Patents by Inventor Shohei TAKATA
Shohei TAKATA 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: 20230151138Abstract: Provided are a stereoisomer of an epoxy compound that when contained in a curable composition, can improve the heat resistance and dielectric properties of the cured product of the curable composition, a curable composition containing the stereoisomer, and a cured product of the curable composition. A stereoisomer of an epoxy compound represented by Formula (1) below, the stereoisomer being represented by Formula (2), and a curable composition containing the stereoisomer are used: in which in Formula (1), R1 to R18 are each independently selected from the group consisting of hydrogen, an alkyl group, and an alkoxy group; and in which in Formula (2), R1 to R18 are each the same as in Formula (1).Type: ApplicationFiled: March 25, 2021Publication date: May 18, 2023Applicant: ENEOS CORPORATIONInventors: Shohei TAKATA, Takeshi KOIKE, Kenta UE
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Patent number: 11485717Abstract: The invention provides a method for producing an epoxy compound by hydrogen peroxide using an organic compound having a carbon-carbon double bond as a raw material, wherein a by-product is suppressed from being generated and the epoxy compound is produced in a high yield. In particular, the invention provides a method for producing an epoxy compound involving oxidizing a carbon-carbon double bond in an organic compound with hydrogen peroxide in the presence of a catalyst, wherein the catalyst comprises a tungsten compound; a phosphoric acid, a phosphonic acid or salts thereof; and an onium salt having an alkyl sulfate ion represented by formula (I) as an anion: wherein R1 is a linear or branched aliphatic hydrocarbon group having 1 to 18 carbons, which may be substituted with 1 to 3 phenyl groups.Type: GrantFiled: August 19, 2019Date of Patent: November 1, 2022Assignee: ENEOS CORPORATIONInventors: Shohei Takata, Kenta Ue, Takeshi Koike, Atsushi Kameyama
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Publication number: 20210340118Abstract: The invention provides a method for producing an epoxy compound by hydrogen peroxide using an organic compound having a carbon-carbon double bond as a raw material, wherein a by-product is suppressed from being generated and the epoxy compound is produced in a high yield. In particular, the invention provides a method for producing an epoxy compound involving oxidizing a carbon-carbon double bond in an organic compound with hydrogen peroxide in the presence of a catalyst, wherein the catalyst comprises a tungsten compound; a phosphoric acid, a phosphonic acid or salts thereof; and an onium salt having an alkyl sulfate ion represented by formula (I) as an anion: wherein R1 is a linear or branched aliphatic hydrocarbon group having 1 to 18 carbons, which may be substituted with 1 to 3 phenyl groups.Type: ApplicationFiled: August 19, 2019Publication date: November 4, 2021Applicant: ENEOS CORPORATIONInventors: Shohei TAKATA, Kenta UE, Takeshi KOIKE, Atsushi KAMEYAMA
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Patent number: 11104686Abstract: The present invention discloses a composition comprising at least one or more stereoisomers of a compound represented by the following Formula (1), wherein, in a gas chromatogram obtained by analyzing the composition by gas chromatography, the ratio of the area of the maximum peak with respect to the total area of peaks derived from the stereoisomers is 90% or more. The present invention also discloses: a curable composition comprising the above described composition, and one selected from the group consisting of a thermal cationic polymerization initiator, an acid anhydride-based curing agent and a curing accelerator, and a photo-cationic polymerization initiator; as well as a cured product therefrom. The above described curable composition is useful in that it allows for the production of a cured product having a high heat resistance. (In the Formula (1), R1 to R18 are each independently selected from the group consisting of a hydrogen atom, an alkyl group and an alkoxy group.).Type: GrantFiled: June 8, 2017Date of Patent: August 31, 2021Assignee: ENEOS CorporationInventors: Shohei Takata, Ryuichi Ueno, Hisashi Sone, Atsushi Kameyama
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Publication number: 20210206916Abstract: The present invention discloses a curable composition comprising: an epoxy compound represented by the following Formula (1); and one selected from the group consisting of: a thermal cationic polymerization initiator, an acid anhydride-based curing agent and a curing accelerator, and a photo-cationic polymerization initiator as well as the cured product therefrom. The above described curable composition is useful in that it allows for the production of a cured product having a high heat resistance. (In the Formula (1), A represents CR17R18; B represents CR19R20; R1 to R20 each independently represents a substituent selected from the group consisting of a hydrogen atom, an alkyl group and an alkoxy group; and n represents 0 or 1, with the proviso that when n is 0, m represents 1, and when n is 1, m represents 0.Type: ApplicationFiled: February 18, 2021Publication date: July 8, 2021Applicant: ENEOS CORPORATIONInventors: Atsushi KAMEYAMA, Ryuichi UENO, Hisashi SONE, Shohei TAKATA, Takashi SEKI
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Patent number: 10995079Abstract: The present invention discloses a monoepoxy compound represented by the following Formula (1), a curable composition containing the same, a cured product therefrom, a method of producing the monoepoxy compound, and a reactive diluent containing the monoepoxy compound. The monoepoxy compound represented by the Formula (1) is useful in that it is capable of reducing the viscosity of a curable composition containing the monoepoxy compound, while preventing a reduction in the heat resistance of the curable composition as well as a reduction in the weight of the curable composition upon curing. (In the Formula (1), R1 to R6 are each independently selected from the group consisting of a hydrogen atom, an alkyl group, and an alkoxy group.Type: GrantFiled: March 13, 2017Date of Patent: May 4, 2021Assignee: ENEOS CORPORATIONInventors: Atsushi Kameyama, Ryuichi Ueno, Hisashi Sone, Hiroaki Suzuki, Shohei Takata, Takashi Seki
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Patent number: 10961345Abstract: The present invention discloses a curable composition comprising: an epoxy compound represented by the following Formula (1); and one selected from the group consisting of: a thermal cationic polymerization initiator, an acid anhydride-based curing agent and a curing accelerator, and a photo-cationic polymerization initiator as well as the cured product therefrom. The above described curable composition is useful in that it allows for the production of a cured product having a high heat resistance. (In the Formula (1), A represents CR17R18; B represents CR19R20; R1 to R20 each independently represents a substituent selected from the group consisting of a hydrogen atom, an alkyl group and an alkoxy group; and n represents 0 or 1, with the proviso that when n is 0, m represents 1, and when n is 1, m represents 0.Type: GrantFiled: March 22, 2017Date of Patent: March 30, 2021Assignee: ENEOS CORPORATIONInventors: Atsushi Kameyama, Ryuichi Ueno, Hisashi Sone, Shohei Takata, Takashi Seki
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Publication number: 20200308186Abstract: The present invention discloses a composition comprising at least one or more stereoisomers of a compound represented by the following Formula (1), wherein, in a gas chromatogram obtained by analyzing the composition by gas chromatography, the ratio of the area of the maximum peak with respect to the total area of peaks derived from the stereoisomers is 90% or more. The present invention also discloses: a curable composition comprising the above described composition, and one selected from the group consisting of a thermal cationic polymerization initiator, an acid anhydride-based curing agent and a curing accelerator, and a photo-cationic polymerization initiator; as well as a cured product therefrom. The above described curable composition is useful in that it allows for the production of a cured product having a high heat resistance. (In the Formula (1), R1 to R18 are each independently selected from the group consisting of a hydrogen atom, an alkyl group and an alkoxy group.Type: ApplicationFiled: June 8, 2017Publication date: October 1, 2020Applicant: JXTG NIPPON OIL & ENERGY CORPORATIONInventors: Shohei TAKATA, Ryuichi UENO, Hisashi SONE, Atsushi KAMEYAMA
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Publication number: 20200299458Abstract: The present invention discloses a curable composition comprising: an epoxy compound represented by the following Formula (1); and one selected from the group consisting of: a thermal cationic polymerization initiator, an acid anhydride-based curing agent and a curing accelerator, and a photo-cationic polymerization initiator as well as the cured product therefrom. The above described curable composition is useful in that it allows for the production of a cured product having a high heat resistance. (In the Formula (1), A represents CR17R18; B represents CR19R20; R1 to R20 each independently represents a substituent selected from the group consisting of a hydrogen atom, an alkyl group and an alkoxy group; and n represents 0 or 1, with the proviso that when n is 0, m represents 1, and when n is 1, m represents 0.Type: ApplicationFiled: March 22, 2017Publication date: September 24, 2020Applicant: JXTG NIPPON OIL & ENERGY CORPORATIONInventors: Atsushi KAMEYAMA, Ryuichi UENO, Hisashi SONE, Shohei TAKATA, Takashi SEKI
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Patent number: 10464943Abstract: The present invention discloses a composition comprising at least one or more stereoisomers of a compound represented by the following Formula (1), wherein, in a gas chromatogram obtained by analyzing the composition by gas chromatography, the ratio of the area of the maximum peak with respect to the total area of peaks derived from the stereoisomers is 60% or more; and wherein the maximum peak is present within the range of retention time of from 27.6 to 28.0 minutes. The present invention also discloses: a curable composition comprising the above described composition, and one selected from the group consisting of a thermal cationic polymerization initiator, an acid anhydride-based curing agent and a curing accelerator, and a photo-cationic polymerization initiator; as well as a cured product therefrom. The above described curable composition is useful in that it allows for the production of a cured product having a high heat resistance.Type: GrantFiled: June 8, 2017Date of Patent: November 5, 2019Assignee: JXTG NIPPON OIL & ENERGY CORPORATIONInventors: Shohei Takata, Ryuichi Ueno, Hisashi Sone, Atsushi Kameyama
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Publication number: 20190161494Abstract: The present invention discloses a composition comprising at least one or more stereoisomers of a compound represented by the following Formula (1), wherein, in a gas chromatogram obtained by analyzing the composition by gas chromatography, the ratio of the area of the maximum peak with respect to the total area of peaks derived from the stereoisomers is 60% or more; and wherein the maximum peak is present within the range of retention time of from 27.6 to 28.0 minutes. The present invention also discloses: a curable composition comprising the above described composition, and one selected from the group consisting of a thermal cationic polymerization initiator, an acid anhydride-based curing agent and a curing accelerator, and a photo-cationic polymerization initiator; as well as a cured product therefrom. The above described curable composition is useful in that it allows for the production of a cured product having a high heat resistance.Type: ApplicationFiled: June 8, 2017Publication date: May 30, 2019Applicant: JXTG NIPPON OIL & ENERGY CORPORATIONInventors: Shohei TAKATA, Ryuichi UENO, Hisashi SONE, Atsushi KAMEYAMA
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Publication number: 20190071409Abstract: The present invention discloses a monoepoxy compound represented by the following Formula (1), a curable composition containing the same, a cured product therefrom, a method of producing the monoepoxy compound, and a reactive diluent containing the monoepoxy compound. The monoepoxy compound represented by the Formula (1) is useful in that it is capable of reducing the viscosity of a curable composition containing the monoepoxy compound, while preventing a reduction in the heat resistance of the curable composition as well as a reduction in the weight of the curable composition upon curing. (In the Formula (1), R1 to R6 are each independently selected from the group consisting of a hydrogen atom, an alkyl group, and an alkoxy group.Type: ApplicationFiled: March 13, 2017Publication date: March 7, 2019Applicant: JXTG NIPPON OIL & ENERGY CORPORATIONInventors: Atsushi KAMEYAMA, Ryuichi UENO, Hisashi SONE, Hiroaki SUZUKI, Shohei TAKATA, Takashi SEKI