公开(公告)号：US20240417543A1

公开(公告)日：2024-12-19

申请号：US18703828

申请日：2022-10-26

Applicant: Sekisui Chemical Co., Ltd.

Inventor： Ryou SAKAMOTO

IPC: C08K7/06 ,  H01M4/62

Abstract: The present invention provides a carbon material composition excellent in the dispersibility of a fibrous carbon material and capable of reducing electrode resistance. Provided is a carbon material composition containing: a fibrous carbon material; a water-based solvent; and a polyvinyl acetal resin, the polyvinyl acetal resin having an acetal group content of 40.0 mol % or less and a blockiness of hydrophobic groups measured by NMR of 0.35 or greater and 0.80 or less.

公开(公告)号：US20230084330A1

公开(公告)日：2023-03-16

申请号：US17800318

申请日：2021-03-17

Applicant: SEKISUI CHEMICAL CO., LTD.

Inventor： Ryou SAKAMOTO

IPC: C08F118/08 ,  C08K3/08 ,  H01G4/30

Abstract: The present invention provides a slurry composition in which magnetic material powder has excellent dispersibility and excellent dispersion stability and which enables production of a sheet having high surface smoothness and high adhesiveness to substrates. Provided is a slurry composition containing: a polyvinyl acetal resin; magnetic material powder; and a Na ion, the slurry composition having a Na ion content of 1,000 to 3,000 μg/g relative to the polyvinyl acetal resin.

公开(公告)号：US20240186520A1

公开(公告)日：2024-06-06

申请号：US18284155

申请日：2022-03-18

Applicant: SEKISUI CHEMICAL CO., LTD.

Inventor： Jun SASAKI ,  Yutaro ASABA ,  Keisuke TAKENAKA ,  Ryou SAKAMOTO

IPC: H01M4/62

CPC classification number: H01M4/623

Abstract: The present invention provides a resin composition for a secondary battery electrode that is excellent in the dispersibility of active materials, resistance against electrolyte solutions, and coating film density and capable of achieving both high conductivity and adhesion. Provided is a resin composition for a secondary battery electrode, the resin composition containing: an active material; a non-aqueous solvent; and a polyvinyl acetal resin, the polyvinyl acetal resin including a structural unit containing a halogen atom, and having a Vicat softening temperature of 50° C. or higher and 150° C. or lower.

公开(公告)号：US20240182668A1

公开(公告)日：2024-06-06

申请号：US18284158

申请日：2022-03-23

Applicant: SEKISUI CHEMICAL CO., LTD.

Inventor： Yutaro ASABA ,  Jun SASAKI ,  Keisuke TAKENAKA ,  Ryou SAKAMOTO

IPC: C08K3/04

CPC classification number: C08K3/041

Abstract: The present invention provides a resin composition that has excellent application properties and excellent adhesion, can achieve high electron conductivity simultaneously with the dispersibility and dispersion stability of fibrous carbon materials, and enables production of lithium secondary batteries having high capacity retention. Provided is a resin composition containing: a fibrous carbon material; a non-aqueous solvent; and a polyvinyl acetal resin, the polyvinyl acetal resin including a structural unit containing an acidic functional group, and having an average degree of polymerization of 150 or greater and 1,500 or less and a hydroxy group content of 40.0 mol % or greater and 80.0 mol % or less.