公开(公告)号：US20220336868A1

公开(公告)日：2022-10-20

申请号：US17753559

申请日：2020-08-31

Applicant: ZEON CORPORATION

Inventor： Kazuki ASAI

IPC: H01M10/42 ,  H01M10/0525 ,  H01M50/449 ,  H01M50/489 ,  C08F220/56 ,  C08L33/26 ,  C08F265/06 ,  C08L51/00

Abstract: Provided is a slurry composition for a non-aqueous secondary battery heat-resistant layer that has excellent dispersion stability and coatability and can form a heat-resistant layer for a non-aqueous secondary battery having both excellent heat shrinkage resistance and reduced residual water content. The slurry composition contains a water-soluble polymer, non-conductive organic particles, and water. The water-soluble polymer includes an amide group-containing monomer unit, an acid group-containing monomer unit, and a hydroxyl group-containing monomer unit. The proportional content of the amide group-containing monomer unit in the water-soluble polymer is not less than 63 mass % and not more than 98 mass %, and the proportional content of the acid group-containing monomer unit in the water-soluble polymer is not less than 1 mass % and not more than 20 mass %. The non-conductive organic particles include a cross-linkable monomer unit with a proportional content of not less than 20 mass % and not more than 95 mass %.

公开(公告)号：US20220311003A1

公开(公告)日：2022-09-29

申请号：US17635761

申请日：2020-08-21

Applicant: ZEON CORPORATION

Inventor： Yuzo KITAZAWA ,  Kazuki ASAI

IPC: H01M4/62 ,  C08F20/44 ,  C08F20/06

Abstract: Provided is a binder composition for a non-aqueous secondary battery heat-resistant layer containing a particulate polymer including an acidic group-containing monomer unit with a proportional content of not less than 1 mass % and not more than 5 mass % and a cyano group-containing monomer unit with a proportional content of not less than 4.5 mass % and not more than 25 mass %.

公开(公告)号：US20210184313A1

公开(公告)日：2021-06-17

申请号：US17268479

申请日：2019-08-21

Applicant: ZEON CORPORATION

Inventor： Kazuki ASAI ,  Yasuhiro AKITA ,  Kenya SONOBE

IPC: H01M50/446 ,  H01M50/454 ,  H01M50/423 ,  H01M50/417 ,  H01M10/0525

Abstract: Provided is a slurry composition for a functional layer that can form a functional layer capable of closely adhering strongly to a separator substrate and that can enhance rate characteristics of a secondary battery including a separator that includes the functional layer. The slurry composition for a functional layer contains a binder and a melamine compound. The binder is a polymer including at least one functional group selected from the group consisting of a carboxy group, a hydroxyl group, an amino group, an epoxy group, an oxazoline group, a sulfo group, a nitrile group, and an amide group. The melamine compound has a volume-average particle diameter of not less than 20 nm and not more than 300 nm and constitutes a proportion of not less than 0.5 mass % and not more than 85 mass % among the total of the binder and the melamine compound.

公开(公告)号：US20220320516A1

公开(公告)日：2022-10-06

申请号：US17597537

申请日：2020-07-08

Applicant: ZEON CORPORATION

Inventor： Kazuki ASAI

IPC: H01M4/62 ,  H01M10/0525

Abstract: Provided is a binder composition for a non-aqueous secondary battery heat-resistant layer with which it is possible to produce a slurry composition for a non-aqueous secondary battery heat-resistant layer that has excellent dispersion stability and coatability and that can form a heat-resistant layer for a non-aqueous secondary battery having excellent heat shrinkage resistance. The binder composition for a non-aqueous secondary battery heat-resistant layer contains a water-soluble polymer and water. The water-soluble polymer includes an amide group-containing monomer unit, an acid group-containing monomer unit, and a hydroxyl group-containing monomer unit. The proportional content of the amide group-containing monomer unit in the water-soluble polymer is not less than 63 mass % and not more than 98 mass % and the proportional content of the acid group-containing monomer unit in the water-soluble polymer is not less than 1 mass % and not more than 20 mass %.

公开(公告)号：US20220140437A1

公开(公告)日：2022-05-05

申请号：US17310671

申请日：2020-02-03

Applicant: ZEON CORPORATION

Inventor： Kazuki ASAI ,  Keiichiro TANAKA

IPC: H01M50/449 ,  H01M10/0525 ,  C08L25/04 ,  H01M10/0568 ,  H01M10/0569

Abstract: Provided is a slurry composition for a non-aqueous secondary battery functional layer with which it is possible to form a functional layer that has excellent adhesiveness after immersion in electrolyte solution and can cause a secondary battery to display excellent rate characteristics and cycle characteristics while, on the other hand, reducing the amount of gas remaining inside the secondary battery. The slurry composition contains a particulate polymer and a solvent. The particulate polymer has a core-shell structure including a core portion and a shell portion at least partially covering an outer surface of the core portion. The particulate polymer has a glass-transition temperature of 20° C. or higher and has a surface acid content of not less than 0.05 mmol/g and not more than 0.50 mmol/g.

公开(公告)号：US20200266421A1

公开(公告)日：2020-08-20

申请号：US16646571

申请日：2018-09-18

Applicant: ZEON CORPORATION

Inventor： Kazuki ASAI ,  Koji ANNAKA

IPC: H01M4/131 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0565 ,  C08F220/06

Abstract: Provided is a composition for a non-aqueous secondary battery functional layer that has excellent slurry stability and can form a functional layer for which sufficient heat shrinkage resistance is ensured. The composition for a non-aqueous secondary battery functional layer contains organic particles, a water-soluble polymer, and water. The organic particles include a polyfunctional monomer unit in a proportion of not less than 20 mass % and not more than 95 mass %, and the water-soluble polymer includes a hydroxyl group-containing structural unit in a proportion of not less than 15 mass % and not more than 100 mass %.

公开(公告)号：US20200052274A1

公开(公告)日：2020-02-13

申请号：US16492317

申请日：2018-03-13

Applicant: ZEON CORPORATION

Inventor： Kazuki ASAI

IPC: H01M2/16 ,  H01M4/62 ,  C08F220/18 ,  C08K5/42

Abstract: Disclosed is a binder composition for a non-aqueous secondary battery porous membrane which comprises: a particulate polymer; a sulfosuccinic acid ester and/or a salt thereof; and water, wherein the particulate polymer has a surface acid amount S of 0.05 mmol/g or more and 0.50 mmol/g or less, and a ratio L/S which is a ratio of an acid amount L in a liquid phase of the binder composition to the surface acid amount S is 0.1 or more and 0.2 or less.

公开(公告)号：US20180351149A1

公开(公告)日：2018-12-06

申请号：US15777220

申请日：2016-11-28

Applicant: ZEON CORPORATION

Inventor： Junnosuke AKIIKE ,  Keiichiro TANAKA ,  Kazuki ASAI ,  Kei OURA

IPC: H01M2/16 ,  H01M10/0525 ,  H01M10/058 ,  C09J11/08 ,  C09J133/10

CPC classification number: C08F265/08 ,  C09J7/00 ,  C09J11/08 ,  C09J201/00 ,  H01M2/16 ,  H01M4/13 ,  H01M10/058

Abstract: Disclosed is a composition for non-aqueous secondary battery adhesive layer which comprises a particulate polymer and a binder, wherein the particulate polymer comprises 5% to 50% by mass of a (meth)acrylonitrile monomer unit and 0.1% to 3.5% by mass of a cross-linkable monomer unit. Also disclosed is a non-aqueous secondary battery adhesive layer prepared by using the composition for non-aqueous secondary battery adhesive layer. Also disclosed is a laminate which comprises a substrate and the non-aqueous secondary battery adhesive layer disposed on at least one side of the substrate either directly or indirectly through one or more other layers. Also disclosed is a non-aqueous secondary battery wherein at least one of a positive electrode, a negative electrode, and a separator comprises the non-aqueous secondary battery adhesive layer.

公开(公告)号：US20180342711A1

公开(公告)日：2018-11-29

申请号：US15776540

申请日：2016-11-17

Applicant: ZEON CORPORATION

Inventor： Kazuki ASAI

IPC: H01M2/02 ,  H01M4/62 ,  H01M4/139 ,  H01M2/16 ,  H01M10/0585 ,  H01M10/0587 ,  H01M10/0525

Abstract: A composition for a non-aqueous secondary battery adhesive layer contains organic particles and a water-soluble polymer. The water-soluble polymer has a 1 mass % aqueous solution viscosity of at least 500 mPa·s and not more than 9,000 mPa·s. Viscosity η0 of the composition for a non-aqueous secondary battery adhesive layer at a shear rate of 100 s−1 is at least 10 mPa·s and not more than 200 mPa·s, and a ratio of η0 relative to viscosity η1 of the composition for a non-aqueous secondary battery adhesive layer at a shear rate of 10,000 s−1 is at least 1.5 and not more than 5.0.

公开(公告)号：US20240429396A1

公开(公告)日：2024-12-26

申请号：US18684835

申请日：2022-06-30

Applicant: ZEON CORPORATION

Inventor： Kazuki ASAI ,  Takumi SUGIMOTO ,  Noriyuki OSHIDA

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/36

Abstract: Composite particles contain an electrode active material, a conductive material, and a binder. These composite particles have an average value of area-equivalent diameter of not less than 20 μm and not more than 250 μm, a coefficient of variation of area-equivalent diameter, calculated according to formula 1: (standard deviation of area-equivalent diameter/average value of area-equivalent diameter)×100, of not less than 5% and not more than 50%, and a coefficient of density, calculated according to formula 2: compressed density/bulk density, of not less than 1.3 and not more than 3.5.