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公开(公告)号：EP2196479B9
公开(公告)日：2012-05-09
申请号：EP08837924.3
申请日：2008-09-12
申请人： Kureha Corporation
CPC分类号： C08F2/18 , C08F14/22 , H01M4/621 , H01M4/623 , H01M10/052 , Y02P20/544
摘要： Disclosed are: a powder of a vinylidene fluoride polymer having a high molecular weight, which is excellent in the solubility in an organic solvent and is useful as an electrode binder for a non-aqueous battery; an NMP solution; and a method for producing an electrode mix. Specifically disclosed is a vinylidene fluoride polymer powder which is produced by using a vinylidene fluoride polymer that is produced by the supercritical suspension polymerization in an aqueous dispersion medium, in which the volume of pores each having a pore diameter of 0.03 to 1.0 μm inclusive makes up 77 to 93 vol% inclusive of the total pore volume as measured on a mercury porosimeter, and which has an inherent viscosity of 2.0 dl/g or more.
摘要翻译： 公开了具有高分子量的偏二氟乙烯聚合物粉末，其在有机溶剂中的溶解性优异并且可用作非水电池的电极粘合剂; 一个NMP解决方案; 以及用于制造电极混合物的方法。 本发明的偏氟乙烯系聚合物粉末，是使用通过超临界悬浮聚合而制造的偏氟乙烯系聚合物在水系分散介质中制造而成的，其中，细孔径为0.03〜1.0μm的细孔容积构成 在水银孔度计上测定的总孔体积为77〜93体积％，特性粘度为2.0dl / g以上。
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公开(公告)号：EP2196479B1
公开(公告)日：2012-01-04
申请号：EP08837924.3
申请日：2008-09-12
申请人： Kureha Corporation
CPC分类号： C08F2/18 , C08F14/22 , H01M4/621 , H01M4/623 , H01M10/052 , Y02P20/544
摘要： Disclosed are: a powder of a vinylidene fluoride polymer having a high molecular weight, which is excellent in the solubility in an organic solvent and is useful as an electrode binder for a non-aqueous battery; an NMP solution; and a method for producing an electrode mix. Specifically disclosed is a vinylidene fluoride polymer powder which is produced by using a vinylidene fluoride polymer that is produced by the supercritical suspension polymerization in an aqueous dispersion medium, in which the volume of pores each having a pore diameter of 0.03 to 1.0 μm inclusive makes up 77 to 93 vol% inclusive of the total pore volume as measured on a mercury porosimeter, and which has an inherent viscosity of 2.0 dl/g or more.
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公开(公告)号：EP2196479A1
公开(公告)日：2010-06-16
申请号：EP08837924.3
申请日：2008-09-12
申请人： Kureha Corporation
CPC分类号： C08F2/18 , C08F14/22 , H01M4/621 , H01M4/623 , H01M10/052 , Y02P20/544
摘要： A method for producing a vinylidene fluoride based polymer powder having a high molecular weight and excellent solubility in an organic solvent, which is useful as an electrode binder for nonaqueous cells, is provided. Methods for producing an NMP solution and an electrode mixture are also provided.
A vinylidene fluoride based polymer powder produced by supercritical suspension polymerization in an aqueous dispersion medium wherein a volume of pores having a pore diameter of 0.03 µm to 1.0 µm, as measured by a mercury porosimeter, is 77 vol% to 93 vol% of a total pore volume and an inherent viscosity is 2.0 dl/g or greater is obtained.摘要翻译： 本发明提供一种高分子量且在有机溶剂中的溶解性优异的偏氟乙烯系聚合物粉末的制造方法，作为非水系电池用电极粘合剂有用。 还提供了生产NMP溶液和电极混合物的方法。 1.一种偏氟乙烯系聚合物粉末，其特征在于，通过在水系分散介质中进行超临界悬浮聚合而制造，其中，由水银孔隙率计测定的细孔径为0.03μm〜1.0μm的细孔容积为总容积的77体积％〜93体积％ 孔体积和特性粘度为2.0dl / g或更大。
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公开(公告)号：EP4459719A1
公开(公告)日：2024-11-06
申请号：EP21969346.2
申请日：2021-12-28
申请人： Kureha Corporation , Kureha (China) Investment Co., Ltd , Kureha (Changshu) Fluoropolymers Co., Ltd
发明人： AOKI, Kenta , YU, Fei , SATO, Hiroshi
摘要： An adhesive of the present invention satisfies the following requirements: the turbidity is 5.0 or less; the dissolution rate of the adhesive is 10% or more and 70% or less; the logarithmic viscosity number of a dissolved component of an adhesive solution is 0.5 dL/g or more and less than 2.5 dL/g; A1735 cm -1 /A3025 cm -1 of the dissolved component of the adhesive solution is 0.20 or more and 0.80 or less; and the logarithmic viscosity number of the adhesive is greater than that of the dissolved component of the adhesive solution.
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5.发明公开
公开(公告)号：EP4404292A1
公开(公告)日：2024-07-24
申请号：EP21954488.9
申请日：2021-08-24
申请人： Kureha Corporation , Kureha (Changshu) Fluoropolymers Co., Ltd , Kureha (China) Investment Co., Ltd
发明人： YU, Fei , AOKI, Kenta , SATO, Hiroshi , ASHIDA, Kana
IPC分类号： H01M4/131 , H01M4/1391
CPC分类号： Y02E60/10 , H01M4/1391 , H01M4/131
摘要： Provided is a binder composition in which viscosity increases of an electrode mixture slurry is prevented or reduced while a high peel strength between a current collector and an electrode mixture layer is maintained.
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公开(公告)号：EP3975285A1
公开(公告)日：2022-03-30
申请号：EP20810503.1
申请日：2020-05-14
申请人： Kureha Corporation
IPC分类号： H01M4/131 , H01M4/1391 , H01M4/525 , H01M4/62 , H01M10/052 , H01M10/058
摘要： The present application is to provide a positive electrode mix for a lithium ion secondary battery that can be produced regardless of type of a binder, that can be produced more simply and easily rather than those involving, for example, washing of an active material, and that suppresses viscosity increase over time during, for example, storage. The present invention to achieve the objective above relates to a positive electrode mix for a lithium ion secondary battery, the positive electrode mix containing a positive electrode active material containing a lithium metal oxide represented by Formula (1), a vinylidene fluoride polymer, and an additive selected from the group consisting of alkali metal salts and alkaline earth metal salts.
Li 1 +xMO 2 ... (1)
In Formula (1), X is a number satisfying -0.15-
7.发明公开
公开(公告)号：EP3358662A1
公开(公告)日：2018-08-08
申请号：EP16851148.3
申请日：2016-09-13
申请人： Kureha Corporation
发明人： KOBAYASHI, Shota , AOKI, Kenta , SATO, Hiroshi , TADA, Yasuhiro
CPC分类号： H01M4/623 , C08L27/16 , C08L2205/025 , H01M4/13 , H01M4/131 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M2004/028 , H01M2220/30
摘要： To provide a binder composition having high adhesion, without producing a copolymer or an aggregate of a copolymer and an electrode active material. A binder composition according to the present invention contains: a first vinylidene fluoride polymer with an inherent viscosity of 1.7 dL/g or higher; and a second vinylidene fluoride polymer containing acrylic acid or methacrylic acid as a monomer unit.
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公开(公告)号：EP3796430A1
公开(公告)日：2021-03-24
申请号：EP18919185.1
申请日：2018-12-20
申请人： Kureha Corporation
发明人： IGARASHI, Tamito , AOKI, Kenta , KOBAYASHI, Shota , SATO, Hiroshi
IPC分类号： H01M4/131 , H01M4/1391 , H01M4/525 , H01M4/62
摘要： Provided is an electrode mixture that can suppress changes in solid content concentration during storage of a slurry. The electrode mixture according to the present invention includes an electrode active material and a binder composition, in which the binder composition contains a vinylidene fluoride copolymer and an acrylic polymer, and the electrode active material contains a lithium metal oxide represented by Li 1 x MO 2 .
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公开(公告)号：EP3358662B1
公开(公告)日：2020-11-04
申请号：EP16851148.3
申请日：2016-09-13
申请人： Kureha Corporation
发明人： KOBAYASHI, Shota , AOKI, Kenta , SATO, Hiroshi , TADA, Yasuhiro
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