METHOD FOR PRODUCING EPSILON-CAPROLACTAM

    公开(公告)号:US20220411379A1

    公开(公告)日:2022-12-29

    申请号:US17777739

    申请日:2020-11-18

    IPC分类号: C07D223/10

    摘要: The present invention relates to a method of producing ε-caprolactam, the method including the following steps (A) and (B): (A) a step of reacting 5-cyanovaleramide with hydrogen in an aqueous solvent in a presence of a hydrogenation catalyst to obtain a 5-cyanovaleramide hydrogenation reaction mixture; (B) a step of heating the 5-cyanovaleramide hydrogenation reaction mixture at a temperature of 180° C. or higher and 300° C. or lower in an aqueous solvent to obtain ε-caprolactam.

    FIBER-REINFORCED COMPOSITE MATERIAL AND SANDWICH STRUCTURE

    公开(公告)号:US20220410502A1

    公开(公告)日:2022-12-29

    申请号:US17778073

    申请日:2020-11-16

    IPC分类号: B29C70/14 B29C53/24 B29C70/40

    摘要: An object of the present invention is to obtain a fiber-reinforced composite material achieving both lightweight properties and mechanical properties at a high level. The present invention is a fiber-reinforced composite material including: a resin (A); and a reinforcing fiber (B), and including: a fiber-reinforced structure portion including an in-plane orientation portion having an average fiber orientation angle of the reinforcing fiber (B) of 0° or more and 45° or less and an out-of-plane orientation portion having an average fiber orientation angle of the reinforcing fiber (B) of more than 45° and 90° or less; and a cavity portion defined by the in-plane orientation portion and the out-of-plane orientation portion of the fiber-reinforced structure portion.

    SIZING-AGENT-COATED CARBON FIBER BUNDLE AND METHOD FOR MANUFACTURING SAME

    公开(公告)号:US20220403587A1

    公开(公告)日:2022-12-22

    申请号:US17775630

    申请日:2021-01-19

    摘要: [Problem] To provide a sizing-agent-coated carbon fiber bundle in which, even when the sizing-agent-coated carbon fiber bundle has superior handling properties, the sizing agent on the sizing-agent-coated carbon fiber bundle exhibits excellent solubility in water and the adhesion amount of remaining sizing agent is reduced. [Solution] A sizing-agent-coated carbon fiber bundle obtained by applying polyethylene glycol and/or a surfactant to a carbon fiber bundle as a sizing agent, wherein all of the following conditions (i)-(iii) are satisfied. (i) The adhesion amount of the sizing agent is 0.15-0.80 parts by mass (inclusive) per 100 mass parts of the sizing-agent-coated carbon fiber bundle 100. (ii) The dry F-F friction coefficient is 0.39 or less. (iii) The adhesion amount of the sizing agent after washing for 50 seconds under the conditions disclosed in the specification is 0.12 parts by mass or less per 100 parts by mass of the sizing-agent-coated carbon fiber bundle 100.

    WOVEN FABRIC FOR SWIMWEAR AND SWIMWEAR USING SAME

    公开(公告)号:US20220403566A1

    公开(公告)日:2022-12-22

    申请号:US17776305

    申请日:2020-11-19

    摘要: There is provided swimwear which satisfies the stretchability, strength, ease of movement, and the like desired for swimwear, has superior water repellency, and reduces friction resistance between a surface of the swimwear and water. The woven fabric for swimwear according to the present invention has a weave structure in which covering coated threads are arranged in at least a part of a warp or weft yarn, the covering coated threads each including an elastic fiber as a core yarn and a synthetic fiber filament as a sheath yarn, where, in a woven fabric structure, one of the warp yarn and the weft yarn has a larger number of float yarns. A direction with a large number of float yarns is defined as a body length (height) direction of the swimwear, a ratio of resistance yarn in a direction perpendicular to the body length (height) direction is 40% or less. The woven fabric is suitably used for swimwear.

    POLYPHENYLENE SULFIDE RESIN COMPOSITON FOR AUTOMOTIVE COOLING PARTS, AND AUTOMOTIVE COOLING PARTS

    公开(公告)号:US20220403111A1

    公开(公告)日:2022-12-22

    申请号:US17776029

    申请日:2020-11-18

    摘要: A polyphenylene sulfide resin composition for automotive cooling parts contains, with respect to 100 parts by weight of a polyphenylene sulfide resin (A): 30 to 110 parts by weight of glass fibers (B); and 0.1 to 3 parts by weight of a silane compound (C) having a functional group selected from an amino group and an isocyanate group. In this polyphenylene sulfide resin composition, the PPS resin (A) has a number-average molecular weight of 7,000 to 14,000, and gives a residue amount of 0.05 to 1.0% by weight when dissolved in 20-fold amount by weight of 1-chloronaphthalene at 250° C. for 5 minutes and subsequently subjected to heat pressure filtration through a PTFE membrane filter having a pore size of 1 μm.

    COMPOSITE PREPREG AND FIBER-REINFORCED PLASTIC MOLDED BODY

    公开(公告)号:US20220402258A1

    公开(公告)日:2022-12-22

    申请号:US17779713

    申请日:2020-11-12

    IPC分类号: B32B37/06 B32B27/08 B32B7/022

    摘要: A composite prepreg and a fiber-reinforced plastic molded body are described that are excellent in secondary weldability with another member and exhibit excellent handleability and reinforcing characteristics, where the composite prepreg in which reinforcing fibers are impregnated with a thermoplastic resin and a thermosetting resin, and a thermoplastic resin layer and a thermosetting resin layer that form an interface and joined to each other are formed, wherein the thermoplastic resin layer is present on at least one surface of the composite prepreg, and the thermoplastic resin layer contains continuous reinforcing fibers.

    Encoscope-cleaning device
    109.
    发明授权

    公开(公告)号:US11529045B2

    公开(公告)日:2022-12-20

    申请号:US16484521

    申请日:2018-02-09

    IPC分类号: A46B9/06 A61B1/12 A61L2/16

    摘要: An endoscope-cleaning device ensures effective cleaning of an endoscope. The endoscope-cleaning device includes a long flexible core member inserted into a twisted tubular body including a weft yarn including a microfiber yarn, wherein the microfiber yarn is made of polyester and the tubular body is twisted at 5 twists/5 cm to 15 twists/5 cm.

    FLOW CHANNEL SWITCHING SYSTEM AND WATER CLEANING SYSTEM

    公开(公告)号:US20220396501A1

    公开(公告)日:2022-12-15

    申请号:US17775033

    申请日:2020-11-04

    IPC分类号: C02F1/00

    摘要: A flow channel switching system (1, 1′) including: a first on-off valve (10) which is disposed between a merging portion (6) and a branching portion (5) and in a raw water path (4); a second on-off valve (11) which is disposed in an outward path for raw water (7); and a sensor (13) that measures a state of water flowing through the raw water path, in which control is performed so as to open the second on-off valve and close the first on-off valve if a signal indicating that water is flowing in the raw water path is received from the sensor, then a signal indicating that no water is flowing in the raw water path is received, and then, within a predetermined time period, a signal indicating that water is flowing again in the raw water path is received.