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Title:
METHOD FOR PRODUCING HOMOPOLYMER OF VINYLIDENE FLUORIDE HAVING I TYPE CRYSTAL STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2006/013701
Kind Code:
A1
Abstract:
A method for producing a homopolymer of vinylidene fluoride containing a I type crystal structure in an amount of 70 mass % or more, characterized in that it comprises dissolving a homopolymer of vinilidene fluoride having a number average polymerization degree of 3 to 20 into an organic solvent having a dipole moment of 2.8 or more or a solvent containing the organic solvent as a part thereof, and then vaporizing said solvent. The above method allows the easy production of a homopolymer of vinylydene fluoride containing a I type crystal structure at a high purity.

Inventors:
Kodani, Tetsuhiro c/o Yodogawa-seisakusho (DAIKIN INDUSTRIES LTD. 1-1, Nishihitotsuya, Settsu-sh, Osaka 85, 56685, JP)
Imahori, Yuji c/o Yodogawa-seisakusho (DAIKIN INDUSTRIES LTD. 1-1, Nishihitotsuya, Settsu-sh, Osaka 85, 56685, JP)
Application Number:
PCT/JP2005/012756
Publication Date:
February 09, 2006
Filing Date:
July 11, 2005
Export Citation:
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Assignee:
DAIKIN INDUSTRIES, LTD. (Umeda Center Building, 4-12 Nakazaki-Nishi 2-chom, e, Kita-ku, Osaka-sh, Osaka 23, 53083, JP)
Kodani, Tetsuhiro c/o Yodogawa-seisakusho (DAIKIN INDUSTRIES LTD. 1-1, Nishihitotsuya, Settsu-sh, Osaka 85, 56685, JP)
Imahori, Yuji c/o Yodogawa-seisakusho (DAIKIN INDUSTRIES LTD. 1-1, Nishihitotsuya, Settsu-sh, Osaka 85, 56685, JP)
International Classes:
B05D7/24; B32B27/30; C08F114/22; C08F6/00; C08J5/18; C08L27/16; (IPC1-7): C08F6/00; B05D7/24; B32B27/30; C08F114/22; C08J5/18; C08L27:16
Foreign References:
JP2005200623A
JP2005179524A
JP2004076108A
JPH11333924A
JPS63309551A
JPH04311711A
Other References:
See also references of EP 1792919A1
SHIGEMATSU ET AL. JPN. J. APPL. PHYS. vol. 39, 2000, page 6358
Attorney, Agent or Firm:
Asahina, Sohta (NS Building, 2-22 Tanimachi 2-chome, Chuo-k, Osaka-shi Osaka 12, 54000, JP)
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