Title:
AQUEOUS RESIN COMPOSITION FOR LITHIUM ION SECONDARY BATTERY BINDERS AND SEPARATOR FOR LITHIUM ION SECONDARY BATTERIES
Document Type and Number:
WIPO Patent Application WO/2017/188055
Kind Code:
A1
Abstract:
An aqueous resin composition for lithium ion secondary battery binders, which contains core-shell particles (A), each of which has a core part formed of a polymer (a1) and a shell part formed of a polymer (a2), and an aqueous medium (B). This aqueous resin composition for lithium ion secondary battery binders is characterized in that: the monomer starting materials of the polymer (a1) contain 45-95.5% by mass of methyl methacrylate and 4-40% by mass of a (meth)acrylate having an alkyl group with 4 or more carbon atoms; and the monomer starting materials of the polymer (a2) contain 60% by mass or more of styrene. Since this aqueous resin composition has excellent film forming properties at low temperatures and excellent adhesion to an electrode and to a porous body that constitutes a separator, this aqueous resin composition is suitable for use as a binder.
Inventors:
KAJIKAWA MASAHIRO (JP)
Application Number:
PCT/JP2017/015533
Publication Date:
November 02, 2017
Filing Date:
April 18, 2017
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
H01M50/409; H01M50/489
Domestic Patent References:
| WO2015005145A1 | 2015-01-15 | |||
| WO2015005151A1 | 2015-01-15 |
Foreign References:
| JP2015028842A | 2015-02-12 | |||
| JP2015041576A | 2015-03-02 | |||
| JP2015088253A | 2015-05-07 | |||
| JP2017050149A | 2017-03-09 | |||
| JP2017084651A | 2017-05-18 |
Attorney, Agent or Firm:
KONO Michihiro (JP)
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