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61. 发明授权

US11111319B2 Polyvinyl alcohol 有权
公开(公告)号：US11111319B2
公开(公告)日：2021-09-07
申请号：US16089441
申请日：2017-03-30
申请人： KURARAY CO., LTD.
发明人： Yusuke Amano , Takumi Takayama , Kazuhiko Maekawa
IPC分类号： C08F16/06 , C08F116/06
摘要： A polyvinyl alcohol has a number-average molecular weight (Mn) from 4,400 to 440,000, a molecular weight distribution (Mw/Mn) from 1.05 to 1.70, a degree of saponification from 80 to 99.99 mol %, and a carbon-carbon double bond content (X) of 0.1 mol % or less based on total monomer units, and satisfying a formula (1) below. A polyvinyl alcohol, having a narrow molecular weight distribution and a high number-average molecular weight with good hue, and a method for producing the same are thus provided. X·Mn≤1000 (1)

62. 发明授权

US11078309B2 Vinyl alcohol-based polymer having olefin in side chain 有权
公开(公告)号：US11078309B2
公开(公告)日：2021-08-03
申请号：US16619152
申请日：2018-06-05
申请人： KURARAY CO., LTD.
发明人： Yuki Tachibana , Yusuke Amano , Kazuhiko Maekawa
IPC分类号： C08F8/32 , C08F16/06
摘要： There is provided a vinyl alcohol-based polymer having an olefin in side chain, comprising 0.001 to 10 mol % of a structural unit represented by Formula (1) based on the total amount of structural units, wherein the total carbon number of X, R1, R2, R3 and R4 is 2 or more. The vinyl alcohol-based polymer having an olefin in side chain has excellent storage stability, good solubility in water or an organic solvent even after thermal treatment, and excellent reactivity to high energy beam. In Formula (1), X represents an optionally substituted divalent aliphatic hydrocarbon group, an optionally substituted divalent alicyclic hydrocarbon group, an optionally substituted divalent aromatic hydrocarbon group, or a group consisting of two or more of these groups which are linked via at least one bond selected from the group consisting of an amide bond, an ester bond, an ether bond, and a sulfide bond; R1, R2, R3 and R4, independently of each other, represents a hydrogen atom, an optionally substituted aliphatic hydrocarbon group, an optionally substituted alicyclic hydrocarbon group, or an optionally substituted aromatic hydrocarbon group; and X, R1, R2, R3 and R4 can be arbitrarily combined to form a ring structure).

63. 发明申请

US20210230314A1 Method for Producing Ethylene-Vinyl Acetate Copolymer 有权
公开(公告)号：US20210230314A1
公开(公告)日：2021-07-29
申请号：US17059566
申请日：2019-05-29
申请人： KURARAY CO., LTD.
发明人： Naoto Nishida , Kazuyuki Somemiya
IPC分类号： C08F2/06 , C08F218/08 , C08F210/02 , C08F2/01
摘要： A method of continuously producing an ethylene-vinyl acetate copolymer in a polymerization vessel containing a reaction liquid containing ethylene, vinyl acetate, a polymerization initiator and methanol, the polymerization vessel being connected via piping to a heat exchanger circulating a coolant, the method includes the steps of: supplying ethylene, the polymerization initiator and methanol to the polymerization vessel; introducing pressurized gas containing ethylene present in a gas phase portion of the polymerization vessel into the heat exchanger; supplying vinyl acetate cooled to between −50° C. and 23° C. to an upper portion of the heat exchanger; flowing vinyl acetate down in the heat exchanger while absorbing ethylene; letting vinyl acetate dissolving ethylene out of a bottom portion of the heat exchanger and adding to the reaction liquid in the polymerization vessel; and taking the reaction liquid out of the polymerization vessel. This provides a method of efficiently removing heat during polymerization of an ethylene-vinyl acetate copolymer.

64. 发明授权

US11052638B2 Metal-clad laminate and manufacturing method for same 有权
公开(公告)号：US11052638B2
公开(公告)日：2021-07-06
申请号：US16082087
申请日：2017-03-02
申请人： KURARAY CO., LTD.
发明人： Shinji Hiramatsu , Takahiro Nakashima , Tatsuya Sunamoto , Shigeaki Suzuki
IPC分类号： C09K19/38 , B32B15/08 , B32B15/20 , C23C14/20 , C23C14/28 , C23C28/02 , C25D3/38 , C25D5/56 , H05K1/03 , H05K3/46
摘要： A metal-clad laminate (1) includes a thermoplastic liquid crystal polymer film (2), a metal deposition layer (4) formed on one surface of the thermoplastic liquid crystal polymer film (2), and metal foil (6) laminated to the other surface of the thermoplastic liquid crystal polymer film (2).

65. 发明授权

US11034821B2 Rubber compositions 有权
公开(公告)号：US11034821B2
公开(公告)日：2021-06-15
申请号：US16329567
申请日：2017-09-01
申请人： KURARAY CO., LTD.
发明人： Hiromi Maeda , Daisuke Koda , Hiroshi Kanbara , Satomi Ohta
IPC分类号： B60C1/00 , C08L9/06 , C08C19/25 , C08K3/04 , C08K3/36 , C08L15/00 , C08L21/00 , C08L7/00 , C08K3/013
摘要： A rubber composition includes 100 parts by mass of a solid rubber (A), 0.1 to 50 parts by mass of a modified liquid diene rubber (B) having a functional group derived from a silane compound represented by the formula (1), and 20 to 200 parts by mass of a filler (C), the modified liquid diene rubber (B) satisfying (i) to (iii) below: (i) The weight average molecular weight (Mw) is 15,000 to 120,000. (ii) The vinyl content is not more than 70 mol %. (iii) The average number of functional groups per molecule of the modified liquid diene rubber (B) is 1 to 30.

66. 外观设计

USD918823S1 Adsorption-desorption material for vehicle canisters 有权
公开(公告)号：USD918823S1
公开(公告)日：2021-05-11
申请号：US29702303
申请日：2019-08-19
申请人： KURARAY CO., LTD.
设计人： Takaharu Yamamoto , Mitsunori Nishita , Mitsunori Hitomi , Takayuki Yamada

67. 外观设计

USD918822S1 Adsorption-desorption material for vehicle canisters 有权
公开(公告)号：USD918822S1
公开(公告)日：2021-05-11
申请号：US29702302
申请日：2019-08-19
申请人： KURARAY CO., LTD.
设计人： Takaharu Yamamoto , Mitsunori Nishita , Mitsunori Hitomi , Takayuki Yamada

68. 发明授权

US10995189B2 Resin composition and applications thereof 有权
公开(公告)号：US10995189B2
公开(公告)日：2021-05-04
申请号：US16332586
申请日：2017-09-13
申请人： KURARAY CO., LTD.
发明人： Edgard Chow , Kentaro Yoshida , Tatsuya Hasegawa
IPC分类号： C08K5/13 , C08K5/3435 , C08J5/18 , C08J3/22 , A01G13/02 , A01F25/13 , A01F25/14 , F16L9/12 , A01G9/14 , A01M13/00 , E02D17/20 , E02D31/00
摘要： A resin composition contains an ethylene-vinyl alcohol copolymer (A) in which an ethylene unit content is from 10 to 60 mol %, a hindered amine-based compound (B) having a 2,2,6,6-tetraalkylpiperidine ring structure and having an alkoxy group bonded to a nitrogen atom in the structure, and a hindered phenol-based compound (C) having an ester bond or an amide bond. The resin composition contains 0.1 to 5 parts by mass of the hindered amine-based compound (B) and 0.2 to 5 parts by mass of the hindered phenol-based compound (C) with respect to 100 parts by mass of the ethylene-vinyl alcohol copolymer (A), and a mass ratio (C)/(B) is from 0.2 to 3.6.

69. 发明申请

US20210122868A1 HYDROGENATED BLOCK COPOLYMER, RESIN COMPOSITION, PRESSURE-SENSITIVE ADHESIVE, ADHESIVE, MOLDED OBJECT, LIQUID-PACKAGING CONTAINER, MEDICAL TOOL, MEDICAL TUBE, CORNER MEMBER FOR WEATHER SEAL, AND WEATHER SEAL 有权
公开(公告)号：US20210122868A1
公开(公告)日：2021-04-29
申请号：US17089404
申请日：2020-11-04
申请人： KURARAY CO., LTD.
发明人： Shinya Oshita , Yusuke Nojima , Mikio Masuda
IPC分类号： C08F297/04 , C08L53/02 , C08L23/10 , B32B27/06 , B32B7/12 , C08C19/02 , C09J153/02 , B32B25/08 , B32B27/08 , B32B27/32 , B65D65/40 , C08L23/14 , C09J123/14
摘要： Provided are a hydrogenated block copolymer capable of giving a resin composition having good moldability and sufficient mechanical strength and excellent in flexibility, kink resistance and transparency and also excellent in pressure sensitive adhesiveness, adhesiveness and weather resistance, and a resin composition containing the hydrogenated block copolymer, as well as a pressure sensitive adhesive, an adhesive, a molded article, a liquid-packaging container, a medical tool, a medical tube, a corner member for weather seal, and a weather seal that are produced using these. Specifically, the hydrogenated block copolymer is a hydrogenated block copolymer prepared by hydrogenating a block copolymer that contains at least a polymer block (A) consisting mainly of a structural unit derived from an aromatic vinyl compound, and a polymer block (B) consisting mainly of a structural unit derived from isoprene, a structural unit derived from butadiene, or a structural unit derived from a mixture of isoprene and butadiene, wherein the content of the polymer block (A) is 1% by mass or more and less than 5% by mass relative to the total amount of the hydrogenated block copolymer, the total content of the 1,2-bond and the 3,4-bond of the polymer block (B) is 30 to 85 mol %, the hydrogenation rate of the polymer block (B) is 80 mol % or more, and the weight average molecular weight of the hydrogenated block copolymer is 150,000 to 800,000.

70. 发明授权

US10988606B2 Modified vinyl alcohol polymer powder having reduced methanol content and production method therefor, and water-soluble film and packaging material 有权
公开(公告)号：US10988606B2
公开(公告)日：2021-04-27
申请号：US16337224
申请日：2017-04-13
申请人： KURARAY CO., LTD.
发明人： Shinsuke Nii , Yosuke Kumaki , Junpei Horiguchi , Tadahito Fukuhara , Tatsuya Tanida
IPC分类号： C08L29/04 , C08F8/12 , C08F216/06 , C08F222/10 , C08K5/00 , C08F222/00 , C08F8/16
摘要： A modified vinyl alcohol polymer powder having a structural unit derived from a derivative of an ethylenically unsaturated dicarboxylic acid, and containing a reduced amount of methanol, and a trace amount of a component that does not dissolve in water. The present invention relates to a modified vinyl alcohol polymer powder containing a structural unit derived from a derivative (A) of an ethylenically unsaturated dicarboxylic acid in a content (X) of 0.05 mol % or more and 10 mol % or less, and having a degree of saponification of 80.0 mol % or more and 99.9 mol % or less, the modified vinyl alcohol polymer powder has a methanol content of 0.01 weight % or more and less than 3.0 weight %, the modified vinyl alcohol polymer powder contains 0.1 ppm or more and less than 2,000 ppm of a component that is insoluble in a 90° C., 5 weight % aqueous solution.

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