Patents by Inventor Mitsuteru Kondo
Mitsuteru Kondo 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: 11002883Abstract: The present invention provides a resin composition comprising a thermoplastic resin comprising a constituting unit (A) derived from a compound represented by the following general formula (1), wherein the resin composition comprises an ultraviolet absorber in an amount of 2,000 ppm to 40,000 ppm:Type: GrantFiled: November 2, 2016Date of Patent: May 11, 2021Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Noriyuki Kato, Mitsuteru Kondo, Munenori Shiratake, Kentaro Ishihara, Koji Hirose, Shinya Ikeda
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Patent number: 10962793Abstract: The present invention provides a method for producing a thermoplastic resin by reacting reactants comprising a dihydroxy compound. In this production method, the dihydroxy compound comprises a dihydroxy compound represented by the following formula (1), and at least one of a compound represented by the following formula (A), a compound represented by the following formula (B), and a compound represented by the following formula (C), wherein the total weight of the compound represented by the formula (A), the compound represented by the formula (B), and the compound represented by the formula (C) is 1,500 ppm or more, based on the weight (100 parts by weight) of the dihydroxy compound represented by the formula (1).Type: GrantFiled: April 12, 2019Date of Patent: March 30, 2021Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Noriyuki Kato, Mitsuteru Kondo, Munenori Shiratake, Kentaro Ishihara, Koji Hirose, Shinya Ikeda
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Patent number: 10955680Abstract: The present invention provides a method for producing a thermoplastic resin by reacting reactants comprising a dihydroxy compound. In this production method, the dihydroxy compound comprises a dihydroxy compound represented by the following formula (1), and at least one of a compound represented by the following formula (A), a compound represented by the following formula (B), and a compound represented by the following formula (C), wherein the total weight of the compound represented by the formula (A), the compound represented by the formula (B), and the compound represented by the formula (C) is 1,500 ppm or more, based on the weight (100 parts by weight) of the dihydroxy compound represented by the formula (1).Type: GrantFiled: November 2, 2016Date of Patent: March 23, 2021Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Noriyuki Kato, Mitsuteru Kondo, Munenori Shiratake, Kentaro Ishihara, Koji Hirose, Shinya Ikeda
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Publication number: 20210054143Abstract: Provided are a polycarbonate having an appropriate refractive index and an appropriate Abbe number, and comprehensively excelling in heat resistance, total light transmittance, and hue, and a molded article thereof. The polycarbonate includes a constituent unit represented by Formula [I] and a constituent unit having a hydrocarbon group containing a cyclic structure. In Formula [I], R1 and R2 each independently denote a hydrocarbon group, and each R3 independently denotes a hydrogen atom, a heteroatom-containing group, a halogen atom-containing group, a linear alkyl group having from 1 to 6 carbon atoms, a branched alkyl group having from 3 to 6 carbon atoms, or a group including an aryl group and having from 6 to 12 carbon atoms.Type: ApplicationFiled: March 8, 2019Publication date: February 25, 2021Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Munenori SHIRATAKE, Kentaro ISHIHARA, Koji HIROSE, Shinya IKEDA, Noriyuki KATO, Mitsuteru KONDO, Shoko SUZUKI, Kensuke OSHIMA, Shuya NAGAYAMA, Masahiro KANDA
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Publication number: 20200354299Abstract: The present invention relates to binaphthyl compounds of the formula (I), which are suitable as monomers for preparing polycarbonate resins having beneficial optical properties and which can be used for producing optical lenses: Formula (I) where X is C2-C4-alkandiyl or C1-C4-alkandiyl-C(O)—, where C(O) is bound to the oxygen atom of the hydroxyl group and where C2-C4-alkandiyl or C1-C4-alkandiyl, respectively, are unsubstituted or carry a phenyl ring; R and R? are identical or different and selected from mono or polycyclic aryl having from 6 to 36 carbon atoms and mono- or polycyclic hetaryl having a total of 5 to 36 atoms, which are ring members, where 1, 2, 3 or 4 of these atoms are selected from nitrogen, sulfur and oxygen, while the remainder of these atoms are carbon atoms, where mono- or polycyclic aryl and mono- or polycyclic hetaryl are unsubstituted or carry 1 or 2 radicals Ra, which are selected from the group consisting of CN, CH3, OCH3, O-phenyl, O-naphthyl, S-phenyl, S-naphthyl, CI or F; and, ifType: ApplicationFiled: August 29, 2018Publication date: November 12, 2020Inventors: Karl REUTER, Vasyl ANDRUSHKO, Mark KANTOR, Florian STOLZ, Noriyuki KATO, Mitsuteru KONDO, Munenori SHIRATAKE, Kentaro ISHIHARA, Shinya IKEDA, Shoko SUZUKI, Koji HIROSE, Kensuke OSHIMA, Shuya NAGAYAMA
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Publication number: 20200354516Abstract: A polycarbonate resin having a high refractive index, low Abbe number, and high moist heat resistance that includes structural units represented by general formula (1):Type: ApplicationFiled: July 29, 2020Publication date: November 12, 2020Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Noriyuki KATO, Mitsuteru KONDO, Kentaro ISHIHARA, Munenori SHIRATAKE, Koji HIROSE, Shinya IKEDA, Kensuke OSHIMA, Shuya NAGAYAMA, Shoko SUZUKI
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Patent number: 10767007Abstract: The present invention provides a polycarbonate resin having a high refractive index, low Abbe number, and high moist heat resistance. The above problem, according to one embodiment, can be solved by a polycarbonate resin including structural units represented by general formula (1).Type: GrantFiled: July 19, 2017Date of Patent: September 8, 2020Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Noriyuki Kato, Mitsuteru Kondo, Kentaro Ishihara, Munenori Shiratake, Koji Hirose, Shinya Ikeda, Kensuke Oshima, Shuya Nagayama, Shoko Suzuki
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Patent number: 10711100Abstract: The present invention provides a method for producing a thermoplastic resin by reacting reactants comprising a dihydroxy compound.Type: GrantFiled: April 12, 2019Date of Patent: July 14, 2020Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Noriyuki Kato, Mitsuteru Kondo, Munenori Shiratake, Kentaro Ishihara, Koji Hirose, Shinya Ikeda
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Publication number: 20200181325Abstract: A polycarbonate resin having a high refractive index, a low Abbe number and a high moisture and heat resistance is provided. In an embodiment, a polycarbonate resin including a structural unit represented by general formula (1) below is provided.Type: ApplicationFiled: August 29, 2018Publication date: June 11, 2020Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Munenori SHIRATAKE, Kentaro ISHIHARA, Koji HIROSE, Shinya IKEDA, Noriyuki KATO, Mitsuteru KONDO, Shoko SUZUKI, Kensuke OSHIMA, Shuya NAGAYAMA
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Patent number: 10654972Abstract: The present invention provides a method for producing a thermoplastic resin by reacting reactants comprising a dihydroxy compound.Type: GrantFiled: November 2, 2016Date of Patent: May 19, 2020Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Noriyuki Kato, Mitsuteru Kondo, Munenori Shiratake, Kentaro Ishihara, Koji Hirose, Shinya Ikeda
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Patent number: 10640642Abstract: It is an object of the present invention to provide a method for obtaining a resin composition in which coloration is suppressed. According to an embodiment, provided is a method for producing a resin composition, including: (a) obtaining a resin by polymerization of a resin raw material containing a compound represented by formula (1) below and (b) obtaining a resin composition by mixing an additive into the resin, wherein a polymerization temperature T1 in step (a) falls within the range of 230° C.<T1<250° C., and a mixing temperature T2 in step (b) falls within the range of 250° C.?T2<280° C.Type: GrantFiled: November 2, 2016Date of Patent: May 5, 2020Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Noriyuki Kato, Mitsuteru Kondo, Munenori Shiratake, Kentaro Ishihara, Koji Hirose, Shinya Ikeda
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Patent number: 10634819Abstract: Provided is a resin composition that exhibits excellent strength and fluidity. According to one embodiment, the provided resin composition contains a resin containing a repeating unit derived from a compound represented by general formula (1), and also contains a polymer having an end structure represented by general formula (A) and/or contains a compound represented by general formula (B).Type: GrantFiled: November 2, 2016Date of Patent: April 28, 2020Assignee: MlTSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Noriyuki Kato, Mitsuteru Kondo, Munenori Shiratake, Kentaro Ishihara, Koji Hirose, Shinya Ikeda
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Patent number: 10556987Abstract: The present invention provides a polycarbonate resin containing a repeating unit represented by formula (A) in the amount of 1-99.5 wt %, the polycarbonate resin also containing an oligomer having a specific structure in a total amount that constitutes a content of 2.5 wt % or lower. (In formula (A), R1 and R2 each independently represent a hydrogen atom, a phenyl group, a C1-6 alkyl group, or a C1-6 alkyloxy group).Type: GrantFiled: November 2, 2016Date of Patent: February 11, 2020Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Noriyuki Kato, Mitsuteru Kondo, Munenori Shiratake, Kentaro Ishihara, Koji Hirose, Shinya Ikeda
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Publication number: 20190241703Abstract: The present invention provides a polycarbonate resin having a high refractive index, low Abbe number, and high moist heat resistance. The above problem, according to one embodiment, can be solved by a polycarbonate resin including structural units represented by general formula (1).Type: ApplicationFiled: July 19, 2017Publication date: August 8, 2019Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Noriyuki KATO, Mitsuteru KONDO, Kentaro ISHIHARA, Munenori SHIRATAKE, Koji HIROSE, Shinya IKEDA, Kensuke OSHIMA, Shuya NAGAYAMA, Shoko SUZUKI
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Publication number: 20190233585Abstract: The present invention provides a method for producing a thermoplastic resin by reacting reactants comprising a dihydroxy compound.Type: ApplicationFiled: April 12, 2019Publication date: August 1, 2019Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Noriyuki KATO, Mitsuteru KONDO, Munenori SHIRATAKE, Kentaro ISHIHARA, Koji HIROSE, Shinya IKEDA
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Publication number: 20190235258Abstract: The present invention provides a method for producing a thermoplastic resin by reacting reactants comprising a dihydroxy compound. In this production method, the dihydroxy compound comprises a dihydroxy compound represented by the following formula (1), and at least one of a compound represented by the following formula (A), a compound represented by the following formula (B), and a compound represented by the following formula (C), wherein the total weight of the compound represented by the formula (A), the compound represented by the formula (B), and the compound represented by the formula (C) is 1,500 ppm or more, based on the weight (100 parts by weight) of the dihydroxy compound represented by the formula (1).Type: ApplicationFiled: April 12, 2019Publication date: August 1, 2019Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Noriyuki KATO, Mitsuteru KONDO, Munenori SHIRATAKE, Kentaro ISHIHARA, Koji HIROSE, Shinya IKEDA
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Publication number: 20190055351Abstract: The present invention provides a polycarbonate resin containing a repeating unit represented by formula (A) in the amount of 1-99.5 wt %, the polycarbonate resin also containing an oligomer having a specific structure in a total amount that constitutes a content of 2.5 wt % or lower. (In formula (A), R1 and R2 each independently represent a hydrogen atom, a phenyl group, a C1-6 alkyl group, or a C1-6 alkyloxy group).Type: ApplicationFiled: November 2, 2016Publication date: February 21, 2019Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Noriyuki KATO, Mitsuteru KONDO, Munenori SHIRATAKE, Kentaro ISHIHARA, Koji HIROSE, Shinya IKEDA
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Publication number: 20180321423Abstract: The present invention provides a resin composition comprising a thermoplastic resin comprising a constituting unit (A) derived from a compound represented by the following general formula (1), wherein the resin composition comprises an ultraviolet absorber in an amount of 2,000 ppm to 40,000 ppm:Type: ApplicationFiled: November 2, 2016Publication date: November 8, 2018Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Noriyuki KATO, Mitsuteru KONDO, Munenori SHIRATAKE, Kentaro ISHIHARA, Koji HIROSE, Shinya IKEDA
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Publication number: 20180312689Abstract: It is an object of the present invention to provide a method for obtaining a resin composition in which coloration is suppressed. According to an embodiment, provided is a method for producing a resin composition, including: (a) obtaining a resin by polymerization of a resin raw material containing a compound represented by formula (1) below and (b) obtaining a resin composition by mixing an additive into the resin, wherein a polymerization temperature T1 in step (a) falls within the range of 230° C.<T1<250° C., and a mixing temperature T2 in step (b) falls within the range of 250° C.?T2<280° C.Type: ApplicationFiled: November 2, 2016Publication date: November 1, 2018Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Noriyuki KATO, Mitsuteru KONDO, Munenori SHIRATAKE, Kentaro ISHIHARA, Koji HIROSE, Shinya IKEDA
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Publication number: 20180307052Abstract: The present invention provides a method for producing a thermoplastic resin by reacting reactants comprising a dihydroxy compound. In this production method, the dihydroxy compound comprises a dihydroxy compound represented by the following formula (1), and at least one of a compound represented by the following formula (A), a compound represented by the following formula (B), and a compound represented by the following formula (C), wherein the total weight of the compound represented by the formula (A), the compound represented by the formula (B), and the compound represented by the formula (C) is 1,500 ppm or more, based on the weight (100 parts by weight) of the dihydroxy compound represented by the formula (1).Type: ApplicationFiled: November 2, 2016Publication date: October 25, 2018Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Noriyuki KATO, Mitsuteru KONDO, Munenori SHIRATAKE, Kentaro ISHIHARA, Koji HIROSE, Shinya IKEDA