公开(公告)号：US20180215906A1

公开(公告)日：2018-08-02

申请号：US15748340

申请日：2016-07-27

申请人： ZEON CORPORATION

发明人： Shinsuke SUGAWARA ,  Akito NAKAI

IPC分类号： C08L15/00 ,  C08L9/02 ,  C08F236/14 ,  C08K3/04 ,  C08K3/36 ,  C08K5/11 ,  C08K5/14

摘要： The present invention provides a nitrile group-containing highly saturated copolymer rubber comprising an α,β-ethylenically unsaturated nitrile monomer unit (a1) in a content of 10 to 40 wt %, an α,β-ethylenically unsaturated monocarboxylic acid ester monomer unit (a2) in a content of 10 to 60 wt %, and a conjugated diene monomer unit (a3) in a content of 20 to 70 wt %, and having an iodine value of 35 to 85.

公开(公告)号：US20180169629A1

公开(公告)日：2018-06-21

申请号：US15738379

申请日：2016-05-25

申请人： ZEON CORPORATION

发明人： Akito NAKAI ,  Kazunori FURUKAWA

IPC分类号： B01J23/96 ,  B01J23/44 ,  B01J38/48 ,  B01J20/10 ,  B01J20/22 ,  B01J20/28 ,  C08C19/02

CPC分类号： B01J23/96 ,  B01J20/10 ,  B01J20/22 ,  B01J20/28023 ,  B01J23/44 ,  B01J38/00 ,  B01J38/48 ,  C08C19/02 ,  C08F6/08

摘要： A method for recovering a catalyst, wherein a solution containing a reaction mixture obtained by performing a hydrogenation reaction in a presence of a catalyst containing a platinum group metal is brought into contact with a fiber membrane having a group containing an amino group or a thiol group on a surface, thereby recovering the platinum group metal included in the solution is provided.

公开(公告)号：US20180016360A1

公开(公告)日：2018-01-18

申请号：US15544239

申请日：2015-12-25

申请人： ZEON CORPORATION

发明人： Akito NAKAI ,  Shinsuke SUGAWARA

IPC分类号： C08C19/02 ,  C08F236/12

摘要： Method of production of highly saturated nitrile rubber, including: polymerization step of polymerizing monomer mixture containing at least α,β-ethylenically unsaturated nitrile monomer and diene monomer in medium to obtain dispersion or solution of nitrile rubber; coagulation step causing the nitrile rubber dispersion or solution to coagulate at 10-60° C. to obtain solid form nitrile rubber; hydrogenation reaction step causing solid form nitrile rubber to disperse or dissolve in medium to obtain the nitrile rubber dispersion or solution and performing hydrogenation reaction of the obtained nitrile rubber dispersion or solution to obtain dispersion or solution of highly saturated nitrile rubber, wherein the hydrogenation reaction, the content of compound having a mercapto group having 9-12 carbon atoms is 50 wt ppm or less and content of compound having a mercapto group having 13-16 carbon atoms is 1-120 wt ppm with respect to 100 wt % of the nitrile rubber content in the nitrile rubber dispersion or solution.

公开(公告)号：US20240279442A1

公开(公告)日：2024-08-22

申请号：US18566762

申请日：2022-06-16

申请人： ZEON CORPORATION

发明人： Akito NAKAI ,  Naoki TAKAHASHI

IPC分类号： C08L9/02 ,  C08F220/28 ,  C08F236/12 ,  C08K7/06 ,  C08L33/14 ,  H01M4/62

CPC分类号： C08L9/02 ,  C08F220/286 ,  C08F236/12 ,  C08K7/06 ,  C08L33/14 ,  H01M4/623 ,  C08K2201/001

摘要： Provided is a binder composition that is capable of producing a conductive material dispersion liquid having excellent dispersibility and that can cause an electrochemical device to display excellent cycle characteristics. The binder composition contains a first polymer, a second polymer, and an organic solvent. The first polymer includes a nitrile group-containing monomer unit and includes either or both of an aliphatic conjugated diene monomer unit and an alkylene structural unit. The second polymer includes a structural unit of the following formula (I) in a proportion of 70 mass % to 95 mass %. In formula (I), R1 represents a hydrogen atom or a methyl group, R2 represents a hydrogen atom, a phenyl group, an alkyl group having a carbon number of 1 to 6, or a phenyl group including one to three alkyl groups having a carbon number of 1 to 6, and n represents an integer of 3 or more.

公开(公告)号：US20240021823A1

公开(公告)日：2024-01-18

申请号：US18253037

申请日：2021-11-05

申请人： ZEON CORPORATION

发明人： Tsubasa MIYAMAE ,  Akito NAKAI

IPC分类号： H01M4/62 ,  H01M4/36 ,  H01M10/0525

CPC分类号： H01M4/622 ,  H01M4/625 ,  H01M4/364 ,  H01M10/0525 ,  H01M2004/028

摘要： A binder composition for a non-aqueous secondary battery positive electrode contains a polymer. The polymer includes a nitrile group-containing monomer unit and has a weight-average molecular weight of 300,000 or less and a sulfur content of 500 ppm or more.

公开(公告)号：US20230268513A1

公开(公告)日：2023-08-24

申请号：US18040149

申请日：2021-08-24

申请人： ZEON CORPORATION

发明人： Akito NAKAI ,  Naoki TAKAHASHI

IPC分类号： H01M4/62 ,  C08K5/02 ,  C08F236/12

CPC分类号： H01M4/622 ,  H01M4/625 ,  C08K5/02 ,  C08F236/12

摘要： Provided is a binder composition for an electrochemical device that has excellent viscosity stability and is capable of forming an electrode having excellent peel strength. The binder composition contains a polymer including a nitrile group-containing monomer unit, N-methyl-2-pyrrolidone, and a halogenated hydrocarbon. The content of the halogenated hydrocarbon is not less than 2 mass ppm and not more than 400 mass ppm relative to the content of the polymer.

公开(公告)号：US20240088391A1

公开(公告)日：2024-03-14

申请号：US18006148

申请日：2021-08-26

申请人： ZEON CORPORATION

发明人： Yukie ITO ,  Akito NAKAI

IPC分类号： H01M4/62 ,  C08F236/12 ,  H01G11/38 ,  H01G11/86

CPC分类号： H01M4/622 ,  C08F236/12 ,  H01G11/38 ,  H01G11/86 ,  H01M2004/021

摘要： A dispersant composition for an electrochemical device contains a polymer including a nitrile group-containing monomer unit and an alkylene structural unit. Upon measurement of the polymer contained in the composition by dynamic light scattering, a value (A) detected for volume-average particle diameter D50 is not less than 50 nm and not more than 800 nm, and one or more peaks are detected in a particle diameter range of not less than 5 μm and not more than 30 μm.

公开(公告)号：US20210179740A1

公开(公告)日：2021-06-17

申请号：US16758691

申请日：2018-11-02

申请人： ZEON CORPORATION

发明人： Akito NAKAI

IPC分类号： C08C19/02 ,  C08F8/04 ,  C08F6/22 ,  C08C1/15

摘要： A method produces a hydrogenated nitrile rubber having an iodine value of 120 or less, the method having a first coagulation step of adding a halogen atom-free metal salt as a coagulant to a nitrile rubber latex to form a nitrile rubber coagulum; a solution preparation step of dissolving the nitrile rubber coagulum in an organic solvent to prepare a nitrile rubber solution; a hydrogenation step of subjecting the nitrile rubber solution to a hydrogenation reaction to afford a hydrogenated nitrile rubber solution; and a second coagulation step of adding a divalent metal salt as a coagulant to the hydrogenated nitrile rubber solution to form a hydrogenated nitrile rubber coagulum.

公开(公告)号：US20190241681A1

公开(公告)日：2019-08-08

申请号：US16318647

申请日：2017-07-12

申请人： ZEON CORPORATION ,  SAGA UNIVERSITY

发明人： Akito NAKAI ,  Hidetaka KAWAKITA ,  Keisuke OHTO ,  Shintaro MORISADA

IPC分类号： C08C19/02 ,  B01J23/44 ,  C08F236/12

CPC分类号： C08C19/02 ,  B01J23/44 ,  C08F236/12

摘要： Provided is a method of separating a catalyst of a hydrogenated nitrile rubber, the method including: a water-soluble polymer addition step of adding an aqueous solution of a water-soluble polymer to a water-soluble organic solvent solution of the hydrogenated nitrile rubber obtained by hydrogenating a nitrile rubber in the presence of a platinum group element-containing catalyst; and a water-soluble polymer precipitating step of precipitating the water-soluble polymer while incorporating the platinum group element in the water-soluble polymer by stirring the water-soluble organic solvent solution of the hydrogenated nitrile rubber to which the aqueous solution of the water-soluble polymer is added.

公开(公告)号：US20240021826A1

公开(公告)日：2024-01-18

申请号：US18257099

申请日：2021-11-29

申请人： ZEON CORPORATION

发明人： Akito NAKAI ,  Kazuki ASAI

IPC分类号： H01M4/62 ,  H01M10/0525

CPC分类号： H01M4/622 ,  H01M10/0525 ,  H01M4/623 ,  H01M2004/028

摘要： Disclosed is a composition for an electrochemical device positive electrode. The composition enables metal capturing within a positive electrode mixed material layer and makes it possible to provide a positive electrode capable of improving the electrical characteristics of an electrochemical device. The composition comprises a copolymer A that comprises a sulfo group-containing monomer unit in an amount of 10% by mass or more and 40% by mass or less and a nitrile group-containing monomer unit in an amount of 10% by mass or more and 45% by mass or less.