公开(公告)号：US20210296651A1

公开(公告)日：2021-09-23

申请号：US17260440

申请日：2019-07-12

Applicant: SHOWA DENKO K.K.

Inventor： Tomonori KURATA ,  Shuhei MARUTA ,  Kirida KUNANURUKSAPONG ,  Mitsuru HANASAKI

IPC: H01M4/62 ,  H01M4/13 ,  H01M10/0525 ,  C08F290/06

Abstract: The present invention relates to a copolymer for a binder for a non-aqueous battery electrode, which ensures sufficient binding properties between active materials and between the active materials and a current collector, suppresses generation of aggregates in a slurry containing the electrode active material, suppresses generation of cracks in an electrode active material layer, and sufficiently ensures peel strength of the electrode active material layer against the current collector. The copolymer for a binder for a non-aqueous battery electrode is a copolymer (P) of a monomer mixture (M) containing a monomer (A) represented by general formula (1), a (meth)acrylic acid monomer (B), and a monomer (C) represented by general formula (2), wherein a content of a structure derived from the monomer (A) in the copolymer (P) is 0.5 to 20.0 mass % and a content of a structure derived from the monomer (C) in the copolymer (P) is 0.5 to 20.0 mass %.

公开(公告)号：US20220176273A1

公开(公告)日：2022-06-09

申请号：US17591774

申请日：2022-02-03

Applicant: SHOWA DENKO K.K.

Inventor： Shuhei MARUTA

IPC: B01D15/34 ,  G01N30/02

Abstract: An object of the present invention is to provide a packing material suitable for use as a packing material for size exclusion chromatography for fractionation that requires large-scale treatment, the packing material being capable of being produced by a simple process and reducing column pressure drop even when the particle diameter is small, and is to provide a method for producing the packing material. In the present invention, a packing material for size exclusion chromatography is obtained by a production process including polymerizing glycerol 1,3-dimethacrylate and glycidyl methacrylate in the presence of a polymerization initiator, hydrophilizing the resulting porous particles made of a copolymer using a sugar alcohol, and then opening the rings of remaining glycidyl groups using a mineral acid.

公开(公告)号：US20200054967A1

公开(公告)日：2020-02-20

申请号：US16487329

申请日：2018-02-09

Applicant: SHOWA DENKO K.K.

Inventor： Shuhei MARUTA

IPC: B01D15/34 ,  G01N30/02

Abstract: An object of the present invention is to provide a packing material suitable for use as a packing material for size exclusion chromatography for fractionation that requires large-scale treatment, the packing material being capable of being produced by a simple process and reducing column pressure drop even when the particle diameter is small, and is to provide a method for producing the packing material. In the present invention, a packing material for size exclusion chromatography is obtained by a production process including polymerizing glycerol 1,3-dimethacrylate and glycidyl methacrylate in the presence of a polymerization initiator, hydrophilizing the resulting porous particles made of a copolymer using a sugar alcohol, and then opening the rings of remaining glycidyl groups using a mineral acid.