Patents Assigned to Kaneka Corporation
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Patent number: 11898016Abstract: A masterbatch (C) containing thermally expandable microcapsules (A) and a carrier resin composition (B) is provided. The carrier resin composition (B) contains a carrier resin (B1) and a plasticizer (B2), the carrier resin (B1) being an acrylic resin having a weight average molecular weight of 8,000 or more and 350,000 or less, and the plasticizer (B2) being an acrylic plasticizer having a weight average molecular weight of 1,000 or more and 20,000 or less. The carrier resin composition (B) is substantially compatible with a polycarbonate resin and has a shear viscosity of 1.0 Pa·s or more and 1.5×106 Pa·s or less at 80° C. The occurrence of whitening is suppressed and a good appearance can be obtained in an injection molded foam made with the masterbatch. A polycarbonate resin composition, an injection molded foam, and a method for producing an injection molded foam are provided.Type: GrantFiled: October 23, 2020Date of Patent: February 13, 2024Assignee: KANEKA CORPORATIONInventors: Soichi Uchida, Kazunori Saegusa, Mitsutaka Sato
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Publication number: 20240033382Abstract: A means of reducing bioburden in cyclic lipopeptide compound products by a simple operation without impairing their quality or function is provided. A method for reducing bioburden of a cyclic lipopeptide compound is characterized by irradiating a cyclic lipopeptide compound with a radiation beam. A method for producing a cyclic lipopeptide compound with reduced bioburden includes irradiating a cyclic lipopeptide compound with a radiation beam.Type: ApplicationFiled: October 6, 2023Publication date: February 1, 2024Applicant: KANEKA CORPORATIONInventor: Noriyuki Kizaki
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Publication number: 20240035000Abstract: This invention is intended to suppress cell death occurring at the time of transition of adherent culture of pluripotent stem cells to suspension culture thereof. Pluripotent stem cells are subjected to adherent culture in a liquid medium comprising a PKC? inhibitor and a TNKS inhibitor and then to suspension culture.Type: ApplicationFiled: December 7, 2021Publication date: February 1, 2024Applicants: KANEKA CORPORATION, RIKENInventors: Sho KAMBAYASHI, Yohei HAYASHI, Mami TAKASAKI
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Publication number: 20240034998Abstract: An object of the present invention is to easily obtain a large number of cardiomyocyte spheroids from cardiomyocytes separated into single cells. The present invention provides a method of producing a cardiomyocyte spheroid, the method comprising a step of culturing cardiomyocytes separated into single cells while stirring liquid in a container in which the cardiomyocytes are suspended, thereby causing aggregation of the cells.Type: ApplicationFiled: September 29, 2023Publication date: February 1, 2024Applicant: KANEKA CORPORATIONInventors: Terasu KAWASHIMA, Yoshikazu KAWAI, Sho KAMBAYASHI
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Patent number: 11883617Abstract: A balloon catheter may include a shaft having a distal side and a proximal side and a balloon provided at the distal side of the shaft. The balloon may have a plurality of wings in a deflated state, with each of the wings having a projection on an outer surface in a wrapped state, and each of the projections having a projecting direction, which is opposite to a wrapping direction of the wing. In a cross section that is perpendicular to a long axis direction of the balloon, a base of the projection may have a base first end part farther from a tip of the wing and a base second end part closer to the tip of the wing, and a tip of the projection may be closer to a base of the wing with respect to a line passing through the base first end part which is perpendicular to a line passing through the base first end part and the base second end part.Type: GrantFiled: November 19, 2018Date of Patent: January 30, 2024Assignee: KANEKA CORPORATIONInventors: Yojiro Koga, Noriko Wadahama
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Patent number: 11889623Abstract: A metal-clad laminate and techniques using the metal-clad laminate are provided where the metal-clad laminate has excellent adhesiveness between a substrate and metal foil in addition to good dielectric characteristics and heat resistance. The metal-clad laminate includes an insulating layer in contact with metal foil where the insulating layer further includes a resin composition and a fibrous base material. The resin composition contains a specific resin (A) and specific core-shell polymer particles (B), and a surface of the metal foil has a ten-point average roughness (Rz) of not more than 2.0 ?m.Type: GrantFiled: January 29, 2021Date of Patent: January 30, 2024Assignee: KANEKA CORPORATIONInventor: Shusuke Yoshihara
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Patent number: 11885043Abstract: An acrylic fiber for artificial hair may include an acrylic copolymer. The acrylic fiber has a fiber cross section including 2 to 4 T-shaped protrusions that extend radially from a central portion. Each of the T-shaped protrusions has an arc-shaped upper side that bulges in a direction away from the central portion. A circumradius of the fiber cross section is 40.0 to 60.0 ?m. A distance between adjacent end portions of the corresponding upper sides of the adjacent T-shaped protrusions is 3.0 to 60.0 ?m. An axial width is 10.0 ?m or more. Torsional rigidity of the acrylic fiber is 0.30 to 2.0 mg·cm2. The acrylic fiber for artificial hair has high volume, good texture, and good twist processability, and a hair ornament may include the acrylic fiber for artificial hair.Type: GrantFiled: February 9, 2021Date of Patent: January 30, 2024Assignee: KANEKA CORPORATIONInventors: Megumi Yoshikawa, Takao Michinobu, Takeshi Tanaka
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Publication number: 20240026107Abstract: Polypropylene-based resin extruded expanded particles have a low open cell ratio and are inexpensively obtainable. The polypropylene-based resin extruded expanded particles are obtained by extrusion expansion of a resin composition that contains a polypropylene-based resin (A) which has a branched structure and a polypropylene-based resin (B) in which a branched structure is not introduced. Furthermore, the polypropylene-based resin (B) has a weight average molecular weight of not less than 500,000 and a flexural modulus of not less than 950 MPa.Type: ApplicationFiled: September 28, 2023Publication date: January 25, 2024Applicants: KANEKA CORPORATION, KANEKA CORPORATIONInventors: Shunsuke Otani, Takayuki Goda
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Publication number: 20240023802Abstract: An object of the present invention is to provide a bronchoscope facilitating observation of a peripheral bronchus, and a method of using the same. The bronchoscope includes: a sheath having a longitudinal axis direction, the sheath having a first lumen and a second lumen each extending in the longitudinal axis direction; an endoscopic camera disposed in the first lumen; and a balloon catheter including a shaft inserted to the second lumen to be shiftable in the longitudinal axis direction and a balloon provided at a distal portion of the shaft, wherein the balloon has a pressurization lumen to be provided with fluid to receive positive pressure, and the second lumen is configured to receive negative pressure to cause a distal end of the sheath to stick to an inner wall of a bronchus.Type: ApplicationFiled: September 25, 2020Publication date: January 25, 2024Applicant: KANEKA CORPORATIONInventors: Kotaro MIYAKE, Shintaro OSUMI, Keisuke MATSUSHITA
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Publication number: 20240026205Abstract: The present invention is directed to a drilling fluid containing water, biodegradable fibers, and a thickener. The thickener contains a water-absorbing silicate, and the biodegradable fibers have a fiber length of 5.0 to 50 mm.Type: ApplicationFiled: December 3, 2021Publication date: January 25, 2024Applicants: AKITA UNIVERSITY, KANEKA CORPORATIONInventors: Shigemi NAGANAWA, Ryutaro MUKAI
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Publication number: 20240023803Abstract: An object of the present invention is to provide a medical instrument set facilitating safe observation of a peripheral bronchus portion, and a method of using the same. The medical instrument set includes a bronchoscope including a sheath having a longitudinal axis direction, the sheath having a first lumen and a second lumen each extending in the longitudinal axis direction, an endoscopic camera disposed in the first lumen, and a balloon catheter including a shaft inserted to the second lumen to be shiftable in the longitudinal axis direction and a balloon provided at a distal portion of the shaft; and a probe having a distal end positioned distally beyond a distal end of the balloon, the probe configured to detect a peripheral bronchus portion.Type: ApplicationFiled: September 25, 2020Publication date: January 25, 2024Applicant: KANEKA CORPORATIONInventors: Kotaro MIYAKE, Shintaro OSUMI, Keisuke MATSUSHITA
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Publication number: 20240026092Abstract: A method for producing purified fine polymer particles (A), includes an organic solvent mixing step of mixing an organic solvent (B) and a latex that contains fine polymer particles (A) and an emulsifying agent having a polyethylene group to obtain a mixture, and a mixed state maintaining step of allowing the mixture to stand and/or stirring the mixture. The method can efficiently purify fine polymer particles from a latex and has reduced environmental impact.Type: ApplicationFiled: September 29, 2023Publication date: January 25, 2024Applicant: KANEKA CORPORATIONInventor: Nobuyoshi Maizuru
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Publication number: 20240026572Abstract: A fluffy and voluminous artificial hair and a method for producing the same are provided. Artificial hair including a fiber cord with one or more fiber bundles braided or spirally wound has a configuration in which the fiber bundle is a bundle of a plurality of fibers including a first fiber and a second fiber. A cross section orthogonal to a longitudinal direction of the fiber bundle has a core and a shell enclosing the core. The core has a blend of the first fiber and the second fiber. The shell consists of the second fiber. A total area of voids in the shell on the cross section is larger than a total area of voids in the core on the cross section.Type: ApplicationFiled: September 28, 2023Publication date: January 25, 2024Applicant: KANEKA CORPORATIONInventor: Yu Nakamura
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Publication number: 20240018562Abstract: A cyclic lipopeptide-producing microbial strain improve productivity of a cyclic lipopeptide, such as surfactin, via microbial culture. The cyclic lipopeptide-producing microbial strain, lack at least one of a gene encoding betaine aldehyde dehydrogenase (EC:1.2.1.8) or a gene encoding choline dehydrogenase (EC:1.1.1.1), and a method for producing a cyclic lipopeptide comprising culturing such microbial strain are provided.Type: ApplicationFiled: August 21, 2023Publication date: January 18, 2024Applicant: KANEKA CORPORATIONInventors: Rina Aoki, Shingo Kobayashi, Naoaki Taoka
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Publication number: 20240021742Abstract: A solar cell for achieving an increase in performance. The solar cell is a back junction solar cell comprising a semiconductor substrate, first semiconductor layers stacked in a first region which is a part of the back side of the semiconductor substrate, and second semiconductor layers stacked in a second region which is another part of the back side of the semiconductor substrate. In the second region, the first semiconductor layers are present in some parts between the semiconductor substrate and the second semiconductor layers, wherein the first semiconductor layers comprise sea shapes in a sea-island structure.Type: ApplicationFiled: September 29, 2023Publication date: January 18, 2024Applicant: KANEKA CORPORATIONInventors: Katsunori KONISHI, Daisuke ADACHI
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Publication number: 20240018358Abstract: A polysiloxane-based resin that can be stably dispersed or dissolved in an aqueous medium and that has an appropriate level of viscosity, when made into a solution, is provided. The polysiloxane-based resin contains a polymer containing, as a structural unit, a structural unit derived from a monomer having a radically polymerizable group. The monomer includes (i) a monomer that is soluble in water and forms no micelles in water and (ii) a monomer that is capable of forming micelles in water.Type: ApplicationFiled: September 20, 2023Publication date: January 18, 2024Applicant: KANEKA CORPORATIONInventor: Hiroyuki Yokoi
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Publication number: 20240018287Abstract: A (meth)acrylic ester copolymer (A) has a reactive silicon group represented by the following formula (1): —SiR1cX3-c (1), wherein R1 is a substituted or unsubstituted hydrocarbon group having 1 to 20 carbon atoms, X is a hydroxy group or a hydrolyzable group, and c is 0 or 1. A monomer component of the (meth)acrylic ester copolymer (A) includes a (meth)acrylic ester (a1), a polyoxyalkylene polymer (a2) having more than one (meth)acryloyl groups per molecule, and a chain transfer agent (a3) having a mercapto group. The molar ratio of the polyoxyalkylene polymer (a2) to the chain transfer agent (a3) is 0.06 or more. The monomer component further includes a monomer (a4) having a reactive silicon group and a polymerizable unsaturated group, and/or the chain transfer agent (a3) further has a reactive silicon group.Type: ApplicationFiled: September 26, 2023Publication date: January 18, 2024Applicant: KANEKA CORPORATIONInventor: Kiyoshi Miyafuji
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Publication number: 20240010789Abstract: It is an object to provide P3HA in which impurities (in particular, residual protein) are reduced, at a high yield, from microbial cells containing P3HA. The above object is attained by a method for producing P3HA having a weight average molecular weight of 100,000 to 700,000, the method including: (a) a step of adjusting the pH of a culture solution including microbial cells containing P3HA to 8.0 to 12.0; (b) a step of adding an enzyme to the culture solution to perform an enzyme treatment; and (c) a step of adjusting the pH of the culture solution to 10.0 to 12.0.Type: ApplicationFiled: October 6, 2021Publication date: January 11, 2024Applicant: KANEKA CORPORATIONInventors: Shogo HIROTA, Tomoya NISHINAKA
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Publication number: 20240014451Abstract: A positive electrode composite active material, a lithium ion secondary battery, a method for producing a positive electrode composite active material, a method for producing a lithium ion secondary battery, and a composite active material is provided. The positive electrode composite active material includes a positive electrode active material and an oxide-based solid electrolyte. The positive electrode active material is coated with the oxide-based solid electrolyte. The oxide-based solid electrolyte is represented by Li1+p+q+rAlpGaq(Ti,Ge)2?p?qSirP3?rO12 (0<p?1, 0?q<1, 0?r?1). The oxide-based solid electrolyte is layered and has a coating thickness of 5 nm or more and 50 nm or less. In the oxide-based solid electrolyte, an amorphous portion and a crystalline portion are mixed, and the amorphous portion is in contact with the positive electrode active material.Type: ApplicationFiled: September 10, 2021Publication date: January 11, 2024Applicant: KANEKA CORPORATIONInventors: Mitsuyasu Imazaki, Junichi Imaizumi, Takashi Kikuchi, Masashi Tokizane
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Publication number: 20240010974Abstract: An object of the present invention is to provide a method of producing a cell population comprising mesenchymal stem cells, comprising efficiently isolating a cell population comprising mesenchymal stem cells at high purity from an amnion. Provided is a method of producing a cell population comprising amnion-derived mesenchymal stem cells, comprising (1) storing an amnion in a medium for 4 hours or longer at ?1° C. or higher and 25° C. or lower, followed by (2) isolating the amnion from the medium and treating the amnion with an enzyme; and (3) culturing a cell fraction comprising mesenchymal stem cells after the treatment with the enzyme.Type: ApplicationFiled: September 25, 2023Publication date: January 11, 2024Applicant: KANEKA CORPORATIONInventors: Chiho KOBAYASHI, Nobuhiko SATO, Rio MASAYASU