Patents by Inventor Ryuichi Ansai
Ryuichi Ansai 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: 20240092956Abstract: Provided is a polymer including a constituent unit (1) based on a monomer represented by Formula (1), in which a content of a constituent unit based on a monomer having a polycyclic structure is 35 mol % or less. In Formula (1), R1 represents a hydrogen atom or a methyl group, A1 represents a linking group including an ester bond, or a single bond, where A1 has no tertiary carbon atom, and Z1 represents an atomic group forming a sulfur-containing cyclic hydrocarbon group having 3 to 6 carbon atoms, which includes a carbon atom bonded to A1, and —SO2—.Type: ApplicationFiled: November 6, 2023Publication date: March 21, 2024Applicant: Mitsubishi Chemical CorporationInventors: Kazuaki Mukai, Takeru Jo, Yoshihiro Kamon, Satoshi Sakuma, Ryuichi Ansai
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Patent number: 11845822Abstract: Provided is a polymer including a constituent unit (1) based on a monomer represented by Formula (1), in which a content of a constituent unit based on a monomer having a polycyclic structure is 35 mol % or less. In Formula (1), R1 represents a hydrogen atom or a methyl group, A1 represents a linking group including an ester bond, or a single bond, where A1 has no tertiary carbon atom, and Z1 represents an atomic group forming a sulfur-containing cyclic hydrocarbon group having 3 to 6 carbon atoms, which includes a carbon atom bonded to A1, and —SO2—.Type: GrantFiled: March 25, 2020Date of Patent: December 19, 2023Assignee: Mitsubishi Chemical CorporationInventors: Kazuaki Mukai, Takeru Jo, Yoshihiro Kamon, Satoshi Sakuma, Ryuichi Ansai
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Patent number: 11840744Abstract: Provided are a method for recovering gold, in which gold is recovered from a solution containing a gold cyano complex using a crosslinked resin containing a vinyl amine unit, by which gold can be efficiently recovered from the solution not only in a case (A) where a concentration of the gold cyano complex in the solution is low but also in a case (B) where another metal is dissolved in the solution; a method for recovering gold, in which the crosslinked resin and the solution are brought into contact with each other to separate the crosslinked resin and the solution from each other, by which gold can be efficiently recovered from the solution not only in the case (A) but also in the case (B); and a gold recovery facility comprising: a container inside which the crosslinked resin is accommodated in a flowable manner; and a device which feeds the solution to the container, by which gold can be efficiently recovered from the solution not only in the case (A) but also in the case (B).Type: GrantFiled: June 22, 2020Date of Patent: December 12, 2023Assignee: HYMO CorporationInventors: Ryuichi Ansai, Fumi Oono, Satoshi Sakuma, Fumiaki Satou, Akihiro Ishii, Yasuharu Mori
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Publication number: 20220213243Abstract: Provided is a polymer including a constituent unit (1) based on a monomer represented by Formula (1), in which a content of a constituent unit based on a monomer having a polycyclic structure is 35 mol % or less. In Formula (1), R1 represents a hydrogen atom or a methyl group, A1 represents a linking group including an ester bond, or a single bond, where A1 has no tertiary carbon atom, and Z1 represents an atomic group forming a sulfur-containing cyclic hydrocarbon group having 3 to 6 carbon atoms, which includes a carbon atom bonded to A1, and —SO2—.Type: ApplicationFiled: March 25, 2020Publication date: July 7, 2022Applicant: Mitsubishi Chemical CorporationInventors: Kazuaki Mukai, Takeru Jo, Yoshihiro Kamon, Satoshi Sakuma, Ryuichi Ansai
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Publication number: 20200318217Abstract: Provided are a method for recovering gold, in which gold is recovered from a solution containing a gold cyano complex using a crosslinked resin containing a vinyl amine unit, by which gold can be efficiently recovered from the solution not only in a case (A) where a concentration of the gold cyano complex in the solution is low but also in a case (B) where another metal is dissolved in the solution; a method for recovering gold, in which the crosslinked resin and the solution are brought into contact with each other to separate the crosslinked resin and the solution from each other, by which gold can be efficiently recovered from the solution not only in the case (A) but also in the case (B); and a gold recovery facility comprising: a container inside which the crosslinked resin is accommodated in a flowable manner; and a device which feeds the solution to the container, by which gold can be efficiently recovered from the solution not only in the case (A) but also in the case (B).Type: ApplicationFiled: June 22, 2020Publication date: October 8, 2020Applicant: Mitsubishi Chemical CorporationInventors: Ryuichi ANSAI, Fumi OONO, Satoshi SAKUMA, Fumiaki SATOU, Akihiro ISHII, Yasuharu MORI
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Publication number: 20190352514Abstract: Disclosed herein is an antifouling coating composition containing a resin composition and an antifouling agent, where the resin composition includes a polymer (A) containing at least one monomer-derived structural unit having the structure represented by formula (1), (2) or (3) below, and after the resin composition is stored at 40° C. for 30 days, the decomposition rate of the structure represented by formula (1), (2) or (3) in the polymer (A) is 20% or lower.Type: ApplicationFiled: August 1, 2019Publication date: November 21, 2019Applicant: Mitsubishi Chemical CorporationInventors: Sho Katsumata, Kana Taniguchi, Junichi Nakamura, Masatoshi Ura, Yoshihiro Kamon, Takafumi Asai, Ryuichi Ansai
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Publication number: 20180051179Abstract: A resin composition, formed to have a polymer (A) containing at least one monomer-derived structural unit having the structure represented by formula (1), (2) or (3) below, and after the resin composition is stored at 40° C. for 30 days, the decomposition rate of the structure represented by formula (1), (2) or (3) in the polymer (A) is 20% or lower.Type: ApplicationFiled: April 15, 2016Publication date: February 22, 2018Applicant: Mitsubishi Chemical CorporationInventors: Sho KATSUMATA, Kana TANIGUCHI, Junichi NAKAMURA, Masatoshi URA, Yoshihiro KAMON, Takafumi ASAI, Ryuichi ANSAI
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Patent number: 9791796Abstract: The present invention relates to a polyester resin which comprises a constituent unit represented by general formula (1), a constituent unit derived from a compound having a bisphenol skeleton and a constituent unit derived from a polyvalent carboxylic acid, and wherein the constituent unit derived from a compound having a bisphenol skeleton is contained in an amount of 20 parts by mole or more per 100 parts by mole of the constituent unit derived from a polyvalent carboxylic acid. The present invention is able to provide a polyester resin which has excellent solubility in a solvent and excellent pulverization properties, and which provides a toner having excellent storage stability.Type: GrantFiled: December 24, 2013Date of Patent: October 17, 2017Assignee: Mitsubishi Chemical CorporationInventors: Tadahiro Ozawa, Masaru Sugiura, Ryuichi Ansai, Satoshi Sakuma
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Patent number: 9540468Abstract: Provided is a resist copolymer which has favorable sensitivity, enables a resist pattern to be formed to have a favorable shape, has favorable dry etching resistance when a dry etching is carried out using the resist pattern as a mask, and suppresses the surface roughness of a pattern formed by carrying out a dry etching process to a substrate. A resist copolymer including a constituent unit (1) based on a (meth)acrylic acid ester derivative having a cyclic hydrocarbon group such as an adamantane ring and two or more cyano groups bonded to the cyclic hydrocarbon group, a constituent unit (2) having a lactone backbone and a cross-linking cyclic structure, and a constituent unit (3) having an acid leaving group.Type: GrantFiled: June 10, 2014Date of Patent: January 10, 2017Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Keisuke Kato, Atsushi Yasuda, Ryuichi Ansai, Shinichi Maeda
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Publication number: 20160370723Abstract: The present invention relates to a polyester resin which comprises a constituent unit represented by general formula (1), a constituent unit derived from a compound having a bisphenol skeleton and a constituent unit derived from a polyvalent carboxylic acid, and wherein the constituent unit derived from a compound having a bisphenol skeleton is contained in an amount of 20 parts by mole or more per 100 parts by mole of the constituent unit derived from a polyvalent carboxylic acid. The present invention is able to provide a polyester resin which has excellent solubility in a solvent and excellent pulverization properties, and which provides a toner having excellent storage stability.Type: ApplicationFiled: December 24, 2013Publication date: December 22, 2016Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Tadahiro OZAWA, Masaru SUGIURA, Ryuichi ANSAI, Satoshi SAKUMA
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Publication number: 20140371412Abstract: Provided is a resist copolymer which has favorable sensitivity, enables a resist pattern to be formed to have a favorable shape, has favorable dry etching resistance when a dry etching is carried out using the resist pattern as a mask, and suppresses the surface roughness of a pattern formed by carrying out a dry etching process to a substrate. A resist copolymer including a constituent unit (1) based on a (meth)acrylic acid ester derivative having a cyclic hydrocarbon group such as an adamantane ring and two or more cyano groups bonded to the cyclic hydrocarbon group, a constituent unit (2) having a lactone backbone and a cross-linking cyclic structure, and a constituent unit (3) having an acid leaving group.Type: ApplicationFiled: June 10, 2014Publication date: December 18, 2014Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Keisuke KATO, Atsushi YASUDA, Ryuichi ANSAI, Shinichi MAEDA
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Patent number: 8859804Abstract: Disclosed is a method for producing a (meth)acrylate ester wherein a high purity (meth)acrylate ester is obtained with a high yield, with a reduced loss of (meth)acrylic acid anhydride. In the method, (meth)acrylic acid is recovered with a high yield, and the (meth)acrylate ester is purified easily. Specifically disclosed is a method for producing a (meth)acrylate ester which comprises: (1) a step of producing (meth)acrylic acid anhydride by reacting a specific fatty acid anhydride and (meth)acrylic acid, while removing a by-produced fatty acid; (2) a step of obtaining a (meth)acrylate ester by reacting an alcohol and unpurified (meth)acrylic acid anhydride obtained in step (1) preferably at a temperature not less than 90° C.; and (3) a step of recovering (meth)acrylic acid by distillation preferably at a temperature not less than 90° C. The method may also comprise a step of heating or distilling the reaction liquid obtained in step (2) at a temperature not less than 90° C.Type: GrantFiled: February 4, 2010Date of Patent: October 14, 2014Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Ryuichi Ansai, Hiroyuki Nogami, Kuniyoshi Ogura
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Patent number: 8710262Abstract: It is an object of the present invention to provide a method for producing (meth)acrylic anhydride that provides high yield and high efficiency and can suppress side reactions, in a method for reacting (meth)acrylic acid with a fatty acid anhydride to produce (meth)acrylic anhydride. The method for producing (meth)acrylic anhydride according to the present invention is a method for producing (meth)acrylic anhydride, including reacting a fatty acid anhydride with (meth)acrylic acid to produce (meth)acrylic anhydride, while extracting a fatty acid produced as a by-product, wherein the reaction is performed, while adjustment is performed so that a molar ratio of the (meth)acrylic acid to the (meth)acrylic anhydride in a reaction liquid is 0.3 or more.Type: GrantFiled: September 3, 2013Date of Patent: April 29, 2014Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Ryuichi Ansai, Hiroyuki Nogami, Kuniyoshi Ogura
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Publication number: 20140005435Abstract: It is an object of the present invention to provide a method for producing (meth)acrylic anhydride that provides high yield and high efficiency and can suppress side reactions, in a method for reacting (meth)acrylic acid with a fatty acid anhydride to produce (meth)acrylic anhydride. The method for producing (meth)acrylic anhydride according to the present invention is a method for producing (meth)acrylic anhydride, including reacting a fatty acid anhydride with (meth)acrylic acid to produce (meth)acrylic anhydride, while extracting a fatty acid produced as a by-product, wherein the reaction is performed, while adjustment is performed so that a molar ratio of the (meth)acrylic acid to the (meth)acrylic anhydride in a reaction liquid is 0.3 or more.Type: ApplicationFiled: September 3, 2013Publication date: January 2, 2014Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Ryuichi ANSAI, Hiroyuki Nogami, Kuniyoshi Ogura
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Patent number: 8586791Abstract: It is an object of the present invention to provide a method for producing (meth)acrylic anhydride that provides high yield and high efficiency and can suppress side reactions, in a method for reacting (meth)acrylic acid with a fatty acid anhydride to produce (meth)acrylic anhydride. The method for producing (meth)acrylic anhydride according to the present invention is a method for producing (meth)acrylic anhydride, including reacting a fatty acid anhydride with (meth)acrylic acid to produce (meth)acrylic anhydride, while extracting a fatty acid produced as a by-product, wherein the reaction is performed, while adjustment is performed so that a molar ratio of the (meth)acrylic acid to the (meth)acrylic anhydride in a reaction liquid is 0.3 or more.Type: GrantFiled: August 4, 2009Date of Patent: November 19, 2013Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Ryuichi Ansai, Hiroyuki Nogami, Kuniyoshi Ogura
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Publication number: 20130286146Abstract: A transparent plastic rod lens which has a cylindrical shape with a radius r in which a refractive index nD is reduced from a center thereof to an outer periphery thereof, the plastic rod lens includes a polymer mixture (I), in which the polymer mixture (I) includes, as constitutional units, an aromatic ring-containing monomer (a) unit and at least one monomer unit selected from a group consisting of a (meth)acrylate (b) unit which has a branched hydrocarbon group having 3 or more carbon atoms, a fluorine-containing monomer (c) unit, and an alicyclic ring-containing (meth)acrylate (d) unit, and a glass transition temperature is higher than or equal to 100° C.Type: ApplicationFiled: January 6, 2012Publication date: October 31, 2013Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Masafumi Kitamura, Kikue Irie, Yoshikazu Saito, Ryuichi Ansai, Hiroyuki Nogami, Yasushi Kawaharada, Takashi Saeki
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Publication number: 20110301379Abstract: Disclosed is a method for producing a (meth)acrylate ester wherein a high purity (meth)acrylate ester is obtained with a high yield, with a reduced loss of (meth)acrylic acid anhydride. In the method, (meth)acrylic acid is recovered with a high yield, and the (meth)acrylate ester is purified easily. Specifically disclosed is a method for producing a (meth)acrylate ester which comprises: (1) a step of producing (meth)acrylic acid anhydride by reacting a specific fatty acid anhydride and (meth)acrylic acid, while removing a by-produced fatty acid; (2) a step of obtaining a (meth)acrylate ester by reacting an alcohol and unpurified (meth)acrylic acid anhydride obtained in step (1) preferably at a temperature not less than 90° C.; and (3) a step of recovering (meth)acrylic acid by distillation preferably at a temperature not less than 90° C. The method may also comprise a step of heating or distilling the reaction liquid obtained in step (2) at a temperature not less than 90° C.Type: ApplicationFiled: February 4, 2010Publication date: December 8, 2011Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Ryuichi Ansai, Hiroyuki Nogami, Kuniyoshi Ogura
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Publication number: 20110137072Abstract: It is an object of the present invention to provide a method for producing (meth)acrylic anhydride that provides high yield and high efficiency and can suppress side reactions, in a method for reacting (meth)acrylic acid with a fatty acid anhydride to produce (meth)acrylic anhydride. The method for producing (meth)acrylic anhydride according to the present invention is a method for producing (meth)acrylic anhydride, including reacting a fatty acid anhydride with (meth)acrylic acid to produce (meth)acrylic anhydride, while extracting a fatty acid produced as a by-product, wherein the reaction is performed, while adjustment is performed so that a molar ratio of the (meth)acrylic acid to the (meth)acrylic anhydride in a reaction liquid is 0.3 or more.Type: ApplicationFiled: August 4, 2009Publication date: June 9, 2011Applicant: Mitsubishi Rayon Co. LTdInventors: Ryuichi Ansai, Hiroyuki Nogami, Kuniyoshi Ogura
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Patent number: 7316884Abstract: A 5-methylene-1,3-dioxolan-4-one derivative and a monomer and copolymer thereof and a resist composition containing the polymer or copolymer where the 5-methylene-1,3 -dioxolan-4-one derivative is of formula (1): wherein R1 represents a bridged cyclic hydrocarbon group containing 4 to 16 carbon atoms, or a linear or branched alkyl group containing 1 to 6 carbon atoms which has a bridged cyclic hydrocarbon group containing 4 to 16 carbon atoms as a substituent; R2 represents a hydrogen atom, or a linear or branched alkyl group containing 1 to 6 carbon atoms; or R1 and R2 represent a bridged cyclic hydrocarbon group containing 4 to 16 carbon atoms together with the carbon atom to which they are bound, provided that the alkyl group and the bridged cyclic hydrocarbon group may have at least one substituent selected from a group consisting of a linear or branched alkyl group containing 1 to 6 carbon atoms which may be optionally substituted, a hydroxy group, a carboxy group, an acyl group containing 2 to 6 carType: GrantFiled: October 22, 2002Date of Patent: January 8, 2008Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Ryuichi Ansai, Yoshihiro Kamon, Tadayuki Fujiwara, Hideaki Kuwano, Atsushi Ootake, Hikaru Momose
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Publication number: 20040248031Abstract: The 5-methylene-1,3-dioxolan-4-one derivative of the present invention is represented by the formula (1) indicated below, and it is a novel monomer from which a homopolymer and a copolymer excellent in light transparency and heat stability are obtained. Moreover, the polymer obtained by (co)polymerizing a monomer composition comprising the derivative represented by the formula (1) indicated below is excellent in the resist performance such as sensitivity, resolution and dry etching resistance, and solubility in an organic solvent, also having little line edge roughness, and thus it is preferably used as a resin for a resist composition.Type: ApplicationFiled: April 22, 2004Publication date: December 9, 2004Inventors: Ryuichi Ansai, Yoshihiro Kamon, Tadayuki Fujiwara, Hideaki Kuwano, Atsushi Ootake, Hikayu Momose