Patents Assigned to Sekisui Chemical Co., Ltd.
  • Publication number: 20250109269
    Abstract: The present invention provides a thermally expandable microcapsule that enables the production of a light molded article with high expansion ratio and excellent appearance, as well as a foamable resin composition and a foam that are produced using the thermally expandable microcapsule. Provided is a thermally expandable microcapsule including: a shell containing a polymer; and a volatile expansion agent as a core agent encapsulated by the shell, the shell containing silicon dioxide and a polymer obtained by polymerizing a monomer composition containing a carbonyl group-containing monomer, the thermally expandable microcapsule having a volatile content of 0.55% by weight or more and 2% by weight or less upon standing for one hour at a temperature of 70° C.
    Type: Application
    Filed: January 18, 2023
    Publication date: April 3, 2025
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Yasuhiro KAWAGUCHI, Kouji TAMURA
  • Publication number: 20250109322
    Abstract: The present invention aims to provide an adhesive tape having excellent adhesion and exhibiting excellent holding power even under prolonged shear stress at high temperature. Provided is an adhesive tape including an adhesive layer, the adhesive layer containing an acrylic copolymer containing a structural unit derived from an alkyl (meth)acrylate and a structural unit derived from an olefin polymer having a polymerizable unsaturated double bond at an end, the adhesive layer having a swelling ratio of 40 or greater and 500 or less when immersed in tetrahydrofuran at a temperature of 25° C. for 24 hours.
    Type: Application
    Filed: January 18, 2023
    Publication date: April 3, 2025
    Applicant: Sekisui Chemical Co., Ltd.
    Inventors: Nagisa TSUJI, Yudai OGATA
  • Patent number: 12264311
    Abstract: Provided is a nucleic acid isolation method whereby it becomes possible to extract a nucleic acid in a simple manner without the need to use an alcohol. A nucleic acid isolation method, comprising the steps of: mixing a specimen containing a nucleic acid with an extraction solution to disperse the nucleic acid in the extraction solution; bringing the extraction solution containing the nucleic acid into contact with an anionic adsorbent; bringing a washing solution into contact with the anionic adsorbent; and bringing a collection solution into contact with the anionic adsorbent, the extraction solution containing a protein denaturant, the washing solution containing a basic compound and having a pH value equal to or less than a pKa value of a conjugate acid of the basic compound, and the collection solution having a pH value equal to or more than the pKa value of the conjugate acid of the basic compound.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: April 1, 2025
    Assignees: SEKISUI CHEMICAL CO., LTD., SEKISUI MEDICAL CO., LTD.
    Inventors: Takamasa Kouno, Nobuhiko Inui, Tsutomu Nakamura, Tomoya Sasaki, Sou Yamaguchi, Katsura Uchida
  • Patent number: 12264239
    Abstract: The present invention provides a chlorinated polyvinyl chloride resin that provides a molded article having excellent heat cycle characteristics and excellent weather resistance, as well as a resin composition for molding and a molded article each including the chlorinated polyvinyl chloride resin. Provided is a chlorinated polyvinyl chloride resin, containing two components including a A30 component and a B30 component, the A30 component and the B30 component being determined by measuring the resin by a solid echo method using pulse NMR at 30° C. to give a free induction decay curve of 1H spin-spin relaxation, and subjecting the free induction decay curve to waveform separation into two curves derived from the A30 component and the B30 component in order of shorter relaxation time using the least square method, and having a ratio of T5B to TB [T5B/TB] of 96% or more and 120% or less, where TB is a relaxation time of the B30 component and T5B is a relaxation time of the B30 component after heating at 200° C.
    Type: Grant
    Filed: March 30, 2021
    Date of Patent: April 1, 2025
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Mitsuo Matsumoto, Ryota Yamasugi, Nami Nakajima, Yasunari Kusaka
  • Publication number: 20250100251
    Abstract: Provided is an interlayer film for laminated glass capable of suppressing color migration and enhancing the handling property of the interlayer film. An interlayer film for laminated glass according to the present invention contains a thermoplastic resin, a first plasticizer having a solubility parameter of less than 18.0 (J/cm3)0.5, and a second plasticizer having a solubility parameter of 18.0 (J/cm3)0.5 or more.
    Type: Application
    Filed: November 30, 2022
    Publication date: March 27, 2025
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Moyuru OKAJIMA, Atsushi NOHARA, Yuitsu SUGAMI
  • Publication number: 20250105525
    Abstract: Provided is a radio wave reflector that can reflect radio waves while the intensity thereof is maintained and that can maintain the scenery. The radio wave reflector of the present invention is a radio wave reflector for reflecting radio waves, wherein the intensity of a reflective wave as specular reflection of an incident wave is ?30 dB or more relative to the intensity of the incident wave at a frequency, and the radio wave reflector has a total light transmittance of 65% or more as measured using a standard illuminant D65.
    Type: Application
    Filed: December 23, 2022
    Publication date: March 27, 2025
    Applicant: SEKISUI CHEMICAL CO., LTD
    Inventors: Hiroyuki NOMOTO, Yasuaki IDE, Munehiro HATAI
  • Patent number: 12259076
    Abstract: An electrofusion joint includes a main body and a heating wire. The main body is configured to be connected to a resin pipe containing a thermoplastic resin. The heating wire is in the main body. The heating wire includes a conducting wire and an insulating cover film that is around the conducting wire. The insulating cover film has a melting point of at least 230 degrees.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: March 25, 2025
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Ayaka Kitagawa, Hiroaki Kondou, Kouzou Makino
  • Publication number: 20250091327
    Abstract: An interlayer film for laminated glass, including a thermoplastic resin and a filler (A) having visible light reflection performance.
    Type: Application
    Filed: January 18, 2023
    Publication date: March 20, 2025
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Atsushi NOHARA, Kazuhiko NAKAYAMA
  • Patent number: 12252577
    Abstract: The present invention provides a chlorinated polyvinyl chloride resin that enables the production of a molded article that maintains high adhesion strength even when used in a form subjected to high pressure and is less susceptible to defects such as cracks due to insufficient strength, as well as a resin composition for molding and a molded article each including the chlorinated polyvinyl chloride resin. Provided is a chlorinated polyvinyl chloride resin, containing two components including a A30 component and a B30 component, the A30 component and the B30 component being determined by measuring the resin by a solid echo method using pulse NMR at 30° C.
    Type: Grant
    Filed: March 30, 2021
    Date of Patent: March 18, 2025
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Ryota Yamasugi, Mitsuo Matsumoto, Nami Nakajima, Yasunari Kusaka
  • Publication number: 20250083419
    Abstract: The resin film of the present invention is such that, when one surface of a laminated glass obtained by adhesion of two sheets of standard glass having a thickness of 2.5 mm with the resin film being interposed is irradiated with simulated solar light by a solar simulator in a perpendicular direction, a ratio between a maximum value and a minimum value with respect to brightness measured in directions at angles relative to a direction perpendicular to other surface of the laminated glass, of 30°, 45°, 60° and 75°, is 0.1 or more. The laminated glass of the present invention comprises the resin film of the present invention and paired glass members, in which the resin film is placed between the paired glass members.
    Type: Application
    Filed: May 31, 2022
    Publication date: March 13, 2025
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventor: Yuusuke OOTA
  • Publication number: 20250083420
    Abstract: An interlayer film for laminated glass including a first resin layer including a thermoplastic resin and a second resin layer including a thermoplastic resin, wherein, for laminated glass made by adhering two clear glass plates to each other via the interlayer film for laminated glass, a visible light reflectance Rv1 measured on a surface on the first resin layer side is 10% or more and a visible light reflectance (Rv2) measured on a surface on the second resin layer side is 7% or less.
    Type: Application
    Filed: January 18, 2023
    Publication date: March 13, 2025
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Atsushi NOHARA, Kazuhiko NAKAYAMA, Sho FUJIOKA
  • Patent number: 12245353
    Abstract: An irradiator includes: a piezoelectric transformer accommodated in a housing; a first electrode connected to the piezoelectric transformer, to which a voltage is applied from the piezoelectric transformer; and an irradiation opening that ejects at least one of a plasma generated by the first electrode and an active gas generated by the plasma. At least a part of the first electrode is located between the piezoelectric transformer and the irradiation opening.
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: March 4, 2025
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Tatsuya Matsuo, Yu Nagahara, Takaya Oshita, Naomichi Saitou
  • Patent number: 12241907
    Abstract: A chip that does not require high-accuracy discharge amount control for a liquid delivery pump and can suppress entrainment of air bubbles, including: a first flow path; a second flow path; a merging portion provided on a downstream end portion side of the first flow path and merge the first fluid and the second fluid; a first connection flow path connecting the first flow path and the second flow path at the merging portion and have a liquid delivery resistance higher than the first flow path; a degassing flow path connecting to the second flow path on a downstream side of the first connection flow path; a third flow path provided on a downstream side of the merging portion; and a second connection flow path connecting the first flow path and the third flow path and have a liquid delivery resistance higher than the first flow path.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: March 4, 2025
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Kazuhiko Imamura, Tsutomu Nakamura, Nobuhiko Inui, Ryousuke Takahashi
  • Patent number: 12234485
    Abstract: Provided is a resin film having excellent cell extensibility in cell culture. The resin film formed of a scaffold material for cell culture containing a synthetic resin, the resin film having a compressive modulus of 5.5 GPa or more at a frequency of 1 Hz as measured using a nanoindenter device in ion-exchanged water in accordance with ISO14577-1 after being immersed in the ion-exchanged water at 37° C. for 24 hours.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: February 25, 2025
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Yuuhei Arai, Ryoma Ishii, Hiroki Iguchi, Satoshi Haneda
  • Publication number: 20250057776
    Abstract: An exosome comprising at least one exosome marker protein selected from among CD63, CD81 and CD9, and an integrin ? and/or an integrin ? in a lipid bilayer is disclosed. This exosome allows drug delivery with high target selectivity.
    Type: Application
    Filed: December 21, 2022
    Publication date: February 20, 2025
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventor: Zheli TAN
  • Publication number: 20250050296
    Abstract: Provided are a reactor that can operate stably without being subject to restrictions on heating temperature, a gas production apparatus (that is, an industrially advantageous gas production apparatus) having the reactor, a gas production system, and a gas production method. Each of reactors 4a and 4b includes a container 41 having a single internal space 410 through which gas is capable of passing and a reducing agent layer 42 with which the internal space 410 is filled and which is configured by a reducing agent 4R reducing carbon dioxide to carbon monoxide. When the container 41 is cut in a direction orthogonal to a passage direction of the gas, a proportion of a cross-sectional area of the reducing agent layer 42 to a cross-sectional area of the internal space 410 is equal to or greater than 60%.
    Type: Application
    Filed: July 11, 2022
    Publication date: February 13, 2025
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Yuki NAKAMA, Masaki NAKAMURA, Tsuoshi TONO
  • Publication number: 20250051722
    Abstract: Provided is a coating solution for forming a cell scaffold with which a cell scaffold having a large thickness can be easily formed and the proliferation of cells can be enhanced. A coating solution for forming a cell scaffold according to the present invention contains a peptide-conjugated resin having a synthetic resin moiety and a peptide moiety and an alcohol solvent, a content of the peptide-conjugated resin being 0.1 wt % or more.
    Type: Application
    Filed: December 26, 2022
    Publication date: February 13, 2025
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Daigo KOBAYASHI, Yuuhei ARAI
  • Publication number: 20250054895
    Abstract: The present invention aims to provide a curable resin composition that can planarize bonding surfaces and connect elements without leaving surface voids even when the elements have irregularities on the surface, thus imparting high bonding reliability between the elements, a cured film formed using the curable resin composition, a stack including the cured film, an imaging device including the stack, an semiconductor device including the stack, a method for producing the stack, and a method for producing an element including a bonding electrode for use in production of the stack. Provided is a curable resin composition containing: an organosilicon compound; and a solvent, the curable resin composition having a viscosity at 25° C.
    Type: Application
    Filed: December 22, 2022
    Publication date: February 13, 2025
    Applicant: Sekisui Chemical Co., Ltd.
    Inventors: Taro SHIOJIMA, Hayate NOMOTO, Kenichiro SATO, Hidenobu DEGUCHI, Tokushige SHICHIRI
  • Publication number: 20250051573
    Abstract: The present invention aims to provide a curable resin composition capable of forming a film which, even when made thick, is less likely to crack at high temperature under a nitrogen atmosphere, a cured film formed using the curable resin composition, a stack including the cured film, an imaging device including the stack, an semiconductor device including the stack, a method for producing the stack, and a method for producing an element including a bonding electrode for use in production of the stack. Provided is a curable resin composition containing: a polyimide; and a silsesquioxane, the polyimide being contained in an amount of 0.5 parts by weight or more and 50 parts by weight or less relative to 100 parts by weight of the silsesquioxane.
    Type: Application
    Filed: December 22, 2022
    Publication date: February 13, 2025
    Applicant: Sekisui Chemical Co., Ltd
    Inventors: Hayate NOMOTO, Taro SHIOJIMA, Tokushige SHICHIRI, Kenichiro SATO, Hidenobu DEGUCHI
  • Publication number: 20250051721
    Abstract: Provided is a scaffold material for cell culture with which the culture stability of cells can be maintained over an extended period of time. A scaffold material for cell culture according to the present invention contains a peptide-conjugated (meth)acrylic copolymer having a (meth)acrylic copolymer moiety and a peptide moiety bonded to the (meth)acrylic copolymer moiety, the following relaxation time (CS2) being 5 milliseconds or less. Relaxation time (CS2): a relaxation time of a CS component, which is a component having the lowest molecular mobility among three components, when the scaffold material for cell culture after being brought into contact with heavy water at 25° C. for 18 hours is measured by a CPMG method using pulsed NMR, and the obtained free induction decay curve of spin-spin relaxation of 1H is separated into three components.
    Type: Application
    Filed: December 26, 2022
    Publication date: February 13, 2025
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Yuuhei ARAI, Nami NAKAJIMA