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    SECONDARY BATTERY ELECTRODE BINDER, SECONDARY BATTERY ELECTRODE MIXTURE LAYER COMPOSITION, SECONDARY BATTERY ELECTRODE, AND SECONDARY BATTERY
    4.
    发明公开
    SECONDARY BATTERY ELECTRODE BINDER, SECONDARY BATTERY ELECTRODE MIXTURE LAYER COMPOSITION, SECONDARY BATTERY ELECTRODE, AND SECONDARY BATTERY 审中-公开

    公开(公告)号：EP4043503A1

    公开(公告)日：2022-08-17

    申请号：EP20874102.5

    申请日：2020-10-02

    申请人： Toagosei Co., Ltd.

    发明人： SAITO Naohiko ,  NAKANO Tomoko ,  HIGASAYAMA Ayano

    IPC分类号： C08F220/06 ,  C08F220/26 ,  H01M4/02 ,  H01M4/04 ,  H01M4/13 ,  H01M4/139 ,  H01M4/62 ,  H01G11/38

    摘要： The present invention provides a secondary battery electrode binder that exhibits superior binding capacity as compared to conventional binders and that also makes it possible to reduce electrode slurry viscosity, even when there is a high concentration of active material in an electrode mixture layer composition. The present invention also provides a secondary battery electrode mixture layer composition, a secondary battery electrode, and a secondary battery that are obtained using the binder. The present invention relates to a secondary battery electrode binder that contains a carboxyl-group-containing polymer or a salt of a carboxyl-group-containing polymer. The carboxyl-group-containing polymer or salt of a carboxyl-group-containing polymer includes structural units that are derived from monomers that are represented by general formula (1) and structural units that are derived from ethylenic unsaturated carboxylic acid monomers that are different from general formula (1). The structural units derived from monomers that are represented by general formula (1) are 0.1-20 mass% of the total structural units of the carboxyl-group-containing polymer or salt of a carboxyl-group-containing polymer.

    ACRYLIC RUBBER WITH EXCELLENT STORAGE STABILITY
    5.
    发明公开
    ACRYLIC RUBBER WITH EXCELLENT STORAGE STABILITY 审中-公开

    公开(公告)号：EP4001326A1

    公开(公告)日：2022-05-25

    申请号：EP20843641.0

    申请日：2020-06-05

    申请人： Zeon Corporation

    发明人： MASUDA, Hirofumi ,  KAWANAKA, Takafumi

    IPC分类号： C08F220/12 ,  C08F220/26 ,  C08K5/13 ,  C08L33/04 ,  C08L33/14

    摘要： An acrylic rubber, including: 50 to 99.9% by weight of a bond unit derived from at least one (meth) acrylic acid ester selected from the group consisting of (meth) acrylic acid alkyl ester and (meth) acrylic acid alkoxyalkyl ester; 0.1 to 20% by weight of a bond unit derived from a monomer containing a reactive group; and 0 to 30% by weight of a bond unit derived from other monomer, wherein the acrylic rubber contains a phenolic anti-aging agent represented by a general formula (1),

    (R1 represents an isopropyl group or a t-butyl group, and R2 represents an alkyl group having 1 to 12 carbon atoms.), and the weight average molecular weight (Mw) of the acrylic rubber is in the range of 100,000 to 5,000,000.

    ACRYLIC RUBBER AND CROSSLINKABLE COMPOSITION THEREOF
    8.
    发明公开
    ACRYLIC RUBBER AND CROSSLINKABLE COMPOSITION THEREOF 审中-公开

    公开(公告)号：EP3805281A1

    公开(公告)日：2021-04-14

    申请号：EP19807872.7

    申请日：2019-05-16

    申请人： Unimatec Co., Ltd.

    发明人： TOGE, Daichi ,  MORIYAMA, Iwao

    IPC分类号： C08F220/18 ,  C08F220/22 ,  C08F220/26 ,  C08K3/06 ,  C08K5/3492 ,  C08K5/36 ,  C08L33/08

    摘要： An acrylic rubber that is a copolymer in which 1 to 4 wt.% of a reactive halogen group-containing vinyl monomer is copolymerized as a crosslinkable comonomer, wherein 45 to 65 wt.% of n-butyl acrylate, 10 to 35 wt.% of 2-methoxyethyl acrylate and 8 to 30 wt.% of ethoxyethoxyethyl acrylate are copolymerized in 100 wt.% of comonomers other than the crosslinkable comonomer. This ethoxyethoxyethyl acrylate-copolymerized acrylic rubber can suppress the reduction of oil resistance while improving cold resistance represented by a TR-10 value, and by compounding it with a vulcanizing agent corresponding to the crosslinkable group thereof, a crosslinkable composition is formed.