a cyano group, a nitro group, a fluoroalkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or the like. An arbitrary C—RX that forms the ring is optionally substituted with a nitrogen atom. Hal represents a chlorine atom, a bromine atom, or an iodine atom, and R represents a substituted or unsubstituted organic group having 1 to 12 carbon atoms.Type: GrantFiled: February 24, 2015Date of Patent: May 9, 2017Assignee: ZEON CORPORATIONInventors: Kanako Sanuki, Kumi Okuyama
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Publication number: 20170015639Abstract: Provided is a method for producing a polymerizable compound represented by a formula (I) comprising: a step (1) that reacts a compound represented by a formula (II) with 2,5-dihydroxybenzaldehyde in an organic solvent in the presence of a base to obtain a reaction mixture including a compound represented by a formula (III); and a step (2) that adds a compound represented by a formula (IV) and an acidic aqueous solution to the reaction mixture obtained by the step (1) to effect a reaction, wherein A represents a hydrogen atom, a methyl group or the like, L represents a leaving group, n represents an integer from 1 to 20, X represents an oxygen atom, a sulfur atom, —C(R1)(R2)— or the like, R represents a hydrogen atom, an organic group or the like, and each of RX represents a hydrogen atom, a halogen atom or the like. According to the present invention, provided is a method for producing a polymerizable compound represented by a formula (I) at high purity and at high yield.Type: ApplicationFiled: March 19, 2015Publication date: January 19, 2017Applicant: ZEON CORPORATIONInventors: Kumi OKUYAMA, Kanako SANUKI, Kei SAKAMOTO
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Publication number: 20170008862Abstract: This method for a manufacturing a 1,1-disubstituted hydrazine compound represented by a formula (II) involves reacting a hydrazino compound represented by a formula (I) with a compound represented by a formula: R-Hal in an aprotic polar solvent in the presence of a base selected from an alkali metal hydroxide and alkaline-earth metal hydroxide in an amount of 1.0 to 3.0 equivalents based on the hydrazino compound. In the formulae, X represents an oxygen atom, a sulfur atom, —CH2— or the like, and each of RX represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, a cyano group, a nitro group, a fluoroalkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms or the like. An arbitrary C—RX that forms the ring is optionally substituted with a nitrogen atom. Hal represents a chlorine atom, a bromine atom, or an iodine atom, and R represents a substituted or unsubstituted organic group having 1 to 12 carbon atoms.Type: ApplicationFiled: February 24, 2015Publication date: January 12, 2017Applicant: ZEON CORPORATIONInventors: Kanako SANUKI, Kumi OKUYAMA
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Publication number: 20160002374Abstract: According to the invention, a polymerizable compound, a polymerizable composition, and a polymer that have a low melting point at a practical level, exhibit excellent solubility in a general-purpose solvent, can be produced at low cost, and can produce an optical film that exhibits excellent transparency, and achieves uniform conversion of polarized light over a wide wavelength band, and an optically anisotropic article can be provided. In formula (I), Y1 to Y8 are, —O—, —O—C(?O)—, —C(?O)—O—, etc., G1 and G2 are a divalent linear aliphatic group of 1-20 carbon atoms, Z1 and Z2 are an alkenyl group of 2-10 carbon atoms that is substituted with a halogen atom, or unsubstituted, Ax is an organic group of 2-30 carbon atoms that includes at least one aromatic ring, Ay is a hydrogen atom, an alkyl group of 1-20 carbon atoms, etc.Type: ApplicationFiled: February 12, 2014Publication date: January 7, 2016Applicant: ZEON CORPORATIONInventors: Kei SAKAMOTO, Satoshi KIRIKI, Kumi OKUYAMA, Kanako SANUKI