Patents Assigned to Kuraray Co., Ltd.
  • Publication number: 20250101218
    Abstract: A curable resin composition that includes a curable resin (A) and acrylic rubber particles (B), the acrylic rubber particles (B) having a multilayer structure of two or more layers including an inner layer that includes a crosslinked rubber polymer having an acrylic acid ester unit, and an outermost layer that includes a hard polymer, the outermost layer of the acrylic rubber particles (B) having a thickness of 3.5 nm or more. Also an adhesive and a curing agent each including the curable resin composition, and a cured article of the curable resin composition.
    Type: Application
    Filed: January 23, 2023
    Publication date: March 27, 2025
    Applicant: KURARAY CO., LTD.
    Inventors: Yasunari UMEDA, Kimitoshi NAKAMURA
  • Patent number: 12258276
    Abstract: One aspect of the present invention relates to a carbonaceous material which has a benzene adsorption of 25 to 40% and a vitamin B12 adsorption of 13.0 to 50.0 mg/g, while having a pore volume of mesopores of 0.070 to 0.150 cm3/g as calculated from a nitrogen adsorption isotherm by means of a BJH method.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: March 25, 2025
    Assignee: KURARAY CO., LTD.
    Inventors: Shuichi Ishida, Tetsuya Hanamoto, Hiroe Yoshinobu
  • Publication number: 20250091255
    Abstract: Provided is a composite material that is useful as a reinforcement, and the like. The composite material at least includes a woven fabric which contains weaving yarns being fibers each having a tensile elastic modulus of 20 GPa or higher, and a thermoplastic elastomer resin. The thermoplastic elastomer resin penetrates through openings of the woven fabric from one surface of the woven fabric, and is exposed at another surface.
    Type: Application
    Filed: December 27, 2022
    Publication date: March 20, 2025
    Applicant: KURARAY CO., LTD.
    Inventors: Kazumasa KUSUDO, Yoshifumi ASO, Satoshi KATSUYA
  • Publication number: 20250091260
    Abstract: The present invention relates to a method for producing a resin sheet containing at least the following step P, Step P: a step of applying pressure (p) to a sheet-shaped resin modeled article formed by a 3D printer while heating, and deforming the sheet-shaped resin modeled article to obtain a compressed sheet; and relates to a polishing pad containing a polishing layer obtained by using the method for producing.
    Type: Application
    Filed: January 30, 2023
    Publication date: March 20, 2025
    Applicant: KURARAY CO., LTD.
    Inventors: Mitsuru KATO, Takashi SUGIOKA
  • Publication number: 20250096452
    Abstract: An antenna system includes: a laminate including a plurality of high-frequency permeable layers; and an antenna circuit board including a high-frequency insulating layer. n-th layer of the plurality of high-frequency permeable layers has a thickness Ln within a range of Lnmin ±?(10??n). The n-th layer is at least one high-frequency permeable layer of the laminate. ?n denotes a relative dielectric constant of the n-th layer; ? denotes a wavelength of the high-frequency wave that is incident on the laminate; and Lnmin denotes a thickness of the n-th layer where an intensity of a reflected wave from the laminate is minimized, the intensity being determined as an intensity of a composite wave of reflected waves from a front surface, a back surface, and joint interfaces of the laminate.
    Type: Application
    Filed: January 17, 2023
    Publication date: March 20, 2025
    Applicant: KURARAY CO., LTD.
    Inventors: Keisuke IKEDA, Tatsuya SUNAMOTO, Minoru ONODERA
  • Patent number: 12252634
    Abstract: Disclosed are a polyurethane for use in a polishing layer, and a polishing layer and a polishing pad using the same, the polyurethane including a terminal group represented by the following formula (I): R—(OX)n— (I) wherein R represents a monovalent hydrocarbon group having 1 to 30 carbon atoms that may be substituted with a heteroatom or may be interrupted by a heteroatom, X represents an alkylene group having 2 to 4 carbon atoms, 90 to 100% of the alkylene group being an ethylene group, and n represents a number from 8 to 120.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: March 18, 2025
    Assignee: KURARAY CO., LTD.
    Inventors: Mitsuru Kato, Chihiro Okamoto, Shinya Kato
  • Publication number: 20250083278
    Abstract: A polishing pad is provided with a spiral groove or concentric grooves disposed spanning from a central region to a peripheral edge region of a polishing surface of the polishing pad, and radial grooves including line segment-shaped grooves extending from the central region toward the peripheral edge region. The line segment-shaped grooves have a first end portion and a second end portion, positioned at a distance of 5 to 10% and at a distance of 35 to 70% of the radius of the polishing surface from a center of the radial grooves, respectively, and the line segment-shaped grooves have an average length of 30 to 65% of the radius of the polishing surface. A cross-sectional area Sa (mm2) of the line segment-shaped grooves and a cross-sectional area Sb (mm2) of the spiral groove or the concentric grooves satisfy 0.1?Sb/Sa<1.0.
    Type: Application
    Filed: August 1, 2022
    Publication date: March 13, 2025
    Applicant: KURARAY CO., LTD.
    Inventors: Azusa SUNAYAMA, Mitsuru KATO, Minori TAKEGOSHI
  • Patent number: 12247355
    Abstract: A coating agent for paper comprises: an ethylene-vinyl alcohol copolymer, wherein the ethylene-vinyl alcohol copolymer has a content of ethylene units of 1 mol % or more and less than 20 mol % and a block character of the ethylene units from 0.90 to 0.99. Coated paper is obtained by coating paper with such a coating agent. The coating agent of the present invention is excellent in viscosity stability and also causes the resulting coated paper to be excellent in barrier properties and water resistance.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: March 11, 2025
    Assignee: KURARAY CO., LTD.
    Inventor: Yuta Taoka
  • Publication number: 20250075381
    Abstract: A liquid crystal polyester multifilament has an initial modulus variation of 3.0% or less and a tensile strength of 18 cN/dtex or more.
    Type: Application
    Filed: November 18, 2024
    Publication date: March 6, 2025
    Applicant: KURARAY CO., LTD.
    Inventors: Keiichi IKEHATA, Junya IDE
  • Patent number: 12240928
    Abstract: A polyvinyl alcohol-based crosslinked copolymer may include an unsaturated monocarboxylic acid-based structural unit, wherein an amount of carboxylate-forming structural units in the crosslinked copolymer is 1% by mole or more and 35% by mole or less with respect to all structural units constituting the crosslinked copolymer, and a solubility of the crosslinked copolymer in water is 90% or less.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: March 4, 2025
    Assignee: KURARAY CO., LTD.
    Inventors: Yusuke Saegusa, Masahiro Baba, Toshinori Kato
  • Publication number: 20250068073
    Abstract: Provided is a photosensitive resin composition comprising a thermoplastic elastomer (A), a liquid farnesene rubber (B), an ethylenically unsaturated compound (C), and a photoinitiator (D).
    Type: Application
    Filed: December 22, 2022
    Publication date: February 27, 2025
    Applicant: KURARAY CO., LTD.
    Inventors: Yoshikazu UENO, Yosuke UEHARA
  • Patent number: 12233620
    Abstract: A thermoplastic liquid crystal polymer (TLCP) molded body including a thermoplastic polymer capable of forming an optically anisotropic melt phase. The TLCP molded body includes an adherend portion in at least a part of the TLCP molded body. The adherend portion has a surface satisfying: a ratio <C—O>/<COO> of 1.5 or greater in which the <C—O> represents a proportion of a peak area of [C—O bond] to a C(1s) peak area, and the <COO> represents a proportion of a peak area of [COO bond] based on the C(1s) peak area; and a ratio <C?O>/<COO> of 0.10 or higher in which the <C?O> represents a proportion of a peak area of [C?O bond] based on the C(1s) peak area, and the <COO> represents the proportion of the peak area of the [COO bond] based on the C(1s) peak area in a result of X-ray photoelectron spectroscopy analysis.
    Type: Grant
    Filed: May 27, 2019
    Date of Patent: February 25, 2025
    Assignee: KURARAY CO., LTD.
    Inventors: Tatsuya Sunamoto, Shinji Hiramatsu, Minoru Onodera
  • Patent number: 12234333
    Abstract: Provided are a water-soluble film preferably used for production of a package that has excellent surface gloss and has excellent anti-blocking properties, and a package using the same. A water-soluble film includes a polyvinyl alcohol resin, wherein the water-soluble film has a glossy surface with an average height SRc(G) of 1.8 ?m or less and a maximum height SRz(G) of 20 ?m or more and 50 ?m or less.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: February 25, 2025
    Assignee: KURARAY CO., LTD.
    Inventors: Minoru Okamoto, Sayaka Shimizu, Osamu Kazeto
  • Publication number: 20250059325
    Abstract: A composite includes a polyamide (A) and continuous fibers (B), wherein the polyamide (A) comprises a diamine unit (X) and a dicarboxylic acid unit (Y), the diamine unit (X) comprises 0.1 mol % or more and less than 36 mol % of a diamine unit (X1), and the aliphatic diamine has 6 to 10 carbon atoms, the aliphatic diamine having an alkyl group having two or three carbon atoms bonded to a carbon atom at 2-position when a carbon atom to which any one of two amino groups is bonded is taken as 1-position.
    Type: Application
    Filed: December 19, 2022
    Publication date: February 20, 2025
    Applicant: KURARAY CO., LTD.
    Inventor: Atsushi NANYA
  • Publication number: 20250059305
    Abstract: A vinyl alcohol copolymer may include a vinyl alcohol constituent unit and an olefin constituent unit vinyl alcohol having 3 to 30 carbon atoms. Such a copolymer may satisfy at least one of: a difference between a melting point and a lowest heat-sealing temperature is 45° C. or more; and the lowest heat-sealing temperature is 80° C. or less. Such a copolymer may satisfy predetermined relational formulas based on intensities and the number average molecular weight obtained from a UV absorption detector and a refractive index detector in gel permeation chromatography measurement performed on the copolymer.
    Type: Application
    Filed: December 22, 2022
    Publication date: February 20, 2025
    Applicant: Kuraray Co., Ltd.
    Inventors: Masahiro BABA, Shinnosuke AKUTAGAWA, Shingo UEYAMA, Hiroyuki KONISHI
  • Publication number: 20250059306
    Abstract: Provided is a modified product of a hydrogenated product of a block copolymer that can be added to obtain a resin composition having an excellent balance of mechanical properties such as tensile strength, tensile strain at break, and impact resistance. A modified hydrogenated product of a block copolymer including a polymer block containing a structural unit derived from an aromatic vinyl compound and a polymer block containing a structural unit derived from a conjugated diene compound, in which the conjugated diene compound contains isoprene and a conjugated diene compound other than isoprene; the polymer block has a vinyl bonding amount of 30 mol % or less; the modified hydrogenated product has one, or two or more functional groups selected from an alkoxysilyl group, a carboxy group, an amino group, a hydroxy group, an epoxy group, and an acid anhydride-derived group, and has a peak top intensity of loss tangent of 0.95 or less and a melt flow rate (MFR) of 0.5 g/10 min or more.
    Type: Application
    Filed: December 15, 2022
    Publication date: February 20, 2025
    Applicant: KURARAY CO., LTD.
    Inventors: Masahiro KATO, Yasushi SENDA, Ryo SATANI
  • Publication number: 20250059326
    Abstract: Provided is a polyamide composition, which has high moldability and excellent heat resistance and chemical resistance. The polyamide composition contains a polyamide (A), a copper compound (B1) and a metal halide (B2), and in which the polyamide (A) comprises a diamine unit (X) and a dicarboxylic acid unit (Y), the diamine unit (X) contains 0.1 mol % or more and less than 36 mol % of a diamine unit (X1), and the diamine unit (X1) is a diamine unit derived from an aliphatic diamine, in which the aliphatic diamine has 6 to 10 carbon atoms, the aliphatic diamine having an alkyl group having 2 or 3 carbon atoms bonded to a carbon atom at 2-position when a carbon atom to which any one of two amino groups is bonded is taken as 1-position.
    Type: Application
    Filed: December 19, 2022
    Publication date: February 20, 2025
    Applicant: KURARAY CO., LTD.
    Inventors: Naoto SUGAI, Atsushi NANYA
  • Publication number: 20250059346
    Abstract: Provided is a polyamide composition, which has high moldability and excellent heat resistance and chemical resistance. The polyamide composition contains a polyamide (A) and an organic heat stabilizer (B), and in which the polyamide (A) contains a diamine unit (X) and a dicarboxylic acid unit (Y), the diamine unit (X) contains 0.1 mol % or more and less than 36 mol % of a diamine unit (X1), and the diamine unit (X1) is a constituent unit derived from an aliphatic diamine, in which the aliphatic diamine has 6 to 10 carbon atoms, the aliphatic diamine having an alkyl group having 2 or 3 carbon atoms bonded to a carbon atom at 2-position when a carbon atom to which any one of two amino groups is bonded is taken as 1-position.
    Type: Application
    Filed: December 19, 2022
    Publication date: February 20, 2025
    Applicant: KURARAY CO., LTD.
    Inventors: Naoto SUGAI, Atsushi NANYA
  • Patent number: D1067374
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: March 18, 2025
    Assignee: KURARAY CO., LTD.
    Inventors: Youhei Yabuno, Kazuhiko Eda
  • Patent number: D1067375
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: March 18, 2025
    Assignee: KURARAY CO., LTD.
    Inventors: Youhei Yabuno, Kazuhiko Eda