Patents by Inventor Hiroaki Motegi
Hiroaki Motegi 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).
-
Patent number: 10059800Abstract: A method of producing a polycarbonate, including: introducing a tertiary amine into a reaction process; and performing interfacial polycondensation between an alkali aqueous solution of a dihydric phenol and phosgene in the presence of an organic solvent, in which: (i) a portion into which the tertiary amine is introduced comprises at least a tertiary amine storage tank, a tertiary amine supply pipe, and a diluent solvent supply pipe; (ii) the portion further includes a pressure control valve in the tertiary amine supply pipe on an upstream side of a merging portion with the diluent solvent supply pipe; and (iii) when a pressure P1 of an inside of the tertiary amine storage tank pressurized by a pressurization gas and a pressure P2 in a portion ranging from an outlet of the storage tank to an upstream side of the pressure control valve, a relationship of P1?P2 is satisfied.Type: GrantFiled: December 10, 2015Date of Patent: August 28, 2018Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Kenji Sasaki, Masayuki Takahashi, Hiroaki Motegi
-
Patent number: 9850351Abstract: Provided are a polycarbonate-polyorganosiloxane copolymer having a carbon tetrachloride concentration of less than 4 ppm by mass, and the following production method for producing the polycarbonate-polyorganosiloxane copolymer.Type: GrantFiled: May 11, 2016Date of Patent: December 26, 2017Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Yukiko Nagao, Yasuhiro Ishikawa, Hiroaki Motegi
-
Publication number: 20170349704Abstract: A method of producing a polycarbonate, including: introducing a tertiary amine into a reaction process; and performing interfacial polycondensation between an alkali aqueous solution of a dihydric phenol and phosgene in the presence of an organic solvent, in which: (i) a portion into which the tertiary amine is introduced comprises at least a tertiary amine storage tank, a tertiary amine supply pipe, and a diluent solvent supply pipe; (ii) the portion further includes a pressure control valve in the tertiary amine supply pipe on an upstream side of a merging portion with the diluent solvent supply pipe; and (iii) when a pressure P1 of an inside of the tertiary amine storage tank pressurized by a pressurization gas and a pressure P2 in a portion ranging from an outlet of the storage tank to an upstream side of the pressure control valve, a relationship of P1?P2 is satisfied.Type: ApplicationFiled: December 10, 2015Publication date: December 7, 2017Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Kenji SASAKI, Masayuki TAKAHASHI, Hiroaki MOTEGI
-
Publication number: 20170313824Abstract: Provided is a method of producing a polycarbonate-polyorganosiloxane copolymer, including: a first reaction zone into which a polycarbonate oligomer, a polyorganosiloxane, and a caustic alkali are introduced to provide a reaction liquid containing the polycarbonate oligomer that has reacted with the polyorganosiloxane; and a second reaction zone into which the reaction liquid obtained from the first reaction zone, an alkaline aqueous solution of a dihydric phenol, a specific end terminator, and the caustic alkali are introduced to provide a polycondensation reaction liquid, in which a total amount of the caustic alkali to be introduced into the second reaction zone is introduced from an introduction port of the second reaction zone to perform a reaction.Type: ApplicationFiled: November 17, 2015Publication date: November 2, 2017Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Yukiko NAGAO, Toshiyuki YASUDA, Hiroaki MOTEGI
-
Publication number: 20160257790Abstract: Provided are a polycarbonate-polyorganosiloxane copolymer having a carbon tetrachloride concentration of less than 4 ppm by mass, and the following production method for producing the polycarbonate-polyorganosiloxane copolymer.Type: ApplicationFiled: May 11, 2016Publication date: September 8, 2016Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Yukiko NAGAO, Yasuhiro ISHIKAWA, Hiroaki MOTEGI
-
Patent number: 9371419Abstract: Provided are a polycarbonate-polyorganosiloxane copolymer having a carbon tetrachloride concentration of less than 4 ppm by mass, and the following production method for producing the polycarbonate-polyorganosiloxane copolymer.Type: GrantFiled: June 26, 2013Date of Patent: June 21, 2016Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Yukiko Nagao, Yasuhiro Ishikawa, Hiroaki Motegi
-
Patent number: 9359473Abstract: Provided is a method for economically and stably producing a high-quality polycarbonate-polyorganosiloxane copolymer excellent in, for example, transparency and impact resistance in a continuous manner.Type: GrantFiled: October 10, 2013Date of Patent: June 7, 2016Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Yukiko Nagao, Yasuhiro Ishikawa, Hiroaki Motegi
-
Publication number: 20150267003Abstract: Provided is a method for economically and stably producing a high-quality polycarbonate-polyorganosiloxane copolymer excellent in, for example, transparency and impact resistance in a continuous manner.Type: ApplicationFiled: October 10, 2013Publication date: September 24, 2015Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Yukiko Nagao, Yasuhiro Ishikawa, Hiroaki Motegi
-
Patent number: 9139701Abstract: The present invention provides a method for producing a polycarbonate-polyorganosiloxane copolymer economically and stably, in particular, the present invention is concerned with a method for continuous production of a polycarbonate-polyorganosiloxane copolymer including (A) a step of withdrawing a polymerization reaction solution obtained by polymerizing a dihydric phenol compound, a carbonate precursor, and a polyorganosiloxane in the presence of an alkaline compound aqueous solution and a water-insoluble organic solvent continuously or intermittently from a reactor; (B) a step of separating the polymerization reaction solution withdrawn in the step (A) into an aqueous phase and a water-insoluble organic solvent phase; and (C) a step of after washing the water-insoluble organic solvent phase separated in the step (B) with an acidic aqueous solution, separating the resultant into an aqueous phase and a water-insoluble organic solvent phase, wherein the content of the polycarbonate-polyorganosiloxane copolymeType: GrantFiled: November 16, 2012Date of Patent: September 22, 2015Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Yasuhiro Ishikawa, Hiroaki Motegi, Yukiko Nagao
-
Patent number: 9080021Abstract: Provided is a polycarbonate-polyorganosiloxane copolymer having high impact resistance and excellent transparency, in particular, a high total light transmittance and a small haze, and a method of producing thereof. Specifically, provided is a polycarbonate-polyorganosiloxane copolymer, containing a main chain having a repeating unit represented by the following general formula (I) and a constituent unit represented by the following general formula (II), in which: n in the general formula (II) is 25 to 50; and the copolymer satisfies the following conditions (a) and (b): (a) a molded article having a thickness of 2 mm made of the copolymer has a total light transmittance measured based on ISO 13468 of 88% or more and a haze measured based on ISO 14782 of 0.7% or less; and (b) a molded article having a thickness of 3 mm made of the copolymer has a total light transmittance measured based on ISO 13468 of 88% or more and a haze measured based on ISO 14782 of 1.0% or less.Type: GrantFiled: October 15, 2012Date of Patent: July 14, 2015Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Yasuhiro Ishikawa, Yukiko Nagao, Hiroaki Motegi
-
Publication number: 20150166733Abstract: Provided are a polycarbonate-polyorganosiloxane copolymer having a carbon tetrachloride concentration of less than 4 ppm by mass, and the following production method for producing the polycarbonate-polyorganosiloxane copolymer.Type: ApplicationFiled: June 26, 2013Publication date: June 18, 2015Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Yukiko Nagao, Yasuhiro Ishikawa, Hiroaki Motegi
-
Patent number: 9045586Abstract: The present invention provides a method for producing a polycarbonate-polyorganosiloxane copolymer economically and stably, in particular, the present invention is concerned with a method for continuous production of a polycarbonate-polyorganosiloxane copolymer including (A) a step of withdrawing a polymerization reaction solution obtained by polymerizing a dihydric phenol compound, a carbonate precursor, and a polyorganosiloxane in the presence of an alkaline compound aqueous solution and a water-insoluble organic solvent continuously or intermittently from a reactor; (B) a step of separating the polymerization reaction solution withdrawn in the step (A) into an aqueous phase and a water-insoluble organic solvent phase; and (C) a step of after washing the water-insoluble organic solvent phase separated in the step (B) with an acidic aqueous solution, separating the resultant into an aqueous phase and a water-insoluble organic solvent phase, wherein the aqueous phase separated in the step (C) is extracted witType: GrantFiled: November 16, 2012Date of Patent: June 2, 2015Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Yasuhiro Ishikawa, Hiroaki Motegi, Yukiko Nagao
-
Publication number: 20140316077Abstract: The present invention provides a method for producing a polycarbonate-polyorganosiloxane copolymer economically and stably, in particular, the present invention is concerned with a method for continuous production of a polycarbonate-polyorganosiloxane copolymer including (A) a step of withdrawing a polymerization reaction solution obtained by polymerizing a dihydric phenol compound, a carbonate precursor, and a polyorganosiloxane in the presence of an alkaline compound aqueous solution and a water-insoluble organic solvent continuously or intermittently from a reactor; (B) a step of separating the polymerization reaction solution withdrawn in the step (A) into an aqueous phase and a water-insoluble organic solvent phase; and (C) a step of after washing the water-insoluble organic solvent phase separated in the step (B) with an acidic aqueous solution, separating the resultant into an aqueous phase and a water-insoluble organic solvent phase, wherein the content of the polycarbonate-polyorganosiloxane copolymeType: ApplicationFiled: November 16, 2012Publication date: October 23, 2014Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Yasuhiro Ishikawa, Hiroaki Motegi, Yukiko Nagao
-
Publication number: 20140296469Abstract: The present invention provides a method for producing a polycarbonate-polyorganosiloxane copolymer economically and stably, in particular, the present invention is concerned with a method for continuous production of a polycarbonate-polyorganosiloxane copolymer including (A) a step of withdrawing a polymerization reaction solution obtained by polymerizing a dihydric phenol compound, a carbonate precursor, and a polyorganosiloxane in the presence of an alkaline compound aqueous solution and a water-insoluble organic solvent continuously or intermittently from a reactor; (B) a step of separating the polymerization reaction solution withdrawn in the step (A) into an aqueous phase and a water-insoluble organic solvent phase; and (C) a step of after washing the water-insoluble organic solvent phase separated in the step (B) with an acidic aqueous solution, separating the resultant into an aqueous phase and a water-insoluble organic solvent phase, wherein the aqueous phase separated in the step (C) is extracted witType: ApplicationFiled: November 16, 2012Publication date: October 2, 2014Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Yasuhiro Ishikawa, Hiroaki Motegi, Yukiko Nagao
-
Publication number: 20140256888Abstract: Provided is a polycarbonate-polyorganosiloxane copolymer having high impact resistance and excellent transparency, in particular, a high total light transmittance and a small haze, and a method of producing thereof. Specifically, provided is a polycarbonate-polyorganosiloxane copolymer, containing a main chain having a repeating unit represented by the following general formula (I) and a constituent unit represented by the following general formula (II), in which: n in the general formula (II) is 25 to 50; and the copolymer satisfies the following conditions (a) and (b): (a) a molded article having a thickness of 2 mm made of the copolymer has a total light transmittance measured based on ISO 13468 of 88% or more and a haze measured based on ISO 14782 of 0.7% or less; and (b) a molded article having a thickness of 3 mm made of the copolymer has a total light transmittance measured based on ISO 13468 of 88% or more and a haze measured based on ISO 14782 of 1.0% or less.Type: ApplicationFiled: October 15, 2012Publication date: September 11, 2014Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Yasuhiro Ishikawa, Yukiko Nagao, Hiroaki Motegi
-
Patent number: 5990262Abstract: According to this invention, the prior art problem that relatively many steps and a long time are required for obtaining a high quality polycarbonate of a high molecular weight by a solid phase polymerization method has been solved by subjecting a polycarbonate oligomer to swollen solid phase polymerization under an atmosphere containing a swelling solvent gas or subjecting a polycarbonate oligomer to poor solvent solid phase polymerization under a stream of a poor solvent gas.Type: GrantFiled: September 15, 1997Date of Patent: November 23, 1999Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Akihiro Shishikura, Masahiro Takahashi, Seiji Takahashi, Noriyuki Kunishi, Hiroaki Motegi
-
Patent number: 5981051Abstract: Provided is a method for producing a granular polycarbonate prepolymer for solid-phase polymerization, comprising dissolving a polycarbonate prepolymer in a solvent under heat, then crystallizing it by cooling, and shaping it. The grains of the granular prepolymer hardly fuse together in polymerization, and the granular prepolymer is suitable for high-speed solid-phase polymerization to give polycarbonate.Type: GrantFiled: March 2, 1998Date of Patent: November 9, 1999Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Hiroaki Motegi, Noriyuki Kunishi, Akihiro Shishikura