Patents by Inventor Aki Yamada
Aki Yamada 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: 20230116659Abstract: A polycarbonate-polyorganosiloxane copolymer comprises a polycarbonate block (A-1) formed of a repeating unit with a specific structure and a polyorganosiloxane block (A-2) containing a repeating unit with a specific structure. A difference between the haze value (haze A) after retention for 3 minutes and the haze value (haze B) after retention for 20 minutes, of the polycarbonate-polyorganosiloxane copolymer or a resin composition thereof at 300° C. or 340° C., ?haze, is less than 0.4.Type: ApplicationFiled: December 25, 2020Publication date: April 13, 2023Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Yasuhiro ISHIKAWA, Hajime WATANABE, Aki YAMADA
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Publication number: 20210284837Abstract: Provided are a polycarbonate-based resin composition, including: 99 mass % to 1 mass % of a polycarbonate-polyorganosiloxane copolymer (A) having a predetermined repeating unit (A-1) and predetermined constituent units (A-2) and (A-3); and 1 mass % to 99 mass % of a polycarbonate-based resin (B) except the polycarbonate-polyorganosiloxane copolymer (A), and a molded body thereof.Type: ApplicationFiled: October 3, 2017Publication date: September 16, 2021Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Yasuhiro ISHIKAWA, Aki YAMADA
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Patent number: 11066556Abstract: Provided is a polycarbonate-based resin composition containing: a polycarbonate-polyorganosiloxane copolymer (A-1) which contains a specific repeating unit and in which a polyorganosiloxane block has an average chain length of 20 or more and less than 60; a polycarbonate-polyorganosiloxane copolymer (A-2) which contains a specific repeating unit and in which a polyorganosiloxane block has an average chain length of 60 or more and less than 500; and a polycarbonate-based resin (A-3) except the polycarbonate-polyorganosiloxane copolymer (A-1) and the polycarbonate-polyorganosiloxane copolymer (A-2), wherein the ratio of the polycarbonate-based resin (A-3) to the total weight of the polycarbonate-polyorganosiloxane copolymer (A-1), the polycarbonate-polyorganosiloxane copolymer (A-2), and the polycarbonate-based resin (A-3) is 10 mass % or more.Type: GrantFiled: December 13, 2016Date of Patent: July 20, 2021Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Aki Yamada, Yasuhiro Ishikawa
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Publication number: 20210206967Abstract: Provided is a polycarbonate-based resin having a ratio of an amine terminal to all terminal groups of 1.0 mol % or more.Type: ApplicationFiled: May 31, 2019Publication date: July 8, 2021Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Koichi SUGA, Yumi NAKAYAMA, Aki YAMADA
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Patent number: 10975195Abstract: Provided is a polycarbonate-based resin composition, including: 10 to 90 mass % of a polycarbonate-polyorganosiloxane copolymer (E-1); and 10 to 90 mass % of an aromatic polycarbonate resin (E-2) except the polycarbonate-polyorganosiloxane copolymer (E-1), in which the molecular weight distribution of the polyorganosiloxane block of the polycarbonate-polyorganosiloxane copolymer is controlled within a specific region.Type: GrantFiled: March 29, 2016Date of Patent: April 13, 2021Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Aki Yamada, Yasuhiro Ishikawa
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Patent number: 10975225Abstract: Provided is a polycarbonate-based resin composition, including 0.Type: GrantFiled: May 24, 2016Date of Patent: April 13, 2021Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Aki Yamada, Yasuhiro Ishikawa
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Patent number: 10975224Abstract: Provided is a polycarbonate-based resin composition containing a polycarbonate-based resin containing a polycarbonate-polyorganosiloxane copolymer, and 0.01 to 1.0 part by mass of a UV absorber with respect to 100 parts by mass of the polycarbonate-based resin, in which the molecular weight distribution of a polyorganosiloxane block in the polycarbonate-polyorganosiloxane copolymer is controlled within a specific region.Type: GrantFiled: March 29, 2016Date of Patent: April 13, 2021Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Aki Yamada, Yasuhiro Ishikawa
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Patent number: 10717845Abstract: Provided is a polycarbonate-based resin composition containing a polycarbonate-based resin containing a predetermined polycarbonate-polyorganosiloxane copolymer, and 0.5 to 5 parts by mass of a white pigment with respect to 100 parts by mass of the polycarbonate-based resin, in which the molecular weight distribution of a polyorganosiloxane block in the polycarbonate-polyorganosiloxane copolymer is controlled within a specific region.Type: GrantFiled: March 11, 2016Date of Patent: July 21, 2020Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Yasuhiro Ishikawa, Aki Yamada, Yusuke Aoki
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Publication number: 20200148834Abstract: Provided is a carbonate-olefin-based copolymer including a polycarbonate block, an olefin-based polymer block, and a specific constituent unit.Type: ApplicationFiled: July 26, 2018Publication date: May 14, 2020Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Aki YAMADA, Koichi SUGA
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Publication number: 20180355178Abstract: Provided is a polycarbonate-based resin composition containing: a polycarbonate-polyorganosiloxane copolymer (A-1) which contains a specific repeating unit and in which a polyorganosiloxane block has an average chain length of 20 or more and less than 60; a polycarbonate-polyorganosiloxane copolymer (A-2) which contains a specific repeating unit and in which a polyorganosiloxane block has an average chain length of 60 or more and less than 500; and a polycarbonate-based resin (A-3) except the polycarbonate-polyorganosiloxane copolymer (A-1) and the polycarbonate-polyorganosiloxane copolymer (A-2), wherein the ratio of the polycarbonate-based resin (A-3) to the total weight of the polycarbonate-polyorganosiloxane copolymer (A-1), the polycarbonate-polyorganosiloxane copolymer (A-2), and the polycarbonate-based resin (A-3) is 10 mass % or more.Type: ApplicationFiled: December 13, 2016Publication date: December 13, 2018Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Aki YAMADA, Yasuhiro ISHIKAWA
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Publication number: 20180355177Abstract: Provided is a method of producing a polycarbonate-based resin composition, comprising using a polycarbonate-based resin containing a polycarbonate-polyorganosiloxane copolymer (A) as a raw material, and the step incorporating at least one of a styrene-based resin (B), a flame retardant (C), a flame retardant aid (D), and an inorganic filler (E) into the resin, wherein the copolymer having the following features: the copolymer has a specific polycarbonate block (A-1) and a specific polyorganosiloxane block (A-2); and in a differential molecular weight distribution curve obtained from measurement of the polyorganosiloxane block (A-2) by gel permeation chromatography using the polystyrene calibration curve, the curve having the axis of abscissa indicating a logarithmic value log(M) of a molecular weight M and the axis of ordinate indicating dw/d log(M) obtained by differentiating a concentration fraction w with respect to the logarithmic value log(M) of the molecular weight, (1) a dw/d log(M) value becomes maximType: ApplicationFiled: May 24, 2016Publication date: December 13, 2018Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Aki Yamada, Yasuhiro Ishikawa
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Publication number: 20180237609Abstract: Provided is a polycarbonate-based resin composition containing a polycarbonate-based resin containing a predetermined polycarbonate-polyorganosiloxane copolymer, and 0.5 to 5 parts by mass of a white pigment with respect to 100 parts by mass of the polycarbonate-based resin, in which the molecular weight distribution of a polyorganosiloxane block in the polycarbonate-polyorganosiloxane copolymer is controlled within a specific region.Type: ApplicationFiled: March 11, 2016Publication date: August 23, 2018Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Yasuhiro ISHIKAWA, Aki YAMADA, Yusuke AOKI
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Publication number: 20180171108Abstract: Provided is a polycarbonate-based resin composition, including 0.Type: ApplicationFiled: May 24, 2016Publication date: June 21, 2018Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Aki Yamada, Yasuhiro Ishikawa
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Publication number: 20180127542Abstract: Provided is a polycarbonate-based resin composition, including: 10 to 90 mass % of a polycarbonate-polyorganosiloxane copolymer (E-1); and 10 to 90 mass % of an aromatic polycarbonate resin (E-2) except the polycarbonate-polyorganosiloxane copolymer (E-1), in which the molecular weight distribution of the polyorganosiloxane block of the polycarbonate-polyorganosiloxane copolymer is controlled within a specific region.Type: ApplicationFiled: March 29, 2016Publication date: May 10, 2018Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Aki YAMADA, Yasuhiro ISHIKAWA
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Publication number: 20180057661Abstract: Provided is a polycarbonate-based resin composition containing a polycarbonate-based resin containing a polycarbonate-polyorganosiloxane copolymer, and 0.01 to 1.0 part by mass of a UV absorber with respect to 100 parts by mass of the polycarbonate-based resin, in which the molecular weight distribution of a polyorganosiloxane block in the polycarbonate-polyorganosiloxane copolymer is controlled within a specific region.Type: ApplicationFiled: March 29, 2016Publication date: March 1, 2018Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Aki YAMADA, Yasuhiro ISHIKAWA
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Patent number: 9365683Abstract: Provided is a polycarbonate-polyorganosiloxane copolymer, including a specific polycarbonate block unit (A) and a specific polyorganosiloxane block unit (B), in which in a differential molecular weight distribution curve obtained from measurement of the polyorganosiloxane block unit (B) by gel permeation chromatography using the polystyrene calibration curve, the curve having an axis of abscissa indicating a logarithmic value log(M) of a molecular weight M and an axis of ordinate indicating dw/d log(M) obtained by differentiating a concentration fraction w with respect to the logarithmic value log(M) of the molecular weight, (1) a dw/d log(M) value becomes maximum in a range of 3.4?log(M)?4.0, and (2) in the differential molecular weight distribution curve, a ratio of a value obtained by integrating the dw/d log(M) value over a range of 4.0?Log(M)?4.5 to a value obtained by integrating the dw/d log(M) value over the entire range of the log(M) is 6% or more and 40% or less.Type: GrantFiled: September 22, 2014Date of Patent: June 14, 2016Assignee: IDEMITSU KOSAN CO., LTD.Inventor: Aki Yamada
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Publication number: 20160083513Abstract: Provided is a polycarbonate resin for a liquid crystal member, which is produced by using an end terminator containing 3-pentadecylphenol obtained from a natural product, and which has a YI value of 1.1 or less or a light transmittance at a wavelength of 400 nm of 85% or more.Type: ApplicationFiled: April 17, 2014Publication date: March 24, 2016Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Junpei MARUYAMA, Hironori TASHIRO, Toshifumi MIYAGAWA, Masayuki SHIBATA, Aki YAMADA, Koichi SUGA, Yumi NAKAYAMA
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Publication number: 20160017102Abstract: Provided is a polycarbonate-polyorganosiloxane copolymer, including a specific polycarbonate block unit (A) and a specific polyorganosiloxane block unit (B), in which in a differential molecular weight distribution curve obtained from measurement of the polyorganosiloxane block unit (B) by gel permeation chromatography using the polystyrene calibration curve, the curve having an axis of abscissa indicating a logarithmic value log(M) of a molecular weight M and an axis of ordinate indicating dw/d log(M) obtained by differentiating a concentration fraction w with respect to the logarithmic value log(M) of the molecular weight, (1) a dw/d log(M) value becomes maximum in a range of 3.4?log(M)?4.0, and (2) in the differential molecular weight distribution curve, a ratio of a value obtained by integrating the dw/d log(M) value over a range of 4.0?Log(M)?4.5 to a value obtained by integrating the dw/d log(M) value over the entire range of the log(M) is 6% or more and 40% or less.Type: ApplicationFiled: September 22, 2014Publication date: January 21, 2016Applicant: IDEMITSU KOSAN CO., LTD.Inventor: Aki YAMADA
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Publication number: 20110245389Abstract: A polycarbonate resin composition that is enhanced in flame retardancy while maintaining transparency containing (A) a polycarbonate resin component containing from 10 to 90% by mass of (A-1) an aromatic polycarbonate resin containing a dihydroxybiphenyl as a part of a dihydric phenol, from 10 to 90% by mass of (A-2) an aromatic polycarbonate-polyorganosiloxane copolymer, and from 0 to 80% by mass of (A-3) an aromatic polycarbonate resin other than (A-1) and (A-2), and a molded product thereof. In the flame retardant polycarbonate resin composition, the content of the polyorganosiloxane in (A) is preferably from 0.3 to 1.6% by mass, and the composition may contain from 0.01 to 1 part by mass of (B) an organic metal salt per 100 parts by mass of (A).Type: ApplicationFiled: September 18, 2009Publication date: October 6, 2011Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Aki Yamada, Koichi Suga