公开(公告)号：US20200247915A1

公开(公告)日：2020-08-06

申请号：US16636481

申请日：2018-08-06

申请人： KURARAY CO., LTD.

发明人： Tadahito FUKUHARA ,  Yusuke AMANO

IPC分类号： C08F2/20 ,  C08F2/18 ,  C08F2/44 ,  C08F8/12 ,  C08F2/38 ,  C08F214/06

摘要： The present invention provides a dispersion stabilizer for suspension polymerization that, when used for suspension polymerization of a vinyl compound, provides excellent polymerization stability, and can produce a vinyl polymer having a reduced number of coarse particles, and a reduced number of fisheyes when molded into a sheet form. The present invention also provides a method therewith. The present invention relates to a dispersion stabilizer for suspension polymerization of a vinyl compound, the dispersion stabilizer comprising a vinyl alcohol polymer (A) having a viscosity-average degree of polymerization of more than 400 and less than 1,000, a degree of saponification of more than 67 mol % and less than 78 mol %, 0.02 mol % to 1.0 mol % of a group having an ethylenic double bond in its side chain, and an absorbance (x) at 280 nm of more than 0.17 and less than 0.65 in an ultraviolet absorption spectrum of a 0.1 mass % aqueous solution.

公开(公告)号：US20200207957A1

公开(公告)日：2020-07-02

申请号：US16643179

申请日：2018-08-29

申请人： KURARAY CO., LTD.

发明人： Hiroshi KANBARA ,  Daisuke KODA ,  Yosuke UEHARA

IPC分类号： C08L9/06 ,  B60C1/00 ,  B60C11/00

摘要： The invention provides a high-grip tire rubber composition excellent in steering stability, rolling resistance performance and abrasion resistance, and a tire tread, a bead filler, a tire belt and a pneumatic tire which each partially include the composition. The high-grip tire rubber composition includes 100 parts by mass of a solid rubber (A), the solid rubber (A) including not less than 60 mass % of a styrene butadiene rubber with 20 mass % or more styrene content, 0.1 to 90 parts by mass of a modified liquid diene rubber (B) having a functional group derived from a silane compound with a specific structure, and 20 to 150 parts by mass of a filler (C), the modified liquid diene rubber (B) satisfying the following (i) and (ii): (i) the weight average molecular weight (Mw) is 15,000 to 120,000, and (ii) the vinyl content is not more than 70 mol %.

公开(公告)号：US20200180279A1

公开(公告)日：2020-06-11

申请号：US16342425

申请日：2017-10-17

申请人： KURARAY CO., LTD.

发明人： Edgard CHOW ,  Gene MEDLOCK ,  Wataru HIROSE

IPC分类号： B32B27/08 ,  B32B1/02 ,  B32B27/30 ,  B32B27/32 ,  B29C45/16 ,  B65D65/40

摘要： There is provided a co-injection-molded multilayer structure having a barrier layer and outer layers laminated on both sides of the barrier layer, wherein the barrier layer is made of a resin composition comprising an ethylene-vinyl alcohol copolymer (A) and an alkali metal salt (B) of a higher fatty acid having a melting point of 250° C. or lower; a content of the alkali metal salt (B) in the barrier layer is 50 to 1500 ppm in terms of metal atoms; and the outer layers are made of a resin composition comprising an unmodified polypropylene (E) and a maleic anhydride-modified polypropylene (F) having a lower melt viscosity than that of the unmodified polypropylene (E). Although it has no adhesive layers, the co-injection-molded multilayer structure exhibits excellent adhesiveness between the barrier layer made of an EVOH resin composition and the outer layer made of a polypropylene resin composition.

公开(公告)号：US10646859B2

公开(公告)日：2020-05-12

申请号：US16312715

申请日：2017-06-20

申请人： KURARAY CO., LTD.

发明人： Yusuke Takahata ,  Tsuyoshi Kajiyashiki ,  Tomoya Hosoki ,  Kimio Okada

IPC分类号： B01J31/22 ,  C07C67/03 ,  C07C69/602 ,  C07F15/02

摘要： Disclosed herein is method for producing an iron dinuclear complex having two iron atoms bonded to each other via one oxygen atom and a ligand structure containing a Schiff base, a method which can produce an ester compound in high yield by the transesterification of an alcohol compound with a carboxylate ester even in the case where the raw material alcohol has a tertiary hydroxyl group which is usually difficult to esterify by transesterification, and a method which can produce a wholly esterified compound by transesterification catalyzed by an iron complex.

公开(公告)号：US10604447B2

公开(公告)日：2020-03-31

申请号：US15539385

申请日：2015-12-24

申请人： Kuraray Co., LTD.

发明人： Akira Imagawa ,  Shinya Inada ,  Yoshihiro Iwasaki ,  Saburo Hada

IPC分类号： C04B16/06 ,  B28B11/16 ,  E04D1/16 ,  B28B1/52 ,  B28B5/02 ,  B28B3/12 ,  C04B14/06 ,  C04B18/02 ,  C04B28/04 ,  E04D1/04 ,  C04B111/00 ,  C04B111/40

摘要： A roof tile containing fibers which satisfy the following requirements (1) to (3): (1) to have an average fiber diameter of 50 μm or less; (2) to have an aspect ratio of 50 to 2000; and (3) to have three or less buckled portions per fiber.

公开(公告)号：US10597481B2

公开(公告)日：2020-03-24

申请号：US15548640

申请日：2016-02-05

申请人： KURARAY CO., LTD. ,  AMYRIS, INC.

发明人： Yosuke Uehara ,  Hiromitsu Sasaki ,  Daisuke Konishi ,  Masahiro Kato

IPC分类号： C08F297/04 ,  C08F8/04 ,  C08F236/10 ,  C08F236/22 ,  C08F236/06 ,  C08F236/08 ,  D04H1/4282 ,  D04H3/007 ,  D01F6/28 ,  B29C43/02 ,  C08J5/18 ,  B32B27/00 ,  C09J153/02 ,  C08L53/02 ,  C08L25/10 ,  C08L23/00 ,  B32B27/30

摘要： A hydrogenated block copolymer prepared by hydrogenating a block copolymer that contains a polymer block (A) containing a structural unit derived from an aromatic vinyl compound, a polymer block (B) containing a structural unit derived from farnesene, and a polymer block (C) containing a structural unit derived from a conjugated diene except farnesene, wherein the block copolymer contains at least two above polymer blocks (A), at least one above polymer block (B) and at least one above polymer block (C), and wherein at least one above polymer block (B) is at the terminal, and the hydrogenation rate of the carbon-carbon double bond in the polymer block (B) and the polymer block (C) is 50 mol % or more.

公开(公告)号：US20200071597A1

公开(公告)日：2020-03-05

申请号：US16554126

申请日：2019-08-28

申请人： KURARAY CO., LTD.

发明人： Ghebrehiwet GHEBREMESKEL ,  Masaki KATO ,  Levi NEUFELD ,  Brittany SPELL

IPC分类号： C09K8/487 ,  C08L29/04 ,  C08L31/04 ,  C08L3/02 ,  C08K3/013 ,  C08K3/22 ,  C08K3/16 ,  C08K3/26

摘要： Provided are particulate polyvinyl alcohol-based loss circulation control compositions for use in subterranean treatments, which are prepared by compacting a specified polyvinyl alcohol copolymer with an acid-soluble weighting agent, optionally with other specified additives and other polyvinyl alcohols.

公开(公告)号：US10573891B2

公开(公告)日：2020-02-25

申请号：US15409242

申请日：2017-01-18

申请人： KURARAY CO., LTD.

发明人： Makoto Imaji ,  Kenta Aoki ,  Yasuhiro Tada ,  Naohiro Sonobe ,  Junichi Arima ,  Kenichi Koyakumaru ,  Hideharu Iwasaki ,  Kiyoto Otsuka ,  Jiro Masuko ,  Hajime Komatsu ,  Shinya Tago

IPC分类号： H01M4/587 ,  C01B32/05 ,  H01M4/583 ,  H01M10/05 ,  H01M10/0525 ,  H01M4/02

摘要： The object of the present invention is to provide a carbonaceous material which is obtainable from plant-derived char and has a decreased specific surface area. Further, the object of the present invention is to provide a non-aqueous electrolyte secondary battery having excellent dedoping capacity, non-dedoping capacity, and charge-discharge efficiency. The object can be solved by a carbonaceous material for non-aqueous electrolyte secondary batteries characterized in that the carbonaceous material is obtained by heat-treating plant-derived char which is demineralized in gas-phase, and carbon precursor or volatile organic compound under a non-oxidizing gas atmosphere; and a specific surface area determined by a BET method is 10 m2/g or less.

公开(公告)号：US20200057176A1

公开(公告)日：2020-02-20

申请号：US16486058

申请日：2018-02-09

申请人： KURARAY CO., LTD.

发明人： Toshiaki SUGAWARA ,  Makoto AKAI ,  Dai KATAOKA

IPC分类号： G02B1/04 ,  C08F293/00 ,  C08K3/22 ,  C08K5/524 ,  C08K13/02

摘要： A resin composition is provided which has high transparency, light guiding properties and luminescent properties and can guide light therethrough with little change in chromaticity. A shaped article such as an optical element including the resin composition is also provided. The resin composition includes an acrylic block copolymer (A) and a light diffusing agent (B), wherein the acrylic block copolymer (A) has at least one structure in which polymer blocks (a1) based on methacrylic acid ester units are bonded to both ends of a polymer block (a2) based on acrylic acid ester units, and has a weight average molecular weight of 10,000 to 150,000 and a tensile elastic modulus of 1 to 1,500 MPa, the light diffusing agent (B) is rutile titanium oxide having an average particle size of 0.5 to 2.0 μm, and the content of the light diffusing agent (B) is 0.5 to 10 ppm (on mass basis) based on the acrylic block copolymer (A).

公开(公告)号：US20200055298A1

公开(公告)日：2020-02-20

申请号：US16661386

申请日：2019-10-23

申请人： KURARAY CO., LTD.

发明人： Takahiro NAKASHIMA ,  Takeshi Takahashi ,  Minoru Onodera

IPC分类号： B32B38/00 ,  H05K3/46 ,  H05K3/38 ,  H05K1/03 ,  B32B15/09 ,  B32B3/26 ,  B32B15/08 ,  B29C65/02

摘要： A method for manufacturing a multilayer circuit board containing a single-sided metal-clad laminate sheet and a substrate laminated together, the single-sided metal-clad laminate sheet containing a thermoplastic liquid crystal polymer film and a metal foil bonded to a surface of the thermoplastic liquid crystal polymer film, and the method containing: forming a laminate sheet having the thermoplastic liquid crystal polymer film and the metal foil bonded together; and heat treating the laminate sheet, wherein the heat treatment satisfies conditions (1) and (2) to manufacture the single-sided metal-clad laminate sheet: (1) a heat treatment temperature ranges between 1° C. inclusive and 50° C. exclusive higher than a melting point of the thermoplastic liquid crystal polymer film, and (2) a time for the heat treatment ranges from one second to 10 minutes.