公开(公告)号：US20230096613A1

公开(公告)日：2023-03-30

申请号：US17758639

申请日：2020-12-23

Applicant: KURARAY CO., LTD.

Inventor： Tomoki SAKAI ,  Takashi KATAYAMA ,  Hiroyuki KAWAI ,  Masashi NISHIDA ,  Tsugumi YOSHIDA

IPC: D06M11/83 ,  D02G3/04

Abstract: A metal-covered liquid crystal polyester multifilament, comprising: two or more metal-covered liquid crystal polyester monofilaments in which a surface of each liquid crystal polyester monofilament is covered with a metal having a thickness of 0.1 to 20 μm, wherein in a cross-sectional photograph measured by X-ray CT, a percentage of a number of stuck fibers in which the two or more metal-covered liquid crystal polyester monofilaments are stuck is 75% or less with respect to a total number of fibers.

公开(公告)号：US20210222036A1

公开(公告)日：2021-07-22

申请号：US17059103

申请日：2019-05-28

Applicant: KURARAY CO., LTD.

Inventor： Toru ASADA ,  Daisuke KODA ,  Shinichi TAKEMOTO ,  Hiroyuki KAWAI ,  Shuhei YORIMITSU

IPC: C09J109/00 ,  C08J5/06 ,  C08L9/00

Abstract: Reinforcing fibers containing hydrophilic fibers and an adhesive component, wherein at least a part of the surfaces of the hydrophilic fibers have the adhesive component, the adhesive component contains a modified conjugated diene rubber having a hydrogen-bonding functional group in a part of the conjugated diene rubber, and the number of the hydrogen-bonding functional groups in the modified conjugated diene rubber is 2 to 150 per molecule on average; a method for producing the reinforcing fibers; and a molded article using the reinforcing fibers.

公开(公告)号：US20180313037A1

公开(公告)日：2018-11-01

申请号：US15763486

申请日：2016-09-27

Applicant: KURARAY CO., LTD.

Inventor： Tomohiro HAYAKAWA ,  Toshimichi KUSUNOKI ,  Hiroyuki KAWAI ,  Hideo KIYOYAMA

IPC: D21H21/08 ,  C08L63/00 ,  C08L75/08 ,  B01F17/00 ,  D21H13/50 ,  D21H17/00 ,  D21H17/57 ,  D21H17/52

CPC classification number: D21H21/08 ,  B01F17/0028 ,  B01F17/005 ,  B01F17/0092 ,  C08G18/4833 ,  C08G18/4837 ,  C08G18/73 ,  C08L63/00 ,  C08L75/08 ,  D21H13/50 ,  D21H15/02 ,  D21H17/36 ,  D21H17/52 ,  D21H17/57 ,  D21H17/72 ,  C08L71/02

Abstract: Provided is a dispersant for carbon fibers which allows uniform dispersion of relatively long carbon fibers, e.g., carbon fibers with a length of 12.5 mm or more, particularly 10.0-100.0 mm, more particularly 12.5-50.0 mm in an aqueous medium.A dispersant for carbon fibers used by combining: (A) a random copolymer of phenylglycidyl ether and ethylene oxide, or a random copolymer of phenylglycidyl ether, ethylene oxide and propylene oxide; and (B) a polyether-based polyurethane resin based on a bifunctional polyol and hexamethylene diisocyanate, the bifunctional polyol being polyethylene glycol and/or an ethylene oxide-propylene oxide random copolymer.

公开(公告)号：US20150294801A1

公开(公告)日：2015-10-15

申请号：US14750063

申请日：2015-06-25

Applicant: KURARAY CO., LTD.

Inventor： Tomohiro HAYAKAWA ,  Hiroyuki KAWAI ,  Hideo HAYASHI

IPC: H01G11/52 ,  H01G11/04

CPC classification number: H01G11/52 ,  H01G11/04 ,  H01M2/162 ,  H01M2/1626 ,  Y02E60/13

Abstract: A separator for electric double layer capacitor comprising a fiber sheet containing 10% by mass (relative to 100% by mass of fiber sheet) of polyvinyl alcohol fibers (fibers A) having a hot water-dissolving temperature of lower than 100° C. and higher than 85° C., the separator having a density within a range of 0.25 to 0.7 g/cm3, and a thickness within a range of not less than 5 μm and less than 40 μm.

Abstract translation: 一种双电层电容器用隔膜，其包含热溶解温度低于100℃的聚乙烯醇纤维（纤维A）10质量％（相对于纤维片100质量％）的纤维片， 高于85℃，隔膜的密度在0.25〜0.7g / cm 3的范围内，厚度在5μm以上且小于40μm的范围内。

公开(公告)号：US20150079479A1

公开(公告)日：2015-03-19

申请号：US14553563

申请日：2014-11-25

Applicant: KURARAY CO., LTD

Inventor： Tomohiro HAYAKAWA ,  Hiroyuki KAWAI ,  Hideo HAYASHI ,  Koichi KAMBE

IPC: H01M2/16

CPC classification number: H01M2/1626 ,  B29K2029/04 ,  B29K2229/04 ,  H01M2/145 ,  H01M2/162 ,  H01M2/1633 ,  H01M2/18

Abstract: Provided are a separator for a nonaqueous cell that has air permeability and is small in thickness while maintaining strength properties; and a nonaqueous cell having this separator. The separator includes a fiber sheet in which a polyvinyl alcohol fiber is incorporated in a proportion of 30% or more by mass (based on the fiber sheet). The fiber has a fiber breaking temperature in heated water of lower than 100° C. and higher than 85° C.

Abstract translation: 本发明提供一种具有透气性，同时保持强度特性的厚度小的非水电池用隔膜; 和具有该隔板的非水电解槽。 隔膜包括纤维片，其中聚乙烯醇纤维以30质量％以上的比例（基于纤维片）加入。 纤维在热水中的纤维断裂温度低于100℃，高于85℃。

公开(公告)号：US20220306822A1

公开(公告)日：2022-09-29

申请号：US17780087

申请日：2020-11-10

Applicant: KURARAY CO., LTD.

Inventor： Eiichi ISHIDA ,  Daisuke KODA ,  Toru ASADA ,  Shinichi TAKEMOTO ,  Shuhei YORIMITSU ,  Hiroyuki KAWAI

IPC: C08J5/24 ,  C08L23/16 ,  C08L7/00 ,  D06M15/356

Abstract: To provide surface-modified fibers and reinforcing fibers that are capable of enhancing the adhesiveness to rubber, without the use of resorcinol and formaldehyde, and a molded article using the same. Surface-modified fibers include fibers, and a surface-modifying layer covering at least a part of a surface of the fibers, and have a solid surface zeta potential on a surface of the surface-modifying layer of −20.0 to 30.0 mV.

公开(公告)号：US20220069417A1

公开(公告)日：2022-03-03

申请号：US17418542

申请日：2019-12-13

Applicant: KURARAY CO., LTD.

Inventor： Tomohiro HAYAKAWA ,  Haruna MITSUMORI ,  Toshimichi KUSUNOKI ,  Hiroyuki KAWAI

IPC: H01M50/446 ,  H01M50/406 ,  H01M50/414 ,  H01M50/44

Abstract: An alkaline battery separator containing an alkali resistant fiber and a binder, wherein the alkaline battery separator has two surfaces which are a surface A that is smoother comparing with the other surface and has an arithmetic mean surface roughness Ra (A), and a surface B that is rougher and has an arithmetic mean surface roughness Ra (B), the amount of the binder is 5 to 20% by mass based on the total mass of the separator, a value obtained by dividing the arithmetic mean surface roughness Ra (A) by the arithmetic mean surface roughness Ra (B) [Ra (A)/Ra (B)] is 0.700 or more and 0.980 or less, and the arithmetic mean surface roughness Ra (B) of the surface B is 3.0 μm or more and 10 μm or less.

公开(公告)号：US20210111463A1

公开(公告)日：2021-04-15

申请号：US16772886

申请日：2018-12-25

Applicant: KURARAY CO., LTD.

Inventor： Tomoki SAKAI ,  Hiroyuki KAWAI ,  Tomohiro HAYAKAWA ,  Toshimichi KUSUNOKI

IPC: H01M50/429 ,  H01M50/44 ,  H01M50/449 ,  H01M6/06 ,  H01G11/52 ,  H01G9/02

Abstract: To provide a separator which has a combination of a preferable air permeability enabling high prevention of internal short circuit and a high retention rate of such an air permeability in an electrolytic solution, and has more improved uniformity of the air permeability.
A separator comprising a porous sheet and cellulose nanofibers, wherein the porous sheet comprises a binder component having the SP value of 11 to 16 (cal/cm3)1/2, and the porous sheet has the cellulose nanofibers at the inside and on the surface thereof, and wherein the cellulose nanofibers are combined with the porous sheet by fusion of the binder component.

公开(公告)号：US20180179669A1

公开(公告)日：2018-06-28

申请号：US15739372

申请日：2016-06-22

Applicant: KURARAY CO., LTD

Inventor： Masami KAWAKAMI ,  Toshiaki KOBAYASHI ,  Hiroyuki KAWAI ,  Shinichi TAKEMOTO ,  Tomohiro HAYAKAWA

IPC: D01F6/50 ,  D01D5/06 ,  D02J1/22 ,  D01F11/06 ,  C08L29/04

CPC classification number: D01F6/50 ,  C08L29/04 ,  C08L2203/12 ,  D01D5/06 ,  D01F1/10 ,  D01F6/14 ,  D01F11/06 ,  D02J1/222 ,  D02J1/223 ,  D02J1/224 ,  D10B2321/06 ,  D10B2331/06 ,  D10B2401/021

Abstract: A polyvinyl alcohol fiber that can easily be fibrillated at a low manufacture cost is provided. The readily fibrillative polyvinyl alcohol fiber contains a polyalkylene oxide in addition to a polyvinyl alcohol. A mass ratio of the polyalkylene oxide ranges from 3 to 40% relative to the total mass of the polyvinyl alcohol and the polyalkylene oxide. A method for manufacturing the polyvinyl alcohol fiber is also provided.

公开(公告)号：US20170005311A1

公开(公告)日：2017-01-05

申请号：US15267604

申请日：2016-09-16

Applicant: Kuraray Co., Ltd.

Inventor： Tomohiro HAYAKAWA ,  Hiroyuki KAWAI

IPC: H01M2/16 ,  H01M6/04

Abstract: Provided are an alkaline battery separator suitably used for an alkaline battery, and an alkaline battery using the separator. The separator includes a nonwoven fabric including subject fibers; at least a part of the subject fibers containing a chelate forming fiber having a chelate formable functional group being capable of forming a chelate with a metal ion. The alkaline battery includes a positive electrode, a negative electrode, the above-described separator placed therebetween, and an electrolyte.

Abstract translation: 提供了适用于碱性电池的碱性电池隔板和使用隔膜的碱性电池。 分离机包括：包含主体纤维的无纺布; 主要纤维的至少一部分含有螯合形成纤维，其具有螯合形成性官能团，能够与金属离子形成螯合物。 碱性电池包括正电极，负电极，其间放置有上述隔膜和电解质。