Title:
Polytetrafluoroethylene and a manufacturing method for the same
Document Type and Number:
Japanese Patent JP5907228
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.
Inventors:
Makoto Ono
Hiroyuki Sato
Chie Sawauchi
Taketo Kato
Hiroyuki Sato
Chie Sawauchi
Taketo Kato
Application Number:
JP2014202908A
Publication Date:
April 26, 2016
Filing Date:
October 01, 2014
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
C08F14/26; C08F2/26
Domestic Patent References:
| JP3552685B2 | ||||
| JP2000143727A | ||||
| JP2002201217A | ||||
| JP2003119204A |
Foreign References:
| WO2010113950A1 | ||||
| WO2005042593A1 | ||||
| WO2007049517A1 | ||||
| WO2007046345A1 |
Attorney, Agent or Firm:
Atomi International Patent Office
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