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Title:
VINYLIDENE FLUORIDE POLYMER POWDER AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2009/047969
Kind Code:
A1
Abstract:
Disclosed are: a powder of a vinylidene fluoride polymer having a high molecular weight, which is excellent in the solubility in an organic solvent and is useful as an electrode binder for a non-aqueous battery; an NMP solution; and a method for producing an electrode mix. Specifically disclosed is a vinylidene fluoride polymer powder which is produced by using a vinylidene fluoride polymer that is produced by the supercritical suspension polymerization in an aqueous dispersion medium, in which the volume of pores each having a pore diameter of 0.03 to 1.0 μm inclusive makes up 77 to 93 vol% inclusive of the total pore volume as measured on a mercury porosimeter, and which has an inherent viscosity of 2.0 dl/g or more.

Inventors:
SAKUMA, Mitsuyasu (Research Center 16, Ochiai, Nishiki-machi, Iwaki-sh, Fukushima 86, 9748686, JP)
佐久間充康 (〒86 福島県いわき市錦町落合16 株式会社クレハ 総合研究所内 Fukushima, 9748686, JP)
SATO, Hiroshi (Research Center 16, Ochiai, Nishiki-machi, Iwaki-sh, Fukushima 86, 9748686, JP)
佐藤宏 (〒86 福島県いわき市錦町落合16 株式会社クレハ 総合研究所内 Fukushima, 9748686, JP)
MIYAHARA, Michihisa (Iwaki Factory 16, OchiaiNishiki-machi, Iwaki-sh, Fukushima 86, 9748686, JP)
Application Number:
JP2008/066927
Publication Date:
April 16, 2009
Filing Date:
September 12, 2008
Export Citation:
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Assignee:
KUREHA CORPORATION (3-2 Nihonbashi Hama-cho 3-chome, Chuo-ku Tokyo, 52, 1038552, JP)
株式会社クレハ (〒52 東京都中央区日本橋浜町三丁目3番2号 Tokyo, 1038552, JP)
SAKUMA, Mitsuyasu (Research Center 16, Ochiai, Nishiki-machi, Iwaki-sh, Fukushima 86, 9748686, JP)
佐久間充康 (〒86 福島県いわき市錦町落合16 株式会社クレハ 総合研究所内 Fukushima, 9748686, JP)
SATO, Hiroshi (Research Center 16, Ochiai, Nishiki-machi, Iwaki-sh, Fukushima 86, 9748686, JP)
佐藤宏 (〒86 福島県いわき市錦町落合16 株式会社クレハ 総合研究所内 Fukushima, 9748686, JP)
International Classes:
C08F2/18; C08F14/22; H01M4/62; H01M10/052; H01M10/36
Foreign References:
JPS59174605A
JPS4817388B1
JP2005310747A
JPH0673135A
JPS4219333B1
Other References:
See also references of EP 2196479A1
None
Attorney, Agent or Firm:
ONO, Shinjiro et al. (YUASA AND HARA, Section 206 New Ohtemachi Bldg.,2-1, Ohtemachi 2-chom, Chiyoda-ku Tokyo 04, 1000004, JP)
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