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 (JP)
IMAHORI YUJI (JP)
IMAHORI YUJI (JP)
Application Number:
PCT/JP2005/012756
Publication Date:
February 09, 2006
Filing Date:
July 11, 2005
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
KODANI TETSUHIRO (JP)
IMAHORI YUJI (JP)
KODANI TETSUHIRO (JP)
IMAHORI YUJI (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 | 2005-07-28 | |||
| JP2005179524A | 2005-07-07 | |||
| JP2004076108A | 2004-03-11 | |||
| JPH11333924A | 1999-12-07 | |||
| JPS63309551A | 1988-12-16 | |||
| JPH04311711A | 1992-11-04 |
Other References:
See also references of EP 1792919A4
SHIGEMATSU ET AL., JPN. J. APPL. PHYS., vol. 39, 2000, pages 6358
SHIGEMATSU ET AL., JPN. J. APPL. PHYS., vol. 39, 2000, pages 6358
Attorney, Agent or Firm:
Asahina, Sohta (2-22 Tanimachi 2-chome, Chuo-k, Osaka-shi Osaka 12, JP)
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