Patents by Inventor Yasunari Kusaka
Yasunari Kusaka 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: 11993679Abstract: A thermally conductive sheet 10 of the present invention comprises a polymer matrix 12 and an anisotropic filler 13, and the anisotropic filler 13 is oriented in a thickness direction. The anisotropic filler 13 is disposed in such a way as to fall down in a proportion of 1 to 45% in the vicinity of surfaces 10A, 10B of the thermally conductive sheet 10. According to the present invention, a thermally conductive sheet capable of sufficiently improving the thermal conductive properties in the thickness direction can be provided.Type: GrantFiled: June 18, 2019Date of Patent: May 28, 2024Assignee: SEKISUI POLYMATECH CO., LTD.Inventors: Hiroki Kudoh, Taku Sasaki, Kana Hattori, Kazuyuki Yahara, Yasunari Kusaka
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Patent number: 11987686Abstract: A thermally conductive sheet 10 comprises a polymer matrix 12 and an anisotropic filler 13, and the anisotropic filler 13 is oriented in a thickness direction. The anisotropic filler 13 is exposed on the surfaces 10A, 10B of the thermally conductive sheet 10, and the anisotropic filler 13 which is exposed is disposed in such a way as to fall down in a proportion of 3.5 to 45%.Type: GrantFiled: June 18, 2019Date of Patent: May 21, 2024Assignee: SEKISUI POLYMATECH CO., LTD.Inventors: Hiroki Kudoh, Taku Sasaki, Kana Hattori, Kazuyuki Yahara, Yasunari Kusaka
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Patent number: 11947144Abstract: The present invention relates to a polyvinyl alcohol film comprising a vinyl alcohol-based polymer, the polyvinyl alcohol film having an NMR signal intensity at 0.10 milliseconds of 78% or less of the initial intensity, when the polyvinyl alcohol film after immersing in water at 60° C. for 2 hours is measured as a measurement sample by a solid echo method using pulse NMR at 60° C. According to the polyvinyl alcohol film of the present invention, a polarizing film having good polarization performance, which is unlikely to decrease even under high humidity, can be manufactured.Type: GrantFiled: March 28, 2019Date of Patent: April 2, 2024Assignee: SEKISUI CHEMICAL CO., LTD.Inventors: Yohei Nishimura, Yasunari Kusaka, Nami Nakajima
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Patent number: 11859063Abstract: A polyvinyl alcohol film comprises a vinyl alcohol-based polymer, wherein, when the polyvinyl alcohol film being measured by a solid echo method using pulse NMR at 60° C. for waveform separation of a free induction decay curve of 1H spin-spin relaxation into three curves derived from three components a component A, a component B, and a component C in order of short relaxation time, the component A has a resulting relaxation time of 0.0070 milliseconds or more and 0.0092 milliseconds or less, and a resulting component ratio of 20% or more and 50% or less.Type: GrantFiled: March 28, 2019Date of Patent: January 2, 2024Assignee: SEKISUI CHEMICAL CO., LTD.Inventors: Yohei Nishimura, Yasunari Kusaka, Nami Nakajima
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Publication number: 20230250201Abstract: The present invention provides a chlorinated polyvinyl chloride resin that enables the production of a molded article that maintains high adhesion strength even when used in a form subjected to high pressure and is less susceptible to defects such as cracks due to insufficient strength, as well as a resin composition for molding and a molded article each including the chlorinated polyvinyl chloride resin. Provided is a chlorinated polyvinyl chloride resin having an average of a ratio (A/B) of a peak intensity A observed in a range of 300 to 340 cm-1 to a peak intensity B observed in a range of 1,450 to 1,550 cm-1 of 0.1 or more and 3.5 or less in Raman imaging measurement by Raman spectroscopy.Type: ApplicationFiled: March 29, 2021Publication date: August 10, 2023Applicant: SEKISUI CHEMICAL CO., LTD.Inventors: Kenichi MATSUMURA, Nozomi EGUCHI, Isao HIGUCHI, Yasunari KUSAKA
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Publication number: 20230148238Abstract: The present invention provides a chlorinated polyvinyl chloride resin that enables the production of a molded article that maintains high adhesion strength even when used in a form subjected to high pressure and is less susceptible to defects such as cracks due to insufficient strength, as well as a resin composition for molding and a molded article each including the chlorinated polyvinyl chloride resin. Provided is a chlorinated polyvinyl chloride resin, containing two components including a A30 component and a B30 component, the A30 component and the B30 component being determined by measuring the resin by a solid echo method using pulse NMR at 30° C.Type: ApplicationFiled: March 30, 2021Publication date: May 11, 2023Applicant: SEKISUI CHEMICAL CO., LTD.Inventors: Ryota YAMASUGI, Mitsuo MATSUMOTO, Nami NAKAJIMA, Yasunari KUSAKA
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Publication number: 20230145047Abstract: The present invention provides a chlorinated polyvinyl chloride resin that provides a molded article having excellent heat cycle characteristics and excellent weather resistance, as well as a resin composition for molding and a molded article each including the chlorinated polyvinyl chloride resin. Provided is a chlorinated polyvinyl chloride resin having an average of a ratio (A/B) of a peak intensity A observed in a range of 300 to 340 cm-1 to a peak intensity B observed in a range of 1,450 to 1,550 cm-1 of 3.5 to 40.0 in Raman imaging measurement by Raman spectroscopy.Type: ApplicationFiled: March 29, 2021Publication date: May 11, 2023Applicant: SEKISUI CHEMICAL CO., LTD.Inventors: Nozomi EGUCHI, Kenichi MATSUMURA, Isao HIGUCHI, Yasunari KUSAKA
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Publication number: 20230128429Abstract: The present invention provides a chlorinated polyvinyl chloride resin that provides a molded article having excellent heat cycle characteristics and excellent weather resistance, as well as a resin composition for molding and a molded article each including the chlorinated polyvinyl chloride resin. Provided is a chlorinated polyvinyl chloride resin, containing two components including a A30 component and a B30 component, the A30 component and the B30 component being determined by measuring the resin by a solid echo method using pulse NMR at 30° C. to give a free induction decay curve of 1H spin-spin relaxation, and subjecting the free induction decay curve to waveform separation into two curves derived from the A30 component and the B30 component in order of shorter relaxation time using the least square method, and having a ratio of T5B to TB [T5B/TB] of 96% or more and 120% or less, where TB is a relaxation time of the B30 component and T5B is a relaxation time of the B30 component after heating at 200° C.Type: ApplicationFiled: March 30, 2021Publication date: April 27, 2023Applicant: SEKISUI CHEMICAL CO., LTD.Inventors: Mitsuo MATSUMOTO, Ryota YAMASUGI, Nami NAKAJIMA, Yasunari KUSAKA
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Publication number: 20220363887Abstract: The present invention aims to provide a resin composition for molding that makes it possible to achieve excellent continuous productivity and to produce a molded article having high surface smoothness, capable of reducing defective molding, less likely to crack during use, and also having excellent shock resistance. The present invention also aims to provide a molded article including the resin composition for molding. Provided is a resin composition for molding, containing: a chlorinated polyvinyl chloride resin; and a melt additive, the resin composition containing three components including a A100 component, a B100 component, and a C100 component, and having a percentage of the C100 component [C100 component/(A100 component+B100 component+C100 component)] of 30% or less, the three components being identified by measuring the resin composition by a solid echo method using pulse NMR at 100° C.Type: ApplicationFiled: September 29, 2020Publication date: November 17, 2022Applicant: SEKISUI CHEMICAL CO., LTD.Inventors: Mitsuo MATSUMOTO, Ryota YAMASUGI, Tomohiro HORINOUCHI, Yoshito ARAI, Yasunari KUSAKA, Nami NAKAJIMA
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Publication number: 20220348755Abstract: The present invention provides a resin composition for molding having excellent thermal meltability and capable of providing a molded article that is less likely to crack from a resin weld during use and has excellent surface gloss, and a molded article including the resin composition for molding. Provided is a resin composition for molding, containing: a chlorinated polyvinyl chloride resin; a polyvinyl chloride resin; and a melt additive, the resin composition having an area ratio of a peak B observed in a range of 0.6 to 1.0 ppm to a peak A observed in a range of 9.5 to 10 ppm (Area of peak B/Area of peak A) of 1 to 1,000 when a 1H NMR spectrum is measured by solution NMR.Type: ApplicationFiled: September 29, 2020Publication date: November 3, 2022Applicant: SEKISUI CHEMICAL CO., LTD.Inventors: Tomohiro HORINOUCHI, Mitsuo MATSUMOTO, Ryota YAMASUGI, Yoshito ARAI, Yasunari KUSAKA, Nami NAKAJIMA
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Patent number: 11377506Abstract: The present invention provides a vinyl alcohol-vinyl acetate copolymer having excellent solubility and capable of providing a film having high flexibility, high mechanical strength, and high adhesion, and a method for producing a vinyl alcohol-vinyl acetate copolymer. Provided is a vinyl alcohol-vinyl acetate copolymer including a unit of vinyl alcohol and a unit of vinyl acetate, the vinyl alcohol-vinyl acetate copolymer having a triad unit chain ratio TOO of 7.5 or less, where the triad unit chain ratio TOO is obtained using the following formula (1): [ Math .Type: GrantFiled: November 14, 2018Date of Patent: July 5, 2022Assignees: TOKUSHIMA UNIVERSITY, SEKISUI CHEMICAL CO., LTD.Inventors: Koichi Ute, Tomohiro Hirano, Miyuki Oshimura, Yasunari Kusaka, Yohei Nishimura, Misaki Senoo
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Publication number: 20220153983Abstract: The present invention provides a chlorinated polyvinyl chloride resin that has resistance to thermal decomposition, provides excellent continuous productivity in molding, and imparts both processability and unevenness-preventing properties to a molded article. The present invention relates to a chlorinated polyvinyl chloride resin, containing three components including a A150 component, a B150 component, and a C150 component, and having a percentage of the C150 component (C150 component/(A150 component+B150 component+C150 component)) of less than 8.0%, the three components being identified by measuring the chlorinated polyvinyl chloride resin by a solid echo method using pulse NMR at 150° C. to give a free induction decay curve of 1H spin-spin relaxation, and subjecting the free induction decay curve to waveform separation into three curves derived from the A150 component, the B150 component, and the C150 component in order of shorter relaxation time using the least square method.Type: ApplicationFiled: March 27, 2020Publication date: May 19, 2022Applicants: SEKISUI CHEMICAL CO., LTD., TOKUYAMA SEKISUI CO., LTD.Inventors: Kenichi MATSUMURA, Norikazu MASHINO, Kento MURAKAMI, Nami NAKAJIMA, Yasunari KUSAKA, Takehisa SUGAYA, Masahiko YAMAGATA
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Publication number: 20220144979Abstract: The present invention provides a chlorinated polyvinyl chloride resin that enables excellent continuous productivity in molding and that enables a molded article to have both processability and unevenness-preventing properties. Provided is a chlorinated polyvinyl chloride resin having, in Raman measurement by Raman spectroscopy, an average of a ratio (A/B) of a peak intensity A observed in a range of 660 to 700 cm?1 to a peak intensity B observed in a range of 600 to 650 cm?1 of 0.50 to 2.00, and a standard deviation of the A/B of 0.090 or less.Type: ApplicationFiled: March 27, 2020Publication date: May 12, 2022Applicants: SEKISUI CHEMICAL CO., LTD., TOKUYAMA SEKISUI CO., LTD.Inventors: Norikazu MASHINO, Kento MURAKAMI, Isao HIGUCHI, Yasunari KUSAKA, Takashi MURAMOTO
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Publication number: 20220145061Abstract: The present invention provides a chlorinated polyvinyl chloride resin that not only has high heat resistance and high mechanical strength but also is excellent in molding processability and is very easy to soften and additionally enables production of a molded article with high gloss. The present invention relates to a chlorinated polyvinyl chloride resin, containing three components including a A150 component, a B150 component, and a C150 component, and having a percentage of the C150 component (C150 component/(A150 component+B150 component+C150 component)) of 8.0% or more and 30.0% or less, the three components being identified by measuring the chlorinated polyvinyl chloride resin by a solid echo method using pulse NMR at 150° C.Type: ApplicationFiled: March 27, 2020Publication date: May 12, 2022Applicants: SEKISUI CHEMICAL CO., LTD., TOKUYAMA SEKISUI CO., LTD.Inventors: Kenichi MATSUMURA, Norikazu MASHINO, Kento MURAKAMI, Nami NAKAJIMA, Yasunari KUSAKA, Takehisa SUGAYA, Masahiko YAMAGATA
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Publication number: 20220135783Abstract: The present invention provides a chlorinated polyvinyl chloride resin that enables a molded article to have both processability and unevenness-preventing properties and also high gloss. Provided is a chlorinated polyvinyl chloride resin having an average of a ratio (A/B) of a peak intensity A observed in a range of 660 to 700 cm?1 to a peak intensity B observed in a range of 600 to 650 cm1 of 0.50 to 2.00 in Raman imaging measurement by Raman spectroscopy, and having a standard deviation of the ratio (A/B) of the peak intensity A to the peak intensity B of 0.100 to 0.200 in Raman measurement by Raman spectroscopy.Type: ApplicationFiled: March 27, 2020Publication date: May 5, 2022Applicants: SEKISUI CHEMICAL CO., LTD., TOKUYAMA SEKISUI CO., LTD.Inventors: Kento MURAKAMI, Norikazu MASHINO, Isao HIGUCHI, Yasunari KUSAKA
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Publication number: 20220127390Abstract: The present invention provides a chlorinated polyvinyl chloride resin that enables excellent continuous productivity in molding and that enables a molded article to have both processability and unevenness-preventing properties. Provided is a chlorinated polyvinyl chloride resin having an average of a ratio (A/B) of a peak intensity A observed in a range of 660 to 700 cm?1 to a peak intensity B observed in a range of 600 to 650 cm?1 of 0.50 to 2.00 in Raman imaging measurement by Raman spectroscopy.Type: ApplicationFiled: March 27, 2020Publication date: April 28, 2022Applicants: SEKISUI CHEMICAL CO., LTD., TOKUYAMA SEKISUI CO., LTD.Inventors: Kento MURAKAMI, Norikazu MASHINO, Isao HIGUCHI, Yasunari KUSAKA
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Publication number: 20220056169Abstract: A vinyl alcohol-based polymer according to one embodiment of the present invention has an integral value (e) of 0.8 to 20 in the case when a sum of the following integral value (a) to (e) is 100 in a 1H-NMR spectrum. (a) integral value of peak confirmed at 5.70 to 5.96 ppm (b) integral value of peak confirmed at 5.97 to 6.63 ppm (c) integral value of peak confirmed at 6.64 to 7.55 ppm (d) integral value of peak confirmed at 7.56 to 7.81 ppm (e) integral value of peak confirmed at 7.82 to 8.Type: ApplicationFiled: December 26, 2019Publication date: February 24, 2022Applicants: SEKISUI CHEMICAL CO., LTD., Sekisui Specialty Chemicals America, LLCInventors: Yohei Nishimura, Junichi Niino, Yasunari Kusaka, Nami Nakajima, Hidehiro Yamaguchi
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Publication number: 20210395476Abstract: The present invention provides a polyolefin resin foam sheet having an area density of 5 g/m2 or more and 400 g/m2 or less, and satisfying at least one of the following conditions (1) and (2) in thermogravimetric-mass spectrometry carried out at a heating rate of 10° C.min over an entire measurement temperature range of a 200 to 550° C. measurement temperature, condition (1): a combustion gas generation ratio X defined as a ratio of a peak area value of an amount of a combustion gas P having a mass-to-charge ratio m/z of 55 generated at a measurement temperature of 200 to 364° C. with respect to the peak area value of an amount of the combustion gas P generated over the entire measurement temperature range is 25% or less; and condition (2): a combustion gas generation ratio Y defined as a ratio of a peak area value of an amount of a combustion gas Q having a mass-to-charge ratio m/z of 69 generated at a measurement temperature of 200 to 364° C.Type: ApplicationFiled: September 27, 2019Publication date: December 23, 2021Applicant: SEKISUI CHEMICAL CO., LTD.Inventors: Asami NAGAI, Daisuke MUKOHATA, Yasunari KUSAKA, Yoshito ARAI
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Publication number: 20210261737Abstract: A thermally conductive sheet 10 of the present invention comprises a polymer matrix 12 and an anisotropic filler 13, and the anisotropic filler 13 is oriented in a thickness direction. The anisotropic filler 13 is disposed in such a way as to fall down in a proportion of 1 to 45% in the vicinity of surfaces 10A, 10B of the thermally conductive sheet 10. According to the present invention, a thermally conductive sheet capable of sufficiently improving the thermal conductive properties in the thickness direction can be provided.Type: ApplicationFiled: June 18, 2019Publication date: August 26, 2021Applicant: SEKISUI POLYMATECH CO., LTD.Inventors: Hiroki KUDOH, Taku SASAKI, Kana HATTORI, Kazuyuki YAHARA, Yasunari KUSAKA
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Publication number: 20210130570Abstract: A thermally conductive sheet 10 comprises a polymer matrix 12 and an anisotropic filler 13, and the anisotropic filler 13 is oriented in a thickness direction. The anisotropic filler 13 is exposed on the surfaces 10A, 10B of the thermally conductive sheet 10, and the anisotropic filler 13 which is exposed is disposed in such a way as to fall down in a proportion of 3.5 to 45%.Type: ApplicationFiled: June 18, 2019Publication date: May 6, 2021Applicant: SEKISUI POLYMATECH CO., LTD.Inventors: Hiroki KUDOH, Taku SASAKI, Kana HATTORI, Kazuyuki YAHARA, Yasunari KUSAKA