Patents by Inventor Masaaki Shinohata
Masaaki Shinohata 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: 11827586Abstract: The present invention provides a method for producing an amino acid aminoalkyl ester or an inorganic acid salt thereof by reacting a compound represented by general formula (I) shown below or a compound represented by general formula (III) shown below, or a salt thereof, and at least one compound selected from the group consisting of compounds represented by general formula (IV-I) shown below, compounds represented by general formula (IV-II) shown below, compounds represented by general formula (IV-III) shown below and compounds represented by general formula (IV-IV) shown below, or an inorganic acid salt thereof.Type: GrantFiled: May 15, 2019Date of Patent: November 28, 2023Assignee: Asahi Kasei Kabushiki KaishaInventors: Nobuhisa Miyake, Kazuhiro Takagaki, Tsubasa Uematsu, Koichi Nakaoka, Masaaki Shinohata
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Publication number: 20230139979Abstract: A method is provided for collecting a compound of formula (III) (in which R31 is a monovalent to trivalent organic group and n31 is an integer of 1 to 3) from a liquid phase component that is formed as a by-product in a method for producing a compound of general formula (I) (in which R11 is a monovalent to trivalent organic group and n11 is an integer of 1 to 3), wherein the collection method contains steps (1) to (3) or steps (A) and (B), and step (4). Step (1): a step for reacting the liquid phase component with at least one active hydrogen-containing compound in a reactor. Step (2): a step for returning a condensed liquid obtained by cooling gas phase components in the reactor to the reactor. Step (3): a step for discharging gas phase components that are not condensed in the step (2) to the outside of the reactor. Step (A): a step for mixing the liquid phase component, water, and a compound of general formula (III). Step (B): a step for reacting the liquid phase component with water inside the reactor.Type: ApplicationFiled: December 30, 2022Publication date: May 4, 2023Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Nobuhisa MIYAKE, Masaaki SHINOHATA, Yusuke SAKURAI, Yusuke ISHII, Takeharu SASAKI
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Publication number: 20230114799Abstract: An isocyanate composition according to the present invention contains: a difunctional or more-functional isocyanate compound; and 1.0 ppm by mass to 1.0 × 104 ppm by mass, based on the isocyanate compound, of a compound having at least one unsaturated bond excluding unsaturated bonds constituting an aromatic ring, the compound being different from the isocyanate.Type: ApplicationFiled: December 5, 2022Publication date: April 13, 2023Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Nobuhisa MIYAKE, Masaaki SHINOHATA, Atsushi OHKUBO
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Patent number: 11578030Abstract: A method is provided for collecting a compound of formula (III) (in which R31 is a monovalent to trivalent organic group and n31 is an integer of 1 to 3) from a liquid phase component that is formed as a by-product in a method for producing a compound of general formula (I) (in which R11 is a monovalent to trivalent organic group and n 11 is an integer of 1 to 3), wherein the collection method contains steps (1) to (3) or steps (A) and (B), and step (4). Step (1): a step for reacting the liquid phase component with at least one active hydrogen-containing compound in a reactor. Step (2): a step for returning a condensed liquid obtained by cooling gas phase components in the reactor to the reactor. Step (3): a step for discharging gas phase components that are not condensed in the step (2) to the outside of the reactor. Step (A): a step for mixing the liquid phase component, water, and a compound of general formula (III). Step (B): a step for reacting the liquid phase component with water inside the reactor.Type: GrantFiled: December 27, 2018Date of Patent: February 14, 2023Assignee: Asahi Kasei Kabushiki KaishaInventors: Nobuhisa Miyake, Masaaki Shinohata, Yusuke Sakurai, Yusuke Ishii, Takeharu Sasaki
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Publication number: 20230021574Abstract: This isocyanate production method, for continuously producing an isocyanate while suppressing side reactions, is a method for producing an isocyanate through the thermal decomposition of carbamate, and comprises: a thermal decomposition step in which a mixed solution containing carbamate and a compound (A) having a specific structure is continuously put into a pyrolysis reactor and carry out a pyrolysis reaction of carbamate; a low-boiling-point decomposition product recovery step in which a low-boiling-point decomposition product having a lower standard boiling point than the compound (A) is continuously extracted in a gaseous form from the pyrolysis reactor, and a high-boiling-point component recovery step in which a liquid phase component, which is not recovered in a gaseous form in the low-boiling-point decomposition product recovery step, is continuously extracted as a high-boiling-point component from the pyrolysis reactor.Type: ApplicationFiled: November 20, 2019Publication date: January 26, 2023Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Kazuhiro TAKAGAKI, Yusuke IWATA, Masaaki SHINOHATA, Koichi NAKAOKA, Yusuke SAKURAI
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Patent number: 11548975Abstract: An isocyanate composition according to the present invention contains: a difunctional or more-functional isocyanate compound; and 1.0 ppm by mass to 1.0×104 ppm by mass, based on the isocyanate compound, of a compound having at least one unsaturated bond excluding unsaturated bonds constituting an aromatic ring, the compound being different from the isocyanate.Type: GrantFiled: October 13, 2017Date of Patent: January 10, 2023Assignee: Asahi Kasei Kabushiki KaishaInventors: Nobuhisa Miyake, Masaaki Shinohata, Atsushi Ohkubo
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Patent number: 11352319Abstract: The present invention provides a method for producing a carbamate that includes a step (1) and a step (2) described below: (1) a step of producing a compound (A) having a urea linkage, using an organic primary amine having at least one primary amino group per molecule and at least one compound selected from among carbon dioxide and carbonic acid derivatives, at a temperature lower than the thermal dissociation temperature of the urea linkage; and (2) a step of reacting the compound (A) with a carbonate ester to produce a carbamate.Type: GrantFiled: May 15, 2019Date of Patent: June 7, 2022Assignee: Asahi Kasei Kabushiki KaishaInventors: Nobuhisa Miyake, Koichi Nakaoka, Yusuke Sakurai, Midori Nagamoto, Kazuhiro Takagaki, Masaaki Shinohata
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Patent number: 11306055Abstract: An isocyanate production method is characterized by having: a carbamation step in which a carbonic acid ester, an inorganic acid salt of an amino acid derivative, and a basic compound are reacted to obtain a reaction mixture containing a carbamic acid ester derived from the carbonic acid ester, a hydroxy compound derived from the carbonic acid ester, and the carbonic acid ester; and a thermal decomposition step in which the carbamic acid ester is subjected to a thermal decomposition reaction to obtain an isocyanate.Type: GrantFiled: May 15, 2018Date of Patent: April 19, 2022Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Nobuhisa Miyake, Yuji Kosugi, Yusuke Sakurai, Masaaki Shinohata
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Patent number: 11192853Abstract: Disclosed is a method for separating, with a multi-stage distillation column, a mixture containing an active hydrogen-containing compound (A) and a compound (B) that reversibly reacts with the active hydrogen containing compound (A), the method comprising distillation-separating the active hydrogen-containing compound (A) and the compound (B) with the multi-stage distillation column in the presence of an intermediate-boiling-point inactive compound (C) that has a normal boiling point between a normal boiling point of the active hydrogen-containing compound (A) and a normal boiling point of the compound (B) and is chemically inactive for both of the (A) and the compound (B).Type: GrantFiled: December 13, 2017Date of Patent: December 7, 2021Assignee: Asahi Kasei Chemicals CorporationInventors: Masaaki Shinohata, Nobuhisa Miyake
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Patent number: 11174337Abstract: The present invention provides an isocyanate composition including an isocyanate compound having an ethylenically unsaturated bond, a compound represented by formula (1) (in the formula, R1 represents an a-valent organic group, R2 represents a monovalent organic group, a represents an integer of 1 or 2), and/or a compound having a UV absorption in a spectral region of a decamer or higher isocyanate measured by gel permeation chromatography; and an isocyanate composition including an isocyanate compound having an ethylenically unsaturated bond, or a compound having at least one unsaturated bond other than an unsaturated bond constituting an aromatic ring or an inert compound such as a hydrocarbon compound or the like and having a carbon-carbon unsaturated bond other than an unsaturated bond constituting an aromatic ring; or the like R1—(COO—R2)a??(1).Type: GrantFiled: October 13, 2017Date of Patent: November 16, 2021Assignee: Asahi Kasei Kabushiki KaishaInventors: Nobuhisa Miyake, Masaaki Shinohata, Atsushi Ohkubo, Koichi Nakaoka, Yuji Kosugi
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Patent number: 11118001Abstract: An isocyanate composition according to the present invention contains an isocyanate compound of formula (1) and/or (2) (wherein R1 represents a hydrogen or a monovalent organic group, and R2 represents a monovalent organic group), and, relative to the total mass of the isocyanate compound in the composition, 1.0 ppm by mass to 10% by mass of a compound of formula (3): R13—(COO—R14)a (wherein R13 represents an organic group with a valence of a, R14 represents a monovalent organic group, and a represents an integer of 1 or 2), which is different from the isocyanate compound, and/or, 1.0 ppm by mass to 10% by mass of a compound having an UV absorption in an area of decamer or higher isocyanates in a measurement spectrum of gel permeation chromatography.Type: GrantFiled: October 13, 2017Date of Patent: September 14, 2021Assignee: Asahi Kasei Kabushiki KaishaInventors: Nobuhisa Miyake, Masaaki Shinohata, Atsushi Ohkubo, Koichi Nakaoka, Yuji Kosugi
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Publication number: 20210253517Abstract: The present invention provides a method for producing an amino acid aminoalkyl ester or an inorganic acid salt thereof by reacting a compound represented by general formula (I) shown below or a compound represented by general formula (III) shown below, or a salt thereof, and at least one compound selected from the group consisting of compounds represented by general formula (IV-I) shown below, compounds represented by general formula (IV-II) shown below, compounds represented by general formula (IV-III) shown below and compounds represented by general formula (IV-IV) shown below, or an inorganic acid salt thereof.Type: ApplicationFiled: May 15, 2019Publication date: August 19, 2021Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Nobuhisa MIYAKE, Kazuhiro TAKAGAKI, Tsubasa UEMATSU, Koichi NAKAOKA, Masaaki SHINOHATA
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Publication number: 20210238141Abstract: A compound having an uretonimine group contains, as a structural unit, a carbodiimide compound derived from at least one of an aliphatic diisocyanate and an aromatic diisocyanate, and also contains an isocyanate compound as a structural unit, wherein the residue obtained by removing an isocyanate group from the isocyanate compound and the residue obtained by removing a carbodiimide group from the carbodiimide compound are different.Type: ApplicationFiled: May 15, 2019Publication date: August 5, 2021Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Nobuhisa MIYAKE, Masakazu YAMAUCHI, Hiroshi INADA, Yusuke EBE, Masaaki SHINOHATA
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Patent number: 11078321Abstract: An isocyanate composition according to the present invention contains an isocyanate compound of formula (1) and/or (2) (wherein R1 represents a hydrogen or a monovalent organic group, and R2 represents a monovalent organic group), and, relative to the total mass of the isocyanate compound in the composition, 1.0 ppm by mass to 10% by mass of a compound of formula (3): R13—(COO—R14)a (wherein R13 represents an organic group with a valence of a, R14 represents a monovalent organic group, and a represents an integer of 1 or 2), which is different from the isocyanate compound, and/or, 1.0 ppm by mass to 10% by mass of a compound having an UV absorption in an area of decamer or higher isocyanates in a measurement spectrum of gel permeation chromatography.Type: GrantFiled: October 13, 2017Date of Patent: August 3, 2021Assignee: Asahi Kasei Kabushiki KaishaInventors: Nobuhisa Miyake, Masaaki Shinohata, Atsushi Ohkubo, Koichi Nakaoka, Yuji Kosugi
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Patent number: 11046645Abstract: The present invention relates to an isothiocyanate production method using an organic primary amine and thiourea as starting materials; to a composition for transporting and storing an N-substituted O-substituted thiocarbamate that includes an N-substituted O-substituted thiocarbamate and a hydroxy compound, the equivalent weight ratio of hydroxy groups of the hydroxy compound with respect to the carbamate groups of the N-substituted O-substituted thiocarbamate being in the range of 1 to 100; to a composition for transporting and storing a compound with a thioureido group that includes a compound with a thioureido group and a hydroxy compound, the equivalent weight ratio of hydroxy groups of the hydroxy compound with respect to the thioureido groups of the compound with a thioureido group being in the range of 1 to 100; and to an isothiocyanate composition containing an isothiocyanate and a compound with a specific functional group.Type: GrantFiled: April 12, 2019Date of Patent: June 29, 2021Assignee: Asahi Kasei Chemicals CorporationInventors: Masaaki Shinohata, Yuji Kosugi, Nobuhisa Miyake
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Publication number: 20210179548Abstract: The present invention provides a method for producing a carbamate that includes a step (1) and a step (2) described below: (1) a step of producing a compound (A) having a urea linkage, using an organic primary amine having at least one primary amino group per molecule and at least one compound selected from among carbon dioxide and carbonic acid derivatives, at a temperature lower than the thermal dissociation temperature of the urea linkage; and (2) a step of reacting the compound (A) with a carbonate ester to produce a carbamate.Type: ApplicationFiled: May 15, 2019Publication date: June 17, 2021Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Nobuhisa MIYAKE, Koichi NAKAOKA, Yusuke SAKURAI, Midori NAGAMOTO, Kazuhiro TAKAGAKI, Masaaki SHINOHATA
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Publication number: 20210155573Abstract: A method is provided for collecting a compound of formula (III) (in which R31 is a monovalent to trivalent organic group and n31 is an integer of 1 to 3) from a liquid phase component that is formed as a by-product in a method for producing a compound of general formula (I) (in which R11 is a monovalent to trivalent organic group and n 11 is an integer of 1 to 3), wherein the collection method contains steps (1) to (3) or steps (A) and (B), and step (4). Step (1): a step for reacting the liquid phase component with at least one active hydrogen-containing compound in a reactor. Step (2): a step for returning a condensed liquid obtained by cooling gas phase components in the reactor to the reactor. Step (3): a step for discharging gas phase components that are not condensed in the step (2) to the outside of the reactor. Step (A): a step for mixing the liquid phase component, water, and a compound of general formula (III). Step (B): a step for reacting the liquid phase component with water inside the reactor.Type: ApplicationFiled: December 27, 2018Publication date: May 27, 2021Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Nobuhisa MIYAKE, Masaaki SHINOHATA, Yusuke SAKURAI, Yusuke ISHII, Takeharu SASAKI
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Patent number: 10968168Abstract: An isocyanate production method according to the present invention is a method in which an isocyanate is produced by subjecting a carbamate to thermal decomposition, and includes: a step of preparing a mixture liquid containing the carbamate, an inactive solvent and a polyisocyanate compound; a step of conducting a thermal decomposition reaction of the carbamate by continuously introducing the mixture liquid into a thermal decomposition reactor; a step of collecting a low-boiling decomposition product by continuously extracting the low-boiling decomposition product in a gaseous state from the reactor, the low-boiling decomposition product having a boiling point lower than the polyisocyanate compound; and a step of collecting a high-boiling component by continuously extracting, from the reactor, a liquid phase component which is not collected in a gaseous state at the step of collecting the low-boiling decomposition product.Type: GrantFiled: May 15, 2018Date of Patent: April 6, 2021Assignee: Asahi Kasei Kabushiki KaishaInventors: Nobuhisa Miyake, Koichi Nakaoka, Tsubasa Uematsu, Yusuke Sakurai, Yusuke Ishii, Kazuhiro Takagaki, Takeharu Sasaki, Yuji Kosugi, Atsushi Ohkubo, Masaaki Shinohata
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Publication number: 20200216387Abstract: An isocyanate production method is characterized by having: a carbamation step in which a carbonic acid ester, an inorganic acid salt of an amino acid derivative, and a basic compound are reacted to obtain a reaction mixture containing a carbamic acid ester derived from the carbonic acid ester, a hydroxy compound derived from the carbonic acid ester, and the carbonic acid ester; and a thermal decomposition step in which the carbamic acid ester is subjected to a thermal decomposition reaction to obtain an isocyanate.Type: ApplicationFiled: May 15, 2018Publication date: July 9, 2020Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Nobuhisa MIYAKE, Yuji KOSUGI, Yusuke SAKURAI, Masaaki SHINOHATA
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Publication number: 20200115327Abstract: An isocyanate production method according to the present invention is a method in which an isocyanate is produced by subjecting a carbamate to thermal decomposition, and includes: a step of preparing a mixture liquid containing the carbamate, an inactive solvent and a polyisocyanate compound; a step of conducting a thermal decomposition reaction of the carbamate by continuously introducing the mixture liquid into a thermal decomposition reactor; a step of collecting a low-boiling decomposition product by continuously extracting the low-boiling decomposition product in a gaseous state from the reactor, the low-boiling decomposition product having a boiling point lower than the polyisocyanate compound; and a step of collecting a high-boiling component by continuously extracting, from the reactor, a liquid phase component which is not collected in a gaseous state at the step of collecting the low-boiling decomposition product.Type: ApplicationFiled: May 15, 2018Publication date: April 16, 2020Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Nobuhisa MIYAKE, Koichi NAKAOKA, Tsubasa UEMATSU, Yusuke SAKURAI, Yusuke ISHII, Kazuhiro TAKAGAKI, Takeharu SASAKI, Yuji KOSUGI, Atsushi OHKUBO, Masaaki SHINOHATA