Title:
ポリテトラフルオロエチレン及びその製造方法
Document Type and Number:
Japanese Patent JP5901290
Kind Code:
B2
Abstract:
It is an object of the present invention to provide polytetrafluoroethylene suitable for forming a porous polytetrafluoroethylene film using a high water-soluble surfactant with high volatility. Polytetrafluoroethylene has non-melt-secondary-processability, standard specific gravity of 2.160 or less, an average primary particle size of 150 nm or more, stress relaxation time of 500 seconds or more, and break strength of 29.7 N or more. The polytetrafluoroethylene is obtainable by emulsion polymerization of tetrafluoroethylene in the presence of a fluorinated surfactant with LogPOW of 3.4 or less.
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Inventors:
Makoto Ono
Hiroyuki Sato
Chie Sawauchi
Taketo Kato
Hiroyuki Sato
Chie Sawauchi
Taketo Kato
Application Number:
JP2011507216A
Publication Date:
April 06, 2016
Filing Date:
March 30, 2010
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
C08F2/26; C08F14/26; C08F114/26
Domestic Patent References:
| JP2003119204A | 2003-04-23 | |||
| JP2003119204A | 2003-04-23 |
Foreign References:
| WO2007049517A1 | 2007-05-03 | |||
| WO2005042593A1 | 2005-05-12 |
Attorney, Agent or Firm:
Atomi International Patent Office