Patents Assigned to Toyobo Co., Ltd.
  • Publication number: 20250114820
    Abstract: A problem is to provide a layered film that exhibits favorable liquid-repellent properties with respect to both water and oil and is excellent in transparency, and an efficient production method therefor. A solution is a layered film including a coating layer containing a polyester resin A and fine particles C having surfaces subjected to hydrophobization treatment on a resin substrate film, in which the layered film has a haze value of 10% or less and a water sliding angle of 10 degrees or more and less than 70 degrees, and a production method for the layered film, in which a coating layer is layered using a coating liquid containing a specific solvent.
    Type: Application
    Filed: January 6, 2023
    Publication date: April 10, 2025
    Applicant: TOYOBO CO., LTD.
    Inventors: Miyuki HAYASHI, Kento YOSHINO, Hideki TANAKA
  • Patent number: 12269243
    Abstract: The invention provides a biaxially-oriented polypropylene film that contains a base layer (A) comprising a polypropylene resin as a main component, a surface layer (B) provided at one side of the base layer (A), and a surface layer (C) provided at one side of the base layer (A) opposite to the surface layer (B), wherein the surface layer (B) has a wetting tension of 38 mN or more, a surface resistance value of 14.0 Log ? or more, an arithmetic average roughness (Ra) of 3.0-5.5 nm, a Martens hardness of 248 N/mm2 or less, and a center plane average surface roughness (SRa) of 0.010-0.026 ?m, and the surface layer (C) has a center plane average surface roughness (SRa) of 0.020 ?m or more and a Martens hardness of 270 N/mm2 or more.
    Type: Grant
    Filed: June 14, 2021
    Date of Patent: April 8, 2025
    Assignee: TOYOBO CO., LTD.
    Inventors: Mahiro Nakano, Toru Imai
  • Publication number: 20250099920
    Abstract: A semipermeable membrane comprising a polyether sulfone, a sulfonated polyarylene ether copolymer, and polyvinylpyrrolidone, having cytokine adsorption capabilities suitable for continuous renal replacement therapy. The sulfonated polyarylene ether copolymer includes a hydrophobic segment repeating unit represented by a formula (1) and a hydrophilic segment repeating unit represented by a formula (2) as copolymerization components. A ratio of (the polyether sulfone)/(the sulfonated polyarylene ether copolymer)/(the polyvinylpyrrolidone) (in mass) in the entirety of the semipermeable membrane is (75 to 90)/(7 to 22)/(3 to 18).
    Type: Application
    Filed: July 11, 2022
    Publication date: March 27, 2025
    Applicants: TOYOBO CO., LTD., KANEKA CORPORATION
    Inventors: Shinya Koyama, Koji Fujita
  • Publication number: 20250101280
    Abstract: An object of the present invention is to provide an adhesive composition having high tensile lap-shear strength from substrates and high curing properties. An adhesive composition comprising an aromatic epoxy resin (A) with two or more functional groups, an aliphatic epoxy resin (B) with two or more functional groups, an epoxy resin hardener (C), a hardening accelerator (D), and a thixotropic agent (E), wherein the aliphatic epoxy resin (B) has a total chlorine content of 1.0% by mass or less.
    Type: Application
    Filed: December 20, 2022
    Publication date: March 27, 2025
    Applicant: TOYOBO CO., LTD.
    Inventor: Takuya SHIBA
  • Patent number: 12257811
    Abstract: A polyolefin-based film comprising at least one layer permitting printing as a result of laser irradiation; wherein not less than 100 ppm but not greater than 3000 ppm of pigment permitting printing as a result of laser irradiation is present in all layers of the film; haze thereof is not less than 1% but not greater than 30%; and unevenness in thickness thereof in either a machine direction or a transverse direction is not less than 0.1% but not greater than 25%. An object is to provide a film capable of being printed in distinct fashion by a laser, that excels with respect to unevenness in thickness, and that is of high transparency, and at the same time provide packaging which employs such film and on which printing has been directly carried out.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: March 25, 2025
    Assignee: TOYOBO CO., LTD.
    Inventors: Shintaro Ishimaru, Masayuki Haruta
  • Patent number: 12258457
    Abstract: The invention provides a heat-shrinkable polyester-based film containing 90 mol % or more of ethylene terephthalate unit based on 100 mol % of whole ester unit, wherein at least a part of ethylene glycol and/or terephthalic acid constituting the ethylene terephthalate unit is derived from biomass resource or the heat-shrinkable polyester-based film contains polyester resin recycled from PET bottles, and the heat-shrinkable polyester-based film satisfies the requirements: (1) heat-shrinkage ratio in a width direction measured by shrinking the film for 10 seconds in 90° C. hot water is 50%-75%, (2) heat-shrinkage ratio in a longitudinal direction measured by shrinking the film for 10 seconds in 90° C. hot water is ?6% or more and 14% or less, (3) heat-shrinkage ratio in the longitudinal direction measured by shrinking the film for 10 seconds in 70° C. hot water is ?6% or more and 6% or less, and (4) irregularity of thickness in the width direction is 1%-20%.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: March 25, 2025
    Assignee: TOYOBO CO., LTD.
    Inventors: Shintaro Ishimaru, Masayuki Haruta
  • Patent number: 12252091
    Abstract: The present disclosure describes using additional yarn having a boiling-water shrinkage rate less than that of the base yarn, thereby suppressing shrinkage at the sides in the width direction of the fabric and thus reducing the difference in the crimp ratio between the center in the width direction of the fabric and the sides in the width direction. This enables the production of a fabric for airbags with high uniformity in the width direction.
    Type: Grant
    Filed: November 16, 2021
    Date of Patent: March 18, 2025
    Assignee: TOYOBO CO., LTD.
    Inventor: Hiroya Takeuchi
  • Publication number: 20250075032
    Abstract: An object of the present invention is to provide copolyester resin having a furan skeleton and configured to enhance a crystallization rate and solve a problem in production such as blocking, and further avoid a risk such as bleed-out. The invention specifically provides a copolyester resin comprising: a polyvalent carboxylic acid component and a polyhydric alcohol component as constituent components, wherein the polyvalent carboxylic acid component contains a polyvalent carboxylic acid component (A) having a furan skeleton, and an aliphatic polyvalent carboxylic acid component (B) at a molar ratio of (A)/(B)=95/5 to 99.9/0.1.
    Type: Application
    Filed: January 6, 2023
    Publication date: March 6, 2025
    Applicant: TOYOBO CO., LTD.
    Inventors: Yu YAMAMOTO, Maki KINAMI
  • Publication number: 20250073977
    Abstract: The invention provides a carbon-neutral biaxially stretched polyamide film containing a raw material derived from biomass and having high heat-resistance, impact resistance, and folding pinhole resistance, as well as decreased variability in a degree of biomass in the mechanical (longitudinal) direction. The biaxially stretched polyamide film roll contains biaxially stretched polyamide film containing 70-99% by mass of polyamide 6 resin and 1-30% by mass of a polyamide resin in which at least a part of a raw material is derived from biomass, wherein the film roll has a winding length of from 1,000 m to 60,000 m, a width of from 400 mm to 3,000 mm, and variability in a degree of biomass of 15% or less based on radiocarbon 14C measurement of a biaxially stretched polyamide film sample taken from a surface to a core of the film roll at an interval of 1000 m in an MD direction.
    Type: Application
    Filed: December 20, 2022
    Publication date: March 6, 2025
    Applicant: TOYOBO CO., LTD.
    Inventors: Ayame TORII, Takamichi GOTO
  • Patent number: 12241095
    Abstract: The present invention provides DNA polymerases that are highly resistant to inhibitors, and that can shorten the entire nucleic acid amplification reaction time by shortening the reverse transcription reaction time in a nucleic acid amplification method, in particular, in PCR or RT-PCR. The DNA polymerase is characterized by having reverse transcription activity, and comprising at least one amino acid modification at position 509 or 744 in SEQ ID NO: 1 or 2. In particular, the amino acid modification at position 509 or 744 in SEQ ID NO: 1 or 2 is substitution with histidine, lysine, or arginine.
    Type: Grant
    Filed: June 13, 2022
    Date of Patent: March 4, 2025
    Assignee: TOYOBO CO., LTD.
    Inventors: Tetsuhiro Kobayashi, Yasuhiro Arai
  • Patent number: 12241106
    Abstract: Provided is a means for increasing mannosylerythritol lipid (MEL) production efficiency. The present invention is a mannosylerythritol-lipid-producing microorganism transformed with an expression vector having a gene that encodes a lipase under the control of E5Pgap promoter or E5Ptef promoter.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: March 4, 2025
    Assignees: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, TOYOBO CO., LTD.
    Inventors: Tomotake Morita, Azusa Saika, Hideaki Koike, Tokuma Fukuoka, Dai Kitamoto, Tomohiro Sugahara, Shuhei Yamamoto, Atsushi Sogabe
  • Patent number: 12240211
    Abstract: The invention provides a polyester sealant film having at least one of a heat sealing layer and a heat resistant layer, wherein each layer consists of a polyester component containing ethylene terephthalate. The polyester sealant film has (1) a heat sealing strength of the heat sealing layers of 8-20 N/15 mm; (2) a difference in reversible heat capacity (?Cp) for the heat sealing layer of 0.5-1.1 J/g/K; (3) a ?Cp for the heat resistant layer of 0.1 to less than 0.6 J/g/K; (4) a fold holding angle of 20-60 degrees; (5) a smaller curvature radius of 50-300 mm in a longitudinal or widthwise direction; and (6) a heat shrinkage ratio of ?5% to 5% in both longitudinal and widthwise directions. The invention also provides a laminate comprising at least one layer of the polyester sealant and a packaging bag comprising the laminate.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: March 4, 2025
    Assignee: TOYOBO CO., LTD.
    Inventors: Shintaro Ishimaru, Masayuki Haruta
  • Publication number: 20250066088
    Abstract: A multilayer film comprising at least two layers being a base layer and an antifogging layer, wherein (a) the heat seal strength at each of the temperatures 120° C., 140° C., 160° C., and 180° C. is 2.0-12.0 N/15 mm, (b) the water contact angle under conditions in which the temperature is 5° C. and the relative humidity is 50% is 50° or smaller, (c) the peel strength of the antifogging layer surface and the substrate layer surface of the multilayer film is 1 N/15 mm or smaller, (d) the impact strength under conditions in which the temperature is 5° C. is 0.5 J or larger, (e) the tearing strength under conditions in which the temperature is 5° C. is 100 mN or larger in both the MD direction and the TD direction of the multilayer film, and (f) the thickness of the antifogging layer is 0.3 ?m or larger and smaller than 3.0 ?m.
    Type: Application
    Filed: December 20, 2022
    Publication date: February 27, 2025
    Applicant: TOYOBO CO., LTD.
    Inventors: Noboru TAMARI, Masayuki HARUTA
  • Publication number: 20250066539
    Abstract: An object of the present invention is to provide a thermoplastic copolyester that not only has toughness but also has excellent enzymatic degradability and excellent heat resistance. The invention specifically provides a thermoplastic copolyester comprising: a hard segment formed of an aromatic polyester structural unit; and a soft segment formed of an aliphatic polyester structural unit, wherein a content of the hard segment in the thermoplastic copolyester is 35 to 63 mass %, the aromatic polyester structural unit contains 70 mass % or more of an aromatic polyester component formed of a dicarboxylic acid component having a furan skeleton, and an aliphatic diol component, the aliphatic polyester structural unit contains 70 mass % or more of an aliphatic hydroxycarboxylic acid component, and the thermoplastic copolyester has a reduced viscosity ranging from 0.5 to 3.5 dl/g.
    Type: Application
    Filed: December 26, 2022
    Publication date: February 27, 2025
    Applicant: TOYOBO CO., LTD.
    Inventors: Miku SAKAI, Masako TATSUTA, Tamayo SASAI
  • Publication number: 20250066565
    Abstract: Provided is a biaxially oriented polypropylene film that is suitable as a raw film for processing and that, without impairing excellent transparency and mechanical properties intrinsically possessed by the biaxially oriented polypropylene film, exhibits excellent adhesiveness at the time of vapor deposition, coating, or lamination with another film and also has favorable slipperiness and blocking resistance. The biaxially oriented polypropylene film contains a base material layer (A) and a surface layer (B), each of which contains a polypropylene-based resin as a main component, wherein (1) the number of protrusions of 500 nm or larger in a surface area of 2000 ?m2 on the surface layer (B) is 50-200, (2) a surface of the surface layer (B) has a wetting tension of 38 mN/m or higher, (3) the surface has a Martens hardness of 350 N/mm2 or lower, and (4) the surface has an arithmetic average roughness (Ra) of 1.5-3.0 nm.
    Type: Application
    Filed: December 15, 2022
    Publication date: February 27, 2025
    Applicant: TOYOBO CO., LTD.
    Inventors: Atsushi KANAYA, Toru IMAI
  • Publication number: 20250065555
    Abstract: Provided is a packaging material formed with resins of types that have low environmental loads, and having necessary performances such as gas barrier properties, heat sealability, and processability required for packaging materials. A packaging material having at least one base film including a polyolefin-based resin as a main component and a heat sealable resin layer, wherein at least one of the base film delaminated from the packaging material has a heating elongation rate at 130° C., measured with a thermomechanical analyzer, of 6% or less both in the MD and TD direction, and the packaging material has an oxygen permeability of 60 ml/m2·d·MPa or less in an environment of 23° C. and 65% RH.
    Type: Application
    Filed: December 20, 2022
    Publication date: February 27, 2025
    Applicant: TOYOBO CO., LTD.
    Inventors: Atsushi YAMAZAKI, Daisuke IWATA, Mitsuhiro KASHIWA, Yuya YAMAGUCHI, Toru IMAI
  • Publication number: 20250059577
    Abstract: Provided is a novel reverse transcriptase with excellent thermal stability. A reverse transcriptase comprising the following amino acid sequence: (a) an amino acid sequence having at least 75% identity with the amino acid sequence represented by SEQ ID NO: 2 or 3; or (b) an amino acid sequence having deletion, substitution, insertion, or addition of one or several amino acids in the amino acid sequence represented by SEQ ID NO: 2 or 3.
    Type: Application
    Filed: December 14, 2022
    Publication date: February 20, 2025
    Applicants: TOYOBO CO., LTD., SHIZUOKA PREFECTURAL UNIVERSITY CORPORATION
    Inventors: Sho YOKOE, Kensuke OCHI, Shogo NAKANO, Sohei ITO
  • Publication number: 20250059335
    Abstract: Provided is a biaxially oriented polypropylene-based film that is suitable as a raw film for processing and that, without impairing excellent transparency and mechanical properties intrinsically possessed by the biaxially oriented polypropylene-based film, exhibits excellent adhesiveness at the time of vapor deposition, coating, or lamination with another film and also has favorable slipperiness and blocking resistance. The biaxially oriented polypropylene-based film contains at least base material layer (A), surface layer (B), and surface layer (C), each containing a polypropylene-based resin as a main component, wherein each of surface layers (B) and (C) has a wetting tension of 38 mN/m or higher and 50-200 protrusions of 500 nm or larger in a surface area of 2000 ?m2, and surface layers (B) and (C) have a Martens hardness of 350 N/mm2 or lower and 270 N/mm2 or lower, respectively, and an arithmetic average roughness (Ra) of 1.5-3.0 nm and 3.5-5.5 nm, respectively.
    Type: Application
    Filed: December 15, 2022
    Publication date: February 20, 2025
    Applicant: TOYOBO CO., LTD.
    Inventors: Atsushi KANAYA, Toru IMAI
  • Patent number: 12221251
    Abstract: [Problem] To provide a heat-shrinkable polyester film having excellent shrink finishing property due to the film's sufficient heat shrinkability and low shrinkage stress in the longitudinal direction, small change in the non-shrinkable direction of the film. [Solution] The heat-shrinkable polyester film which heat-shrinks in the longitudinal direction and satisfying the following (1) to (6); (1) having a shrinkage of 35% to 70% in the longitudinal direction; (2) having a shrinkage of ?8% to 7% in the width direction; (3) having a change rate of 5% to 22% when fixed in the longitudinal direction with fixed-length; (4) having a change rate of 5% to 20% in the width direction when fixed with 10% of slack in the longitudinal direction; (5) having a maximum shrinkage stress of 5 MPa to 15 MPa in the longitudinal direction; (6) having a stress at 10% elongation, F10, of 1 MPa to 5 MPa in the longitudinal direction and 0.5 MPa to 3 MPa in the width direction.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: February 11, 2025
    Assignee: TOYOBO CO., LTD.
    Inventors: Masayuki Haruta, Norimi Tabota
  • Patent number: 12221518
    Abstract: The objective of the present invention is to provide a biaxially stretched polyamide film that is excellent in an impact resistance, a folding pinhole resistance and a friction pinhole resistance and that is produced from a raw material derived from a biomass. The present invention relates to a biaxially stretched polyamide film, comprising 99 to 70 mass % of a Polyamide 6 resin and 1 to 30 mass % of a polyamide resin, wherein at least a part of a raw material of the polyamide resin is derived from a biomass, and the biaxially stretched polyamide film meets the following (a) and (b): (a) the number of Gelbo pinhole defect is 10 or less after the biaxially stretched polyamide film is twisted and bent 1000 times at 1° C. using a Gelbo flex tester, (b) a distance leading to a pinhole formation by a friction resistance pinhole test is 2900 cm or more.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: February 11, 2025
    Assignee: TOYOBO CO., LTD.
    Inventors: Takuro Endo, Kosuke Hama, Takamichi Goto, Shigetomo Yamamoto