公开(公告)号：US20230174696A1

公开(公告)日：2023-06-08

申请号：US17912769

申请日：2021-03-30

Applicant: OSAKA SODA CO., LTD.

Inventor： Ryo OKADA ,  Yoshihiro MOROOKA ,  Shota MIKI ,  Motoki KITAGAWA

IPC: C08F220/18 ,  C08F220/28 ,  C08F222/16 ,  C08F2/26 ,  C08F6/22

CPC classification number: C08F220/1802 ,  C08F220/1804 ,  C08F220/281 ,  C08F222/16 ,  C08F2/26 ,  C08F6/22

Abstract: The present invention aims to provide an acrylic copolymer capable of maintaining excellent storage stability in the uncrosslinked state even after long-term exposure to high temperatures, and a crosslinked acrylic rubber product produced from the acrylic copolymer which maintains good normal-state properties and good water resistance. The present invention is based on the finding that an acrylic copolymer produced by polymerizing a liquid mixture of an alkoxyalkyl (meth)acrylate containing an alkoxyalkyl group and a crosslinkable monomer containing a carboxy group has excellent storage stability and that a crosslinked product produced from the acrylic copolymer has good normal-state properties and good water resistance.

公开(公告)号：US20180366731A1

公开(公告)日：2018-12-20

申请号：US15781333

申请日：2016-12-21

Applicant: Osaka Soda Co., Ltd.

Inventor： Kazuhiro TAKAHASHI ,  Yoshihiro MOROOKA ,  Takashi MATSUO ,  Hideaki UEDA

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/36 ,  C08F265/06

Abstract: Provided is a binder for a battery electrode, the binder having superior binding properties and being capable of effectively decreasing the internal resistance of a battery while still being usable as an aqueous binder with low environmental burden. A binder for a battery electrode according to the present invention has a core shell structure of a core section (A) containing a copolymer the principal constituent of which is methyl methacrylate and a shell section (B) having a (meth)acrylate-based copolymer containing (meth)acrylate as a polymerization component, wherein the swelling ratios with respect to a mixed solvent in which ethylene carbonate and diethyl carbonate are mixed at a volume ratio of 3:7 are 10% or less for the resin constituting the core section (A) and 30% or more for the resin constituting the shell section (B).