Patents by Inventor Kuniaki Kawabe

Kuniaki Kawabe 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: 20240101737
    Abstract: A water dispersion composition containing an ethylene·?-olefin copolymer acid-modified product (B) in a range of 0.01 to 50% by mass, wherein the ethylene·?-olefin copolymer acid-modified product (B) is an acid-modified product of an ethylene·?-olefin copolymer (A) satisfying requirements (A1) to (A6) as specified herein and also satisfies the requirements (B1) to (B5) as specified herein.
    Type: Application
    Filed: January 18, 2022
    Publication date: March 28, 2024
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Atsushi TAKESHIMA, Takurou WATANABE, Terufumi SUZUKI, Shota ABE, Kuniaki KAWABE
  • Patent number: 11577995
    Abstract: The purpose of the present invention is to provide a fiber-sizing agent which when applied to an inorganic reinforcement material contained in a resin composition, can provide a molded article having excellent impact resistance and high surface gloss properties. The fiber-sizing agent according to the present invention contains a modified olefin wax (A), a polyolefin resin (B), and a silane-coupling agent (C), wherein the mass ratio (A)/(B) of the modified olefin wax (A) to the polyolefin resin (B) is in the range of 0.2-10.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: February 14, 2023
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Hirotaka Kanaya, Kuniaki Kawabe, Yosuke Takahashi, Koji Matsunaga, Masaya Kusumoto, Takuya Tamura
  • Publication number: 20220411659
    Abstract: An object of the present invention is to obtain a composition having, for example, improved anti-sagging properties, pigment dispersibility, and crack resistance, and the present invention relates to an ethylene/?-olefin copolymer composition including: an ethylene/?-olefin copolymer (A) satisfying requirements (a-1) to (a-3) described below; one or more selected from a color material (D), a resin (E) and an oil (F); and a solvent (C), (a-1) a methyl group index measured by 1H-NMR is in a range of 40 to 60%, (a-2) a weight average molecular weight (Mw) determined by gel permeation chromatography (GPC) is in a range of 3,000 to 30,000, (a-3) no melting peak is observed at temperatures ranging from ?100° C. to 150° C. in differential scanning calorimetry (DSC).
    Type: Application
    Filed: October 6, 2020
    Publication date: December 29, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Yuto YOSHIDA, Kuniaki KAWABE
  • Patent number: 11453768
    Abstract: A novel vinyl chloride resin composition having exceptional transparency is provided. This resin composition comprises 3-15 parts by mass of a rubbery impact-absorbing material (B) for which the glass transition point in differential scanning calorimetry does not exceed 0° C., and 0.1-10 parts by mass of a lubricant (C) that satisfies (i)-(iv) below, the content amounts above being indicated relative to 100 parts by mass of a vinyl chloride resin (A) having a chlorine content of 55-75 mass %. (i) The melt viscosity at 200° C. is 5-5,000 mPa·s (ii) The softening point is in the range of 60?180° C. (iii) The glass transition point (Tg) as measured in DSC is in the range of 0?100° C.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: September 27, 2022
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Hirotaka Kanaya, Kuniaki Kawabe, Yosuke Takahashi, Koji Matsunaga
  • Patent number: 11396564
    Abstract: The purpose of the present invention is to provide an electroconductive resin composition that has excellent electroconductivity and high mechanical strength. The electroconductive resin composition according to the present invention comprises 75-99 parts by mass of a thermoplastic resin (A), 1-25 parts by mass of a carbon material (B), and more than 1 part by mass but not more than 10 parts by mass, per 100 parts by mass of the total amount of the thermoplastic resin (A) and the carbon material (B), of a modified polyolefin wax (C), wherein the carbon material (B) is a granular carbon material having an average grain diameter of 500 nm or less or a fibrous carbon material having an average fiber length of 1000 ?m or less.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: July 26, 2022
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Hirotaka Kanaya, Kuniaki Kawabe, Yosuke Takahashi, Koji Matsunaga
  • Publication number: 20220208413
    Abstract: The present invention addresses the problem of providing an electroconductive resin composition which combines high electrical conductivity with excellent processability. The electroconductive resin composition comprises a thermoplastic resin (A), carbon nanotubes (B) having an outer diameter of 100 nm or smaller, and an aromatic-monomer-modified polyolefin wax (C) obtained by modifying a polyolefin wax with an aromatic monomer. The composition comprises the thermoplastic resin (A), the carbon nanotubes (B), and the aromatic-monomer-modified polyolefin wax (C) in amounts of 74.9-99.4 parts by mass, 0.5-25 parts by mass, and 0.1-10 parts by mass, respectively, with respect to 100 parts by mass of the sum of the thermoplastic resin (A), the carbon nanotubes (B), and the aromatic-monomer-modified polyolefin wax (C).
    Type: Application
    Filed: April 23, 2020
    Publication date: June 30, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Hirotaka KANAYA, Yosuke TAKAHASHI, Koji MATSUNAGA, Kuniaki KAWABE
  • Publication number: 20220153978
    Abstract: A resin composition, a shaped article, a fiber, a film and a sheet. The resin composition includes two or more kinds of polyolefin resins (A), and 0.05 to 10 mass % of an ?-olefin (co)polymer (B) satisfying requirements (b-1) to (b-3): (b-1) A methyl group index is 40 to 60%. The methyl group index is a ratio of an integral of a peak observed in a range of 0.50 to 1.15 ppm to an integral of peaks observed in a range of 0.50 to 2.20 ppm in a 1H-NMR spectrum of a solution of the (co)polymer (B) in deuterated chloroform, positions of the peaks being calculated relative to a solvent peak at 7.24 ppm assigned to CHCl3 in deuterated chloroform as a reference. (b-2) A weight average molecular weight determined by GPC is 1,500 to 20,000. (b-3) No melting point is observed from ?100 to 150° C. in DSC.
    Type: Application
    Filed: March 23, 2020
    Publication date: May 19, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Yuto YOSHIDA, Atsushi TAKESHIMA, Terufumi SUZUKI, Kouji MATSUNAGA, Kuniaki KAWABE
  • Publication number: 20210347974
    Abstract: A novel vinyl chloride resin composition having exceptional transparency is provided. This resin composition comprises 3-15 parts by mass of a rubbery impact-absorbing material (B) for which the glass transition point in differential scanning calorimetry does not exceed 0° C., and 0.1-10 parts by mass of a lubricant (C) that satisfies (i)-(iv) below, the content amounts above being indicated relative to 100 parts by mass of a vinyl chloride resin (A) having a chlorine content of 55-75 mass %. (i) The melt viscosity at 200° C. is 5-5,000 mPa·s (ii) The softening point is in the range of 60?180° C. (iii) The glass transition point (Tg) as measured in DSC is in the range of 0?100° C.
    Type: Application
    Filed: January 23, 2018
    Publication date: November 11, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Hirotaka KANAYA, Kuniaki KAWABE, Yosuke TAKAHASHI, Koji MATSUNAGA
  • Publication number: 20210155833
    Abstract: A tackifier (B) according to the present invention comprises a copolymer (C) that comprises a structural unit derived from ?-methylstyrene or isopropenyltoluene and a structural unit derived from styrene, and the copolymer (C) satisfies the following (i) to (iii): (i) a content of the structural unit derived from ?-methylstyrene or isopropenyltoluene is in the range of 30 to 70 mol %, (ii) a softening temperature (Tm) measured by the ring-and-ball method according to JIS K 2207 is in the range of 110° C. to 170° C., and (iii) a content of a fraction having molecular weight of not more than 350, as determine by gel permeation chromatography (GPC) and calculated from polystyrene standard, is less than 1.5 mass %.
    Type: Application
    Filed: April 10, 2019
    Publication date: May 27, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Hirotaka KANAYA, Yosuke TAKAHASHI, Koji MATSUNAGA, Kuniaki KAWABE
  • Publication number: 20210078901
    Abstract: The purpose of the present invention is to provide a fiber-sizing agent which when applied to an inorganic reinforcement material contained in a resin composition, can provide a molded article having excellent impact resistance and high surface gloss properties. The fiber-sizing agent according to the present invention contains a modified olefin wax (A), a polyolefin resin (B), and a silane-coupling agent (C), wherein the mass ratio (A)/(B) of the modified olefin wax (A) to the polyolefin resin (B) is in the range of 0.2-10.
    Type: Application
    Filed: August 22, 2018
    Publication date: March 18, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Hirotaka KANAYA, Kuniaki KAWABE, Yosuke TAKAHASHI, Koji MATSUNAGA, Masaya KUSUMOTO, Takuya TAMURA
  • Publication number: 20200010588
    Abstract: The purpose of the present invention is to provide an electroconductive resin composition that has excellent electroconductivity and high mechanical strength. The electroconductive resin composition according to the present invention comprises 75-99 parts by mass of a thermoplastic resin (A), 1-25 parts by mass of a carbon material (B), and more than 1 part by mass but not more than 10 parts by mass, per 100 parts by mass of the total amount of the thermoplastic resin (A) and the carbon material (B), of a modified polyolefin wax (C), wherein the carbon material (B) is a granular carbon material having an average grain diameter of 500 nm or less or a fibrous carbon material having an average fiber length of 1000 ?m or less.
    Type: Application
    Filed: February 23, 2018
    Publication date: January 9, 2020
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Hirotaka KANAYA, Kuniaki KAWABE, Yosuke TAKAHASHI, Koji MATSUNAGA
  • Patent number: 10414915
    Abstract: The purpose of the present invention is to provide: a vinyl chloride resin composition having exceptional impact resistance, processability, and heat resistance. The present invention provides: a resin composition that contains 3-15 parts by mass of a rubber-based impact-absorbing material and 0.1-10 parts by mass of a modified olefin wax per 100 parts by mass of a vinyl chloride resin. This resin composition satisfies the following requirements (I)-(III). (I) The chlorine content of the vinyl chloride resin is 55-75% by mass. (II) The glass transition temperature (Tg) in differential scanning calorimetry (DSC) of the rubber-based impact-absorbing material (B) is 0° C. or lower. (III) The modified olefin wax contains at least one polar group selected from halogens and carboxylic acid derivatives, and the polar group content is within the range of 0.1-50% by mass.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: September 17, 2019
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Hirotaka Kanaya, Kuniaki Kawabe, Yosuke Takahashi, Toshiyuki Ito
  • Publication number: 20190077949
    Abstract: The purpose of the present invention is to provide: a vinyl chloride resin composition having exceptional impact resistance, processability, and heat resistance. The present invention provides: a resin composition that contains 3-15 parts by mass of a rubber-based impact-absorbing material and 0.1-10 parts by mass of a modified olefin wax per 100 parts by mass of a vinyl chloride resin. This resin composition satisfies the following requirements (I)-(III). (I) The chlorine content of the vinyl chloride resin is 55-75% by mass. (II) The glass transition temperature (Tg) in differential scanning calorimetry (DSC) of the rubber-based impact-absorbing material (B) is 0° C. or lower. (III) The modified olefin wax contains at least one polar group selected from halogens and carboxylic acid derivatives, and the polar group content is within the range of 0.1-50% by mass.
    Type: Application
    Filed: October 3, 2016
    Publication date: March 14, 2019
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Hirotaka KANAYA, Kuniaki KAWABE, Yosuke TAKAHASHI, Toshiyuki ITO
  • Patent number: 10072171
    Abstract: The present invention relates to an olefin-based paint. The purpose of the present invention is to provide a paint with excellent organic solvent solubility or dispersibility, low paint viscosity, minimal coating irregularities even at high concentrations, excellent handling and storage stability, and excellent blocking resistance and coated film stability. In order to meet this purpose, an olefin-based paint is used that is characterized by containing a solution or dispersion obtained by dissolving or dispersing 0.1-55 parts by mass of a propylene-?-olefin copolymer (A) for 100 parts by mass of an organic solvent. The copolymer (A) is characterized by containing 60-90 mol % of propylene-derived constituent units (a) having a weight-average molecular weight (Mw), measured by GPC, in the range of 3,000 to 40,000, and 10-40 mol % of ?-olefin-derived constituent units (b) having 4 or more carbon atoms [wherein (a)+(b)=100 mol %].
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: September 11, 2018
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Kuniaki Kawabe, Hirotaka Kanaya, Masakazu Tanaka, Toshiyuki Ito
  • Patent number: 10072116
    Abstract: The purpose of the present invention is to provide a polar-group-containing propylene-type wax having excellent properties including a low melting point. A modified propylene-(?-olefin) copolymer (A) according to the present invention is produced by grafting at least one compound selected from an unsaturated carboxylic acid, a derivative of the unsaturated carboxylic acid and an unsaturated sulfonic acid salt onto a propylene-(?-olefin) copolymer (A1) and has an acid value of 1 to 100 KOHmg/g, wherein the propylene-(?-olefin) copolymer (A1) comprises 60 to 95 mol % of a propylene-derived constituent unit (a) and 5 to 40 mol % of a constituent unit (b) derived from an ?-olefin having 4 or more carbon atoms, and satisfies the specific requirements (i) to (iii).
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: September 11, 2018
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Kuniaki Kawabe, Hirotaka Kanaya, Masakazu Tanaka, Toshiyuki Ito, Masako Yoshida
  • Patent number: 10053562
    Abstract: Provided is a resin composition which contains (A) a polyethylene wax satisfying the requirements (i)-(iv) described below and (B) at least one resin selected from the group consisting of thermoplastic resins and thermosetting resins, wherein the mass ratio of (A) to (B) is from 0.1/99.9 to 50/50. This resin composition is useful for providing a toner which can be fixed by means of a relatively-low-temperature heating body and has good offset resistance, and which is suppressed in increase of particle diameters even if the toner is stored for a long period of time. (i) The weight average molecular weight (Mw) is within the range from 400 to 1,500. (ii) The molecular weight distribution (Mw/Mn) is within the range from 1.2 to 2.5. (iii) The penetration as measured at 25° C. is 5 dmm or less. (iv) The melting point (Tm) is within the range from 50° C. to 110° C.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: August 21, 2018
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Masakazu Tanaka, Kuniaki Kawabe, Hirotaka Kanaya, Keiichi Taki, Yuichi Kaida
  • Patent number: 9944779
    Abstract: Provided is a resin composition containing: (A) an ethylene/?-olefin copolymer containing 91.0-99.9 parts by mole of (a) an ethylene-derived unit and 0.1-9.0 parts by mole of (b) a C3-C8 ?-olefin-derived unit (wherein (a)+(b) is 100 parts by mole), while satisfying the requirements (i)-(iv) and (B) a thermoplastic resin and/or a thermosetting resin, wherein the mass ratio (A)/(B) is 0.1/99.9 to 50/50. This resin composition is useful for providing a toner which can be fixed by a relatively-low-temperature heating body and has good offset resistance, and which is suppressed in increase of particle diameters even if the toner is stored for a long time. (i) The Mw is 400 to 1,500. (ii) The Mw/Mn is 1.2 to 2.5. (iii) The penetration measured at 25° C. is 13 dmm or less. (iv) The melting temperature is 50° C. to 110° C.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: April 17, 2018
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Masakazu Tanaka, Kuniaki Kawabe, Hirotaka Kanaya, Keiichi Taki, Yuichi Kaida
  • Publication number: 20170314174
    Abstract: A spunbond nonwoven fabric, comprising fibers of a propylene-based polymer composition containing 100 parts by mass of a propylene-based polymer (A) and 1 part by mass to 10 parts by mass of an ethylene-based polymer (B) having a density of from 0.93 g/cm3 to 0.98 g/cm3, wherein air permeability measured in accordance with JIS L 1096 (2010) by a Frazier type air permeability tester at a flow rate corresponding to a pressure differential of 125 Pa is 500 cm3/cm2/s or less.
    Type: Application
    Filed: October 30, 2015
    Publication date: November 2, 2017
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Taro ICHIKAWA, Yusuke SEKIOKA, Kuniaki KAWABE
  • Patent number: 9657117
    Abstract: [Object] To provide a resin composition with excellent mold releasability and blocking resistance. [Solution] A resin composition containing a 4-methyl-1-pentene polymer includes 0.01 to 10 parts by mass of a 4-methyl-1-pentene polymer (B) per 100 parts by mass of at least one resin (A) selected from the group consisting of thermoplastic resins and thermosetting resins, wherein the 4-methyl-1-pentene polymer (B) has (B1) an intrinsic viscosity [?] of 0.01 or more but less than 0.50 dl/g measured at 135° C. in a decalin solvent.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: May 23, 2017
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Kuniaki Kawabe, Masayoshi Sutou, Toshiyuki Itou, Mai Kurihara, Akinori Etoh, Shinichirou Asao, Kenji Sugimura, Hiroshi Hoya, Koji Matsunaga, Yoji Hayakawa, Kunihiko Mizumoto
  • Patent number: 9606465
    Abstract: Provided are a propylene-based polymer useful for providing a toner that is excellent in offset resistance, can be fixed by using a low-temperature heating element and hardly has stickiness even after stored for a long period of time; and a toner including said propylene-based polymer. The present invention is directed to a propylene/?-olefin copolymer (A) which includes 60 to 90 mol % of structural units derived from propylene (a) and 10 to 40 mol % of structural units derived from ?-olefins having 4 or more carbon atom (b) wherein (a)+(b)=100 mol % and which satisfies: (i) a weight average molecular weight (Mw) as measured by GPC of 3,000 to 40,000; (ii) a melting point (Tm) as measured by DSC of 60 to 90° C.; and (iii) a half width of a crystalline melting point peak as measured by DSC of 1 to 20° C.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: March 28, 2017
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Kuniaki Kawabe, Hirotaka Kanaya, Toshiyuki Ito, Kan Komiya