Patents by Inventor Hideyuki Umetsu

Hideyuki Umetsu 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).

  • Publication number: 20130296524
    Abstract: The present invention provides an apparatus for producing an aromatic polyester, comprising a reactor, a rectifying column, a distillation pipe for feeding distillate gas from the reactor to the rectifying column, and a liquid returning pipe for returning reflux liquid from the rectifying column to a reactor, wherein the ratio of (b) the inside diameter of pipe of the liquid returning pipe to (a) the maximum inside diameter of drum of the reactor, (b)/(a), is 0.012 to 0.12. The production apparatus has an efficient rectifying effect and is suitable for producing an aromatic polyester having an excellent heat resistance and color tone efficiently with good polymerizability and at low cost.
    Type: Application
    Filed: December 19, 2011
    Publication date: November 7, 2013
    Applicant: TORAY INDUSTRIES INC
    Inventors: Michiyoshi Matsumoto, Kunihiko Miyauchi, Hideyuki Umetsu
  • Publication number: 20130296523
    Abstract: The present invention provides a process for producing a liquid crystalline polyester resin, wherein an acetylation reaction and an oligomerization reaction of raw materials are carried out in an acetylation reaction vessel, and then a deacetylation polycondensation of a liquid after the oligomerization reaction is carried out in a polycondensation reaction vessel, wherein the acetylation reaction vessel used is a vessel having an inner wall surface composed of an alloy containing 50% by mass or more of Ni and 10% by mass or more of Mo; and the inner wall surface of the acetylation reaction vessel is divided into three or more band-like zones arrayed in the height direction of the vessel, and the oligomerization reaction is carried out while maintaining the temperatures of each band-like zone in a particular relationship.
    Type: Application
    Filed: December 19, 2011
    Publication date: November 7, 2013
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Kunihiko Miyauchi, Michiyoshi Matsumoto, Hideyuki Umetsu
  • Publication number: 20130270481
    Abstract: A liquid crystalline polyester having structural units (I), (II), (III), (IV) and (V), wherein a ratio of the structural unit (I) to sum of the structural units (I), (II) and (III) is 68 to 80 mol %, a ratio of the structural unit (II) to sum of the structural units (II) and (III) is 55 to 75 mol %, and a ratio of the structural unit (IV) to sum of the structural units (IV) and (V) is 60 to 85 mol %, wherein a total amount of the structural units (II) and (III) is substantially equimolar with a total amount of the structural units (IV) and (V), and ?S (entropy of melting) defined by Equation [1] given below is 1.0 to 3.
    Type: Application
    Filed: December 14, 2011
    Publication date: October 17, 2013
    Applicant: Toray Industries, Inc.
    Inventors: Kohei Miyamoto, Mitsushige Hamaguchi, Hideyuki Umetsu
  • Patent number: 8440780
    Abstract: A wholly aromatic liquid crystalline polyester contains 2.0 to 15.0 mole percent of a hydroquinone-derived structural unit relative to a total amount of structural units. The wholly aromatic liquid crystalline polyester has sum of an amount (a) of terminal hydroxyl group and an amount (b) of terminal acetyl group in a range of 50 to 350 equivalents/(g·10?6), and has a ratio [(a)+(b)]/(c) of the sum of the amount (a) of terminal hydroxyl group and the amount (b) of terminal acetyl group to an amount (c) of terminal carboxyl group in a range of 1.05 to 2.00.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: May 14, 2013
    Assignee: Toray Industries, Inc.
    Inventors: Mitsushige Hamaguchi, Kohei Miyamoto, Hideyuki Umetsu
  • Publication number: 20130022828
    Abstract: A liquid crystalline polyester composition containing at least 100 parts by weight of liquid crystalline polyester (A) and 10 to 100 parts by weight of talc (B). The talc (B) has a ratio (a1/a2) of oil absorption (a1) ml/100 g to specific surface area (a2) m2/g in a range of 14.0 to 26.0 (ml·g)/(100 g·m2) and has a number-average particle diameter of 10 to 30 ?m.
    Type: Application
    Filed: December 14, 2011
    Publication date: January 24, 2013
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Satoshi Matsubara, Hideyuki Umetsu, Takayuki Hase
  • Publication number: 20130015400
    Abstract: A liquid crystalline polyester composition contains at least 100 parts by weight of liquid crystalline polyester having different structural units and 10 to 100 parts by weight of glass fiber, wherein the glass fiber has a weight-average fiber length (Mw) of 200 to 500 ?m, and content of specific glass fiber having fiber length of not less than 1500 ?m is 0.1 to 5.0 percent by weight to a total amount of the glass fiber.
    Type: Application
    Filed: December 14, 2011
    Publication date: January 17, 2013
    Applicant: Toray Industries, Inc.
    Inventors: Satoshi Matsubara, Hideyuki Umetsu, Takayuki Hase
  • Publication number: 20130015401
    Abstract: A liquid crystalline polyester composition contains at least 100 parts by weight of liquid crystalline polyester and 10 to 100 parts by weight of glass fiber, wherein the glass fiber has a weight-average fiber length of 30 to 100 ?m, and content of specific glass fiber having fiber length of 300 to 500 ?m is 0.1 to 5 percent by weight to a total amount of the glass fiber.
    Type: Application
    Filed: December 14, 2011
    Publication date: January 17, 2013
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Satoshi Matsubara, Hideyuki Umetsu, Takayuki Hase
  • Publication number: 20130012680
    Abstract: A wholly aromatic liquid crystalline polyester contains 2.0 to 15.0 mole percent of a hydroquinone-derived structural unit relative to a total amount of structural units. The wholly aromatic liquid crystalline polyester has sum of an amount (a) of terminal hydroxyl group and an amount (b) of terminal acetyl group in a range of 50 to 350 equivalents/(g·10?6), and has a ratio [(a)+(b)]/(c) of the sum of the amount (a) of terminal hydroxyl group and the amount (b) of terminal acetyl group to an amount (c) of terminal carboxyl group in a range of 1.05 to 2.00.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 10, 2013
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Mitsushige Hamaguchi, Kohei Miyamoto, Hideyuki Umetsu
  • Publication number: 20120119142
    Abstract: A liquid crystalline polyester has a specifically high fluidity, a low anisotropy, a high toughness, a low gas property, an excellent heat resistance and a high dielectric breakdown resistance. The liquid crystalline polyester includes 38 to 74 mol % of structural unit(s) obtained from a hydroxycarboxylic acid, 31 to 13 mol % of a structural unit obtained from 4,4?-dihydroxybiphenyl and 31 to 13 mol % of a structural unit obtained from 2,6-naphthalenedicarboxylic acid (100 mol % in total), characterized in that the hydroxycarboxylic acid structural units include a structural unit obtained from 2-hydroxy-6-naphthoic acid in an amount of 89 mol % or more and the average sequence length of the structural unit obtained from 2-hydroxy-6-naphthoic acid is 0.1 to 1.
    Type: Application
    Filed: August 11, 2009
    Publication date: May 17, 2012
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Keiko Osato, Koji Tachikawa, Hideyuki Umetsu
  • Patent number: 7514144
    Abstract: Tablets of thermoplastic resin and filler, in which the compositional ratio of the two is so controlled that the thermoplastic resin accounts for from 1 to 40% by volume and the filler for from 60 to 99% by volume based on the sum of the two, 100% by volume, are obtained by compression-molding thermoplastic resin powder and filler into the tablets, or melt-kneading thermoplastic resin and filler followed by compression-molding the powder of the resulting composition into the tablets. The filler content thereof is high, heretofore unknown in the art, and the tablets efficiently exhibit the properties of the filler therein.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: April 7, 2009
    Assignee: Toray Industries, Inc.
    Inventors: Hideyuki Umetsu, Fumie Shinoda, Yoshiki Makabe
  • Publication number: 20050098916
    Abstract: Tablets of thermoplastic resin and filler, in which the compositional ratio of the two is so controlled that the thermoplastic resin accounts for from 1 to 40% by volume and the filler for from 60 to 99% by volume based on the sum of the two, 100% by volume, are obtained by compression-molding thermoplastic resin powder and filler into the tablets, or melt-kneading thermoplastic resin and filler followed by compression-molding the powder of the resulting composition into the tablets. The filler content thereof is high, heretofore unknown in the art, and the tablets efficiently exhibit the properties of the filler therein.
    Type: Application
    Filed: May 21, 2002
    Publication date: May 12, 2005
    Inventors: Hideyuki Umetsu, Fumie Shinoda, Yoshiki Makabe
  • Patent number: 6375863
    Abstract: A thermoplastic resin composition which comprises 100 parts by weight of thermoplastic resin as component (A) which is at least one species selected styrene resin, polycarbonate resin, and polyphenylene ether resin, and 0.5-100 parts by weigh of liquid crystalline polymer as component (B), said thermoplastic resin as component (A) having a glass transition point the rate of change of which satisfies the equation (1) below. Rate of change (%)=|(TgA−TgT)/TgA|×100≦5  (1) where TgA is the glass transition point of the thermoplastic resin as component (A), and TgT is the glass transition point attributable to the thermoplastic resin as component (A) in the resin composition.
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: April 23, 2002
    Assignee: Toray Industries, Inc.
    Inventors: Kouji Tachikawa, Hideyuki Umetsu, Yoshiki Makabe
  • Patent number: 6075114
    Abstract: A liquid-crystalline resin composition comprising 100 parts by weight of a semi-aromatic liquid-crystalline polyester and/or a semi-aromatic liquid-crystalline polyester-amide, from 0.001 to 5 parts by weight of at least one or more compounds selected from phosphorous acid, hypophosphorous acid and their salts, and from 0.01 to 10 parts by weight of red phosphorus has good flame retardancy, low anisotropy, good heat resistance and good hydrolysis resistance, and is useful as engineering plastic.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: June 13, 2000
    Assignee: Toray Industries, Inc.
    Inventors: Hideyuki Umetsu, Yoshiki Makabe, Toshihide Inoue
  • Patent number: 6046300
    Abstract: A liquid-crystalline resin with ester bonds, which has a hydroxyl terminal concentration of not smaller than 15.times.10.sup.-6 equivalents/g, and a thermoplastic resin composition comprising the liquid-crystalline resin.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: April 4, 2000
    Assignee: Toray Industries, Inc.
    Inventors: Hideyuki Umetsu, Yoshiki Makabe, Masahiro Sugimura
  • Patent number: 5980777
    Abstract: A liquid crystalline resin which comprises at least one kind of liquid crystalline polymer selected from liquid crystalline polyester and liquid crystalline polyester amide, both forming an anisotropic molten phase, and an inorganic phosphorus compound, said liquid crystalline resin having an absorbance of 0.5 or less at 380 nm when measured over an optical path length of 10 mm in a 0.5 wt % solution in a 1:1 mixed solvent of pentafluorophenol and chloroform (by weight). It is useful as engineering plastics because of improved color, heat resistance, and hydrolytic resistance.
    Type: Grant
    Filed: December 24, 1997
    Date of Patent: November 9, 1999
    Assignee: Toray Industries, Inc.
    Inventors: Hideyuki Umetsu, Yoshiki Makabe, Toshihide Inoue
  • Patent number: 5804634
    Abstract: Disclosed herein is a liquid crystalline resin compound which includes about 100 pbw of liquid crystalline resin and about 5-200 pbw of inorganic filler, the liquid crystalline resin being composed of about 99.5-50 wt % of partially aromatic liquid crystalline polyester resin and about 0.5-50 wt % of wholly aromatic liquid crystalline polyester resin, and the inorganic filler having an average aspect ratio in the range of 3 to 25. Also disclosed is a molded article of liquid crystalline resin obtained by molding from the liquid crystalline resin compound. The resin compound is superior in flowability and the molded article has good mechanical properties, especially balanced rigidity and toughness.
    Type: Grant
    Filed: December 10, 1996
    Date of Patent: September 8, 1998
    Assignee: Toray Industries, Inc.
    Inventors: Hideyuki Umetsu, Kiyokazu Nakamura, Toshihide Inoue, Miki Sakai, Toshio Kurematsu
  • Patent number: 5258439
    Abstract: A flame retardant nylon polymer moulding composition comprises a 6T/66 copolyamide or 6T/6 copolyamide and a specific flame-retardant and auxiliary flame-retardant. The composition can be made into molded items for electric and electronic parts, automotive parts, and housing owing to their high degree of flame retardancy, good external appearance, and good heat resistance.
    Type: Grant
    Filed: February 8, 1991
    Date of Patent: November 2, 1993
    Assignee: Toray Industries, Inc.
    Inventors: Osamu Togashi, Hideyuki Umetsu, Masatoshi Iwamoto