Patents by Inventor Hiroki Ebata

Hiroki Ebata 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: 10696816
    Abstract: The present invention addresses the problem of providing a polyester resin composition for reflective materials which gives a reflective material having a high reflectance. The polyester resin composition for reflective materials comprises: a polyester resin (A) comprising an alicyclic dicarboxylic acid ingredient unit (a1) and an aliphatic diol ingredient unit (b1); and a white pigment (B). The amount of the alicyclic dicarboxylic acid ingredient unit (a1) is 50 mol % or more of the amount of all the dicarboxylic acid ingredient units (a) in the polyester resin (A), and the amount of the aliphatic diol ingredient unit (b1) is 50 mol % or more of the amount of all the diol ingredient units (b) in the polyester resin (A). The alicyclic dicarboxylic acid ingredient unit (a1) comprises the cis and trans forms of cis-trans isomers, the proportion of the cis form determined by NMR being 20 mol % or higher.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: June 30, 2020
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Kaoru Ohshimizu, Hideto Ogasawara, Hiroki Ebata, Takashi Hama, Fumio Kageyama, Shintaro Mitsunaga, Nobuhiro Takizawa, Akinori Amano
  • Patent number: 10253182
    Abstract: The problem of the invention is to provide a semi-aromatic polyamide resin composition having high rigidity, exceptional impact resistance, and exceptional zygosity with very little change in hardness associated with heating and cooling, as well as a molded article of this semi-aromatic polyamide resin composition. A semi-aromatic polyamide resin composition containing a semi-aromatic polyamide resin (A), acid-modified polyolefin resin (B), and fibrous filler (C), wherein the resin (A) contains a certain amount or more of terephthalic acid component units relative to the total number of moles of dicarboxylic acid component units, the semi-aromatic polyamide resin composition contains a certain amount or more of the resin (B), the glass transition temperature of the semi-aromatic polyamide resin composition is within a predetermined range, and the Vicat softening point of the resin (B) is within a predetermined range, is used as the semi-aromatic polyamide resin composition in order to solve this problem.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: April 9, 2019
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Kaoru Minagawa, Hiroki Ebata, Isao Washio, Kouichi Sano, Nobuhiro Takizawa, Akinori Amano
  • Publication number: 20180201864
    Abstract: The present invention addresses the problem of providing a lubricating oil composition having excellent heat resistance (suppression of discoloration in heating) and tackiness while maintaining excellent viscosity properties of a lubricating oil composition using a ricinolic acid polymer. The present invention provides a copolymer (B) containing structural units (a) derived from ricinolic acid, structural units (b) derived from an aliphatic dicarboxylic acid and structural units (c) derived from a diol having 2 to 10 carbon atoms in a specific ratio and having a specific intrinsic viscosity, and provides a lubricating oil composition containing a base oil and the copolymer (B) and having a mass ratio (mass of (A) /mass of (B)) of the base oil (A) to the copolymer (B) of 60/40 to 99.5/0.5.
    Type: Application
    Filed: August 29, 2016
    Publication date: July 19, 2018
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Mariko KIDA, Hiroki EBATA, Ryousuke KANESHIGE
  • Patent number: 10011715
    Abstract: The purpose of the present invention is to provide a polyester resin with improved mechanical properties, molding performance, and, preferably, fire retardancy. This polyester resin composition contains the following: a polyester resin (A) that has a melting point or glass transition temperature of at least 250° C.; a thermoplastic resin (B) that has an olefin-derived constitutional unit and an aromatic hydrocarbon structure and has an intrinsic viscosity ([?]), as measured in decalin at 135° C., of 0.04 to 1.0 dl/g; and a copolymer (C) that has an olefin-derived constitutional unit, an ?,?-unsaturated-carboxylic-ester-derived constitutional unit, and a cyclic oxy-hydrocarbon structure.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: July 3, 2018
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Isao Washio, Hideto Ogasawara, Hiroki Ebata, Fumio Kageyama, Nobuhiro Takizawa, Akinori Amano
  • Patent number: 9963568
    Abstract: [Object] To provide an excellent foaming agent which does not have problems in handling and operation (example: risk of explosion or fire) and inhibition of cross-linking resulting from a foaming agent and problems, such as, mold pollution and environmental pollution, caused by a foaming agent residue, which has excellent uniform dispersibility in a subject of foaming, and which can be used as an alternative to the chemical decomposition type foaming agent. [Solution] A foaming agent formed from at least (A) a high molecular weight compound having a saturated water absorption of 10 to 1,000 g/g in ion-exchanged water (25° C.) and (B) water, wherein a storage modulus (G?) of the agent, determined on the basis of a viscoelasticity measurement at a temperature of 20° C., is 8.0×101 to 1.0×106 Pa at a frequency of 5 rad/s.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: May 8, 2018
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Ryo Nakatsuji, Hiroki Ebata, Yuji Ishii, Kiyohide Inomata
  • Patent number: 9932444
    Abstract: To provide: a semiaromatic polyamide which has excellent moldability, heat resistance, chemical resistance and mechanical characteristics; and a molded article of this semiaromatic polyamide. A semiaromatic polyamide (I) of the present invention contains 35-50% by mole of a structural unit derived from terephthalic acid [A], 25-40% by mole of a structural unit derived from isophthalic acid [B], 15-35% by mole of a structural unit derived from an aliphatic dicarboxylic acid [C] (provided that the total of [A], [B] and [C] is 100% by mole), and a structural unit derived from an aliphatic diamine [D] having 4-12 carbon atoms. The molar ratio ([A]/[B]) is from 65/35 to 50/50, and the molar ratio ([C]/[B]) is from 30/70 to 50/50. The melting enthalpy ([increment]H) of the semiaromatic polyamide (I) as determined by differential scanning calorimetry (DSC) is 20-40 mJ/mg, and the intrinsic viscosity of the semiaromatic polyamide (I) is 0.7-1.6 dl/g.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: April 3, 2018
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Isao Washio, Hiroki Ebata, Fumio Kageyama, Toshitaka Kosaka, Hideto Ogasawara, Akinori Amano, Nobuhiro Takizawa
  • Publication number: 20170298203
    Abstract: [Object] To provide an excellent foaming agent which does not have problems in handling and operation (example: risk of explosion or fire) and inhibition of cross-linking resulting from a foaming agent and problems, such as, mold pollution and environmental pollution, caused by a foaming agent residue, which has excellent uniform dispersibility in a subject of foaming, and which can be used as an alternative to the chemical decomposition type foaming agent. [Solution] A foaming agent formed from at least (A) a high molecular weight compound having a saturated water absorption of 10 to 1,000 g/g in ion-exchanged water (25° C.) and (B) water, wherein a storage modulus (G?) of the agent, determined on the basis of a viscoelasticity measurement at a temperature of 20° C., is 8.0×101 to 1.0×106 Pa at a frequency of 5 rad/s.
    Type: Application
    Filed: June 30, 2017
    Publication date: October 19, 2017
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Ryo NAKATSUJI, Hiroki EBATA, Yuji ISHII, Kiyohide INOMATA
  • Publication number: 20170283556
    Abstract: The present invention relates to a polyamide-based thermoplastic elastomer composition [Y] in which a rubber composition [X] and a phenol resin-based crosslinking agent [IV] are dynamically crosslinked, the rubber composition [X] comprising a polyamide [I] including 30 to 100% by mole of a terephthalic acid structural unit and having a melting point of 220 to 290° C.; an ethylene-?-olefin-unconjugated polyene copolymer rubber [II] including structural units of ethylene, an ?-olefin having 3 to 20 carbon atoms and an unconjugated polyene, respectively; and an olefin-based polymer [III] including 0.3 to 5.0% by mass of a functional group structural unit, (the total of [I] to [IV]: 100% by mass).
    Type: Application
    Filed: December 5, 2014
    Publication date: October 5, 2017
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Hiroki EBATA, Tatsuya ENOMOTO, Isao WASHIO, Fumio KAGEYAMA, Atsushi TAKEISHI, Yuji ISHII, Akinori AMANO
  • Patent number: 9732223
    Abstract: The present invention provides a semi-aromatic polyamide resin composition having exceptional impact resistance, fuel barrier properties, and injection moldability, as well as a molded article containing the same, through a semi-aromatic polyamide resin composition containing specific proportions of (A) a semi-aromatic polyamide comprising a dicarboxylic acid component comprising terephthalic acid and adipic acid and a diamine component having a linear aliphatic diamine having 4-10 carbon atoms, (B) a semi-aromatic polyamide comprising a dicarboxylic acid component having isophthalic acid and a diamine component having an aliphatic diamine having 4-15 carbon atoms, (C) an olefin polymer containing a specific amount of functional group structural units, and (D) a fibrous filler.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: August 15, 2017
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Isao Washio, Hiroki Ebata, Hideto Ogasawara, Nobuhiro Takizawa, Fumio Kageyama, Akinori Amano
  • Publication number: 20170210879
    Abstract: The purpose of the present invention is to provide a polyester resin composition for a reflection plate having high reflectance and small decrease of reflectance under exposure to heat during production of an LED package or reflow soldering step for mounting, or exposure to heat and light from a light source. A polyester resin composition of the present invention contains: 30-80% by mass of (A) a polyester resin having a melting point or glass transition temperature of 250° C. or more as measured by DSC; 5-30% by mass of (B) a fibrous reinforcing material having an average fiber length (l) of 2-300 ?m, an average fiber diameter (d) of 0.05-18 ?m and an aspect ratio (l/d) of 2-20, said aspect ratio being a quotient of 1 by d; and 5-50% by mass of (C) a white pigment (with the total of (A), (B) and (C) being 100% by mass).
    Type: Application
    Filed: June 29, 2015
    Publication date: July 27, 2017
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Kaoru OHSHIMIZU, Hideto OGASAWARA, Hiroki EBATA, Takashi HAMA
  • Publication number: 20170210883
    Abstract: The purpose of the present invention is to provide a resin composition for obtaining a reflective panel that has high reflectivity, and that experiences minimal decline in reflectivity even when exposed to heat in the course of an LED package manufacturing process, a reflow soldering process during mounting of an LED package, or the like, or to heat and light from a light source in the service environment. This resin composition for a reflective panel includes 45-80 mass % of a thermoplastic resin (A) comprising at least one of a polyester resin (A1) and a polyamide resin (A2), that have a melting point (Tm) or glass transition temperature (Tg) of at least 250° C., as measured by a differential scanning calorimeter (DSC), 17-54.99% of a white pigment (B), and 0.01-3 mass % of at least one compound (C) represented by general formula (1) (wherein (A), (B), and (C) total 100 mass %).
    Type: Application
    Filed: June 29, 2015
    Publication date: July 27, 2017
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Kaoru OHSHIMIZU, Hideto OGASAWARA, Hiroki EBATA, Takashi HAMA
  • Publication number: 20170174863
    Abstract: The present invention addresses the problem of providing a polyester resin composition for reflective materials which gives a reflective material having a high reflectance. The polyester resin composition for reflective materials comprises: a polyester resin (A) comprising an alicyclic dicarboxylic acid ingredient unit (a1) and an aliphatic diol ingredient unit (b1); and a white pigment (B). The amount of the alicyclic dicarboxylic acid ingredient unit (a1) is 50 mol % or more of the amount of all the dicarboxylic acid ingredient units (a) in the polyester resin (A), and the amount of the aliphatic diol ingredient unit (b1) is 50 mol % or more of the amount of all the diol ingredient units (b) in the polyester resin (A). The alicyclic dicarboxylic acid ingredient unit (a1) comprises the cis and trans forms of cis-trans isomers, the proportion of the cis form determined by NMR being 20 mol % or higher.
    Type: Application
    Filed: March 26, 2015
    Publication date: June 22, 2017
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Kaoru OHSHIMIZU, Hideto OGASAWARA, Hiroki EBATA, Takashi HAMA, Fumio KAGEYAMA, Shintaro MITSUNAGA, Nobuhiro TAKIZAWA, Akinori AMANO
  • Publication number: 20160312027
    Abstract: The problem of the invention is to provide a semi-aromatic polyamide resin composition having high rigidity, exceptional impact resistance, and exceptional zygosity with very little change in hardness associated with heating and cooling, as well as a molded article of this semi-aromatic polyamide resin composition. A semi-aromatic polyamide resin composition containing a semi-aromatic polyamide resin (A), acid-modified polyolefin resin (B), and fibrous filler (C), wherein the resin (A) contains a certain amount or more of terephthalic acid component units relative to the total number of moles of dicarboxylic acid component units, the semi-aromatic polyamide resin composition contains a certain amount or more of the resin (B), the glass transition temperature of the semi-aromatic polyamide resin composition is within a predetermined range, and the Vicat softening point of the resin (B) is within a predetermined range, is used as the semi-aromatic polyamide resin composition in order to solve this problem.
    Type: Application
    Filed: December 19, 2014
    Publication date: October 27, 2016
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Kaoru MINAGAWA, Hiroki EBATA, Isao WASHIO, Kouichi SANO, Nobuhiro TAKIZAWA, Akinori AMANO
  • Publication number: 20160168381
    Abstract: The present invention provides a semi-aromatic polyamide resin composition having exceptional impact resistance, fuel barrier properties, and injection moldability, as well as a molded article containing the same, through a semi-aromatic polyamide resin composition containing specific proportions of (A) a semi-aromatic polyamide comprising a dicarboxylic acid component comprising terephthalic acid and adipic acid and a diamine component having a linear aliphatic diamine having 4-10 carbon atoms, (B) a semi-aromatic polyamide comprising a dicarboxylic acid component having isophthalic acid and a diamine component having an aliphatic diamine having 4-15 carbon atoms, (C) an olefin polymer containing a specific amount of functional group structural units, and (D) a fibrous filler.
    Type: Application
    Filed: July 25, 2014
    Publication date: June 16, 2016
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Isao WASHIO, Hiroki EBATA, Hideto OGASAWARA, Nobuhiro TAKIZAWA, Fumio KAGEYAMA, Akinori AMANO
  • Publication number: 20160090482
    Abstract: The present invention is directed to a polyester resin composition for providing a reflector having excellent mechanical strength and heat resistance, maintaining high reflectance even in a heated environment such as an LED manufacturing process or a reflow soldering process, and having small change in shrinkage rate. The polyester resin composition for a reflective material is a composition comprising 30 to 80% by mass of a polyester resin (A) with a melting point or a glass transition temperature of 250° C. or more, 10 to 35% by mass of a glass fiber (B) with a minor axis of 3 to 8 ?m, 5 to 50% by mass of a white pigment (C), and 0.3 to 1.5% by mass of an olefin polymer (D) containing 0.2 to 1.8% of a functional group structural unit (all based on a total of (A), (B), (C) and (D) which is 100% by mass).
    Type: Application
    Filed: May 9, 2014
    Publication date: March 31, 2016
    Applicant: MITSUI CHEMICALS., INC.
    Inventors: Hiroki EBATA, Hideto OGASAWARA, Isao WASHIO, Fumio KAGEYAMA, Nobuhiro TAKIZAWA, Akinori AMANO, Takashi HAMA
  • Patent number: 9193856
    Abstract: The present invention provides a rubber composition having adequate foamability, uses thereof, a copolymer contained in the rubber composition, a rubber composition capable of providing a cross-linked foam, which has a low specific gravity and an excellent shape-retaining property even when the usage of a nonconjugated polyene is reduced, and a cross-linked rubber and a cross-linked foam, which are produced from the rubber composition.
    Type: Grant
    Filed: November 26, 2009
    Date of Patent: November 24, 2015
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Hiroki Ebata, Akinori Takehara, Mitsunao Arino, Masao Kunizane, Yoshiharu Kikuchi, Takayuki Kajihara
  • Publication number: 20150329670
    Abstract: To provide: a semiaromatic polyamide which has excellent moldability, heat resistance, chemical resistance and mechanical characteristics; and a molded article of this semiaromatic polyamide. A semiaromatic polyamide (I) of the present invention contains 35-50% by mole of a structural unit derived from terephthalic acid [A], 25-40% by mole of a structural unit derived from isophthalic acid [B], 15-35% by mole of a structural unit derived from an aliphatic dicarboxylic acid [C] (provided that the total of [A], [B] and [C] is 100% by mole), and a structural unit derived from an aliphatic diamine [D] having 4-12 carbon atoms. The molar ratio ([A]/[B]) is from 65/35 to 50/50, and the molar ratio ([C]/[B]) is from 30/70 to 50/50. The melting enthalpy ([increment]H) of the semiaromatic polyamide (I) as determined by differential scanning calorimetry (DSC) is 20-40 mJ/mg, and the intrinsic viscosity of the semiaromatic polyamide (I) is 0.7-1.6 dl/g.
    Type: Application
    Filed: November 12, 2013
    Publication date: November 19, 2015
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Isao WASHIO, Hiroki EBATA, Fumio KAGEYAMA, Toshitaka KOSAKA, Hideto OGASAWARA, Akinori AMANO, Nobuhiro TAKIZAWA
  • Patent number: 9153757
    Abstract: The purpose of the present invention is to provide a thermoplastic resin composition for a reflective material which has excellent mechanical strength, excellent heat resistance, excellent high reflectance, and excellent moldability, and which makes it possible to obtain a reflective plate with little decline in reflectance caused by heating. A first embodiment of this thermoplastic resin composition for a reflective material includes: a polyester resin (A) that has a melting point or glass transition temperature of 250° C. or higher and includes an alicyclic hydrocarbon structure; a thermoplastic resin (B) that has a polyolefin backbone and a functional group; a white pigment (C); and an inorganic filler (D); the thermoplastic resin (B) either including 0.1 to 1.8 wt % of a functional group unit (B1) that further includes a heteroatom, or further including an aromatic hydrocarbon structure (B2), and the limiting viscosity [?] being 0.04 to 1.0 dl/g.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: October 6, 2015
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Hideto Ogasawara, Takashi Hama, Kuniaki Kawabe, Hirotaka Kanaya, Nobuhiro Takizawa, Akinori Amano, Hiroki Ebata, Kan Komiya
  • Publication number: 20150274964
    Abstract: The purpose of the present invention is to provide a polyester resin with improved mechanical properties, molding performance, and, preferably, fire retardancy. This polyester resin composition contains the following: a polyester resin (A) that has a melting point or glass transition temperature of at least 250° C.; a thermoplastic resin (B) that has an olefin-derived constitutional unit and an aromatic hydrocarbon structure and has an intrinsic viscosity ([?]), as measured in decalin at 135° C., of 0.04 to 1.0 dl/g; and a copolymer (C) that has an olefin-derived constitutional unit, an ?,?-unsaturated-carboxylic-ester-derived constitutional unit, and a cyclic oxy-hydrocarbon structure.
    Type: Application
    Filed: November 19, 2013
    Publication date: October 1, 2015
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Isao Washio, Hideto Ogasawara, Hiroki Ebata, Fumio Kageyama, Nobuhiro Takizawa, Akinori Amano
  • Patent number: 9109065
    Abstract: Objects of the invention are to obtain ethylene copolymers which have excellent rubber elasticity even without being crosslinked and maintain sufficient shaping processability even when filled with significantly large amounts of additives, and to provide methods for producing with good productivity films or sheets having flexibility and high stretchability. The invention is directed to an ethylene copolymer (X) including structural units derived from a component [A], a component [B] and a component [C] which are ethylene [A], an ?-olefin of 3 to 20 carbon atoms [B] and a polyene and/or a cyclic olefin [C]. In the ethylene copolymer, (1) the content of structural units derived from the ethylene [A] is in the range of 50 to 90 mol % in 100 mol % of all the structural units in the copolymer (X); (2) the content of structural units derived from at least one polyene and/or the cyclic olefin [C] is in the range of 1.0 to 5.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: August 18, 2015
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Hiroki Ebata, Yoshiharu Kikuchi, Yuji Ishii, Yoshihisa Matsuo