Patents by Inventor Mitsugu Nakae

Mitsugu Nakae 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: 10513580
    Abstract: Provided is a polycarbonate resin composition, including, with respect to 100 parts by mass of an aromatic polycarbonate resin (A), 0.005 part by mass to 1 part by mass of a phosphorus-based compound (B) having an aryl group, and 0.005 part by mass to 5 parts by mass of a polyether compound (C) having a specific polyoxyalkylene structure, in which: an amount of a compound having a phenol structure produced by decomposition of the phosphorus-based compound (B) 1,500 hours after standing thereof under conditions of 40° C. and a humidity of 90% is 5 mass % or less with respect to the phosphorus-based compound (B); and when a weight of the phosphorus-based compound (B) is measured with a thermogravimetric-differential thermal analysis machine under a nitrogen atmosphere, a temperature at which the weight becomes smaller than the weight before the measurement by 2% is 340° C. or more.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: December 24, 2019
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Masami Takimoto, Takahiro Torii, Mitsugu Nakae
  • Patent number: 10221279
    Abstract: Provided is a polycarbonate resin molding material, including an aromatic polycarbonate resin (A), in which the polycarbonate resin molding material has: a content of o-hydroxyacetophenone measured by a predetermined method (1) of 1 ppm by mass or less; and a YI value measured by a predetermined method (2) of 1.21 or less.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: March 5, 2019
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Masami Takimoto, Takahiro Torii, Mitsugu Nakae
  • Publication number: 20170298176
    Abstract: Provided is a polycarbonate resin molding material, including an aromatic polycarbonate resin (A), in which the polycarbonate resin molding material has: a content of o-hydroxyacetophenone measured by a predetermined method (1) of 1 ppm by mass or less; and a YI value measured by a predetermined method (2) of 1.21 or less.
    Type: Application
    Filed: July 6, 2017
    Publication date: October 19, 2017
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Masami TAKIMOTO, Takahiro TORll, Mitsugu NAKAE
  • Patent number: 9783674
    Abstract: Provided is a polycarbonate resin composition, including, with respect to 100 parts by mass of an aromatic polycarbonate resin (A), 0.005 part by mass to 1 part by mass of a phosphorus-based compound (B) having an aryl group, and 0.005 part by mass to 5 parts by mass of a polyether compound (C) having a polyoxyalkylene structure, in which the phosphorus-based compound (B) includes such a compound that an amount of a compound having a phenol structure produced by decomposition of the compound 1,500 hours after standing thereof under conditions of 40° C. and a humidity of 90% is 5 mass % or less with respect to the phosphorus-based compound (B).
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: October 10, 2017
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Masami Takimoto, Mitsugu Nakae
  • Publication number: 20170275422
    Abstract: Provided is a polycarbonate resin composition, including, with respect to 100 parts by mass of an aromatic polycarbonate resin (A), 0.005 part by mass to 1 part by mass of a phosphorus-based compound (B) having an aryl group, and 0.005 part by mass to 5 parts by mass of a polyether compound (C) having a specific polyoxyalkylene structure, in which: an amount of a compound having a phenol structure produced by decomposition of the phosphorus-based compound (B) 1,500 hours after standing thereof under conditions of 40° C. and a humidity of 90% is 5 mass % or less with respect to the phosphorus-based compound (B); and when a weight of the phosphorus-based compound (B) is measured with a thermogravimetric-differential thermal analysis machine under a nitrogen atmosphere, a temperature at which the weight becomes smaller than the weight before the measurement by 2% is 340° C. or more.
    Type: Application
    Filed: October 15, 2015
    Publication date: September 28, 2017
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Masami TAKIMOTO, Takahiro TORII, Mitsugu NAKAE
  • Patent number: 9732185
    Abstract: Provided is a polycarbonate resin molding material, including an aromatic polycarbonate resin (A), in which the polycarbonate resin molding material has: a content of o-hydroxyacetophenone measured by a predetermined method (1) of 1 ppm by mass or less; and a YI value measured by a predetermined method (2) of 1.21 or less.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: August 15, 2017
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Masami Takimoto, Takahiro Torii, Mitsugu Nakae
  • Patent number: 9670316
    Abstract: Provided is an aromatic polycarbonate resin molded body, which is obtained by molding a resin molding material containing an aromatic polycarbonate resin (A), in which: the molded body has a thin-walled portion having a thickness of 0.5 mm or less; the molded body has an o-hydroxyacetophenone content of 1 ppm by mass or less and a nitrogen atom content of 15 ppm or less; and the molded body is free of an absorption maximum in a wavelength range of from 500 nm to 600 nm.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: June 6, 2017
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Masami Takimoto, Takahiro Torii, Mitsugu Nakae
  • Publication number: 20160297924
    Abstract: Provided is a polycarbonate resin molding material, including an aromatic polycarbonate resin (A), in which the polycarbonate resin molding material has: a content of o-hydroxyacetophenone measured by a predetermined method (1) of 1 ppm by mass or less; and a YI value measured by a predetermined method (2) of 1.21 or less.
    Type: Application
    Filed: November 10, 2014
    Publication date: October 13, 2016
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Masami TAKIMOTO, Takahiro TORII, Mitsugu NAKAE
  • Publication number: 20160280909
    Abstract: Provided is a polycarbonate resin composition, including, with respect to 100 parts by mass of an aromatic polycarbonate resin (A), 0.005 part by mass to 1 part by mass of a phosphorus-based compound (B) having an aryl group, and 0.005 part by mass to 5 parts by mass of a polyether compound (C) having a polyoxyalkylene structure, in which the phosphorus-based compound (B) includes such a compound that an amount of a compound having a phenol structure produced by decomposition of the compound 1,500 hours after standing thereof under conditions of 40° C. and a humidity of 90% is 5 mass % or less with respect to the phosphorus-based compound (B).
    Type: Application
    Filed: November 10, 2014
    Publication date: September 29, 2016
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Masami TAKIMOTO, Mitsugu NAKAE
  • Publication number: 20160272758
    Abstract: Provided is an aromatic polycarbonate resin molded body, which is obtained by molding a resin molding material containing an aromatic polycarbonate resin (A), in which: the molded body has a thin-walled portion having a thickness of 0.5 mm or less; the molded body has an o-hydroxyacetophenone content of 1 ppm by mass or less and a nitrogen atom content of 15 ppm or less; and the molded body is free of an absorption maximum in a wavelength range of from 500 nm to 600 nm.
    Type: Application
    Filed: November 10, 2014
    Publication date: September 22, 2016
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Masami TAKIMOTO, Takahiro TORII, Mitsugu NAKAE
  • Patent number: 7922803
    Abstract: A transparent cured film including organic fine particles having an ultraviolet absorbing group and an average particle diameter of 1 to 200 nm, the particles being dispersed in a matrix having an Si—O bond, and having a transmittance of visible light of 80% or more and a haze value of 10% or less. The coating composition can be produced, for example, from a coating composition containing (1) an alkoxysilane compound or polyalkoxysilane compound; (2) an aminosilane compound; (3) an epoxysilane compound; (4) a polymer ultraviolet absorber; (5) a curing catalyst; and (6) a solvent.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: April 12, 2011
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Kazuhiko Ito, Mitsugu Nakae
  • Patent number: 7905950
    Abstract: A transparent cured film including organic fine particles having an ultraviolet absorbing group and an average particle diameter of 1 to 200 nm, the particles being dispersed in a matrix having an Si—O bond, and having a transmittance of visible light of 80% or more and a haze value of 10% or less. The coating composition can be produced, for example, from a coating composition containing (1) an alkoxysilane compound or polyalkoxysilane compound; (2) an aminosilane compound; (3) an epoxysilane compound; (4) a polymer ultraviolet absorber; (5) a curing catalyst; and (6) a solvent.
    Type: Grant
    Filed: August 25, 2005
    Date of Patent: March 15, 2011
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Kazuhiko Ito, Mitsugu Nakae
  • Publication number: 20090233076
    Abstract: A transparent cured film including organic fine particles having an ultraviolet absorbing group and an average particle diameter of 1 to 200 nm, the particles being dispersed in a matrix having an Si—O bond, and having a transmittance of visible light of 80% or more and a haze value of 10% or less. The coating composition can be produced, for example, from a coating composition containing (1) an alkoxysilane compound or polyalkoxysilane compound; (2) an aminosilane compound; (3) an epoxysilane compound; (4) a polymer ultraviolet absorber; (5) a curing catalyst; and (6) a solvent.
    Type: Application
    Filed: May 22, 2009
    Publication date: September 17, 2009
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Kazuhiko ITO, Mitsugu NAKAE
  • Publication number: 20090011256
    Abstract: A cured film including: organic ultraviolet-absorbing particles having an average particle diameter of 1 to 200 nm; and inorganic ultraviolet-absorbing particles and/or colloidal silica having an average particle diameter of 1 to 200 nm; the particles being dispersed in a matrix having an Si—O bond.
    Type: Application
    Filed: February 16, 2007
    Publication date: January 8, 2009
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Kazuhiko Ito, Mitsugu Nakae, Masahiro Sekiguchi
  • Patent number: 5942594
    Abstract: A polycarbonate exhibiting excellent fluidity and moisture resistance and a process for efficiently producing the polycarbonate are provided.The polycarbonate has a main chain comprising a repeating unit represented by general formula (I): ##STR1## wherein R.sup.1 and R.sup.2 each represents hydrogen atom or an alkyl group having 1 to 7 carbon atoms; contains 100 ppm by weight or less of a unit of a phenyl salicylate structure expressed by formula (II): ##STR2## in the main chain; and has a viscosity-average molecular weight of 10,000 or more. The polycarbonate is produced in accordance with a process comprising transesterification in the presence of a catalyst comprising a combination of an organic basic compound containing nitrogen and a quaternary phosphonium salt.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: August 24, 1999
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Mitsugu Nakae, Yasuhiro Ishikawa, Sadayuki Sato
  • Patent number: 5470939
    Abstract: A polycarbonate copolymer having a desirable heat resistance and impact resistance, which comprises a carbonate structural unit of the formula (I): ##STR1## wherein A is alkylidene, alkylene, arylene, arylalkylene, --O--, --S--, --SO.sub.2 -- or a single bond, and a carbonate structural unit of formula (II): ##STR2## wherein X.sup.1 and Y.sup.1 are hydrogen, halogen or an organic group and m and n are 1 to 4, wherein the proportion of the carbonate structural unit of the formula (II) being 2 to 15 mole % based on the amount of the carbonate structural unit of the formulas (I) and (II), and the viscosity average molecular weight of the copolymer being 15,000 to 40,000.
    Type: Grant
    Filed: October 13, 1994
    Date of Patent: November 28, 1995
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventor: Mitsugu Nakae
  • Patent number: 5391693
    Abstract: A polycarbonate copolymer having a desirable heat resistance and impact resistance, and a process for producing the copolymer. The polycarbonate copolymer comprises a carbonate structural unit of the formula (I): ##STR1## wherein A is alkylidene, alkylene, arylene, arylalkylene, --O--, --S--, --SO.sub.2 -- or a single bond, and a carbonate structural unit of formula (II): ##STR2## wherein X.sup.1 and Y.sup.1 are hydrogen, halogen or an organic group and m and n are 1 to 4, wherein the proportion of the carbonate structural unit of the formula (II) being 2 to 15 mole % based on the amount of the carbonate structural unit of the formulas (I) and (II), and the viscosity average molecular weight of the copolymer being 15,000 to 40,000.
    Type: Grant
    Filed: October 1, 1993
    Date of Patent: February 21, 1995
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventor: Mitsugu Nakae