Title:
FLUORINE-CONTAINING COPOLYMER
Document Type and Number:
Japanese Patent JP2022132231
Kind Code:
A
Abstract:
To provide a fluorine-containing copolymer excellent in extrusion moldability which can obtain a molded article excellent in mold followability and obtain a molded article which is excellent in wear resistance at 65°C, ozone resistance, solvent crack resistance. low air permeability, creep resistance and tensile creep resistance properties at 140°C and is less likely to elute fluorine ions into a chemical liquid.SOLUTION: There is provided a fluorine-containing copolymer containing a tetrafluoroethylene unit, a hexafluoropropylene unit and a perfluoro (ethyl vinyl ether) unit, wherein the content of the hexafluoropropylene unit is 9.5 to 11.6 mass% based on the total monomer units, the content of the perfluoro (ethyl vinyl ether) unit is 1.2 to 2.9 mass% based on the total monomer units, the melt flow rate at 372°C is 19.0 to 28.0 g/10 min and the total number of -CF2H, a carbonyl group-containing terminal group, -CF=CF2 and -CH2OH is 90 or less per main-chain carbon number of 106.SELECTED DRAWING: None
Inventors:
ISAKA TADAHARU
YOSHIIE YUMI
YAMAMOTO YUKARI
YOSHIIE YUMI
YAMAMOTO YUKARI
Application Number:
JP2022029721A
Publication Date:
September 07, 2022
Filing Date:
February 28, 2022
Export Citation:
Assignee:
DAIKIN IND LTD
International Classes:
C08F214/26; H01B7/02
Domestic Patent References:
| JP2017503052A | 2017-01-26 | |||
| JP2018523272A | 2018-08-16 | |||
| JPH11512217A | 1999-10-19 | |||
| JP2011508681A | 2011-03-17 | |||
| JP2011506140A | 2011-03-03 | |||
| JP2015516029A | 2015-06-04 | |||
| JP2011514407A | 2011-05-06 | |||
| JP2014224228A | 2014-12-04 | |||
| JP2017197690A | 2017-11-02 |
Foreign References:
| WO2001036504A1 | 2001-05-25 |
Attorney, Agent or Firm:
Eternal patent business corporation