Title:
含フッ素共重合体および低薬液透過性含フッ素樹脂組成物
Document Type and Number:
Japanese Patent JP4599640
Kind Code:
B2
Abstract:
To provide a novel PFA-based fluorine-containing copolymer having improved impermeability to liquid chemicals while retaining the excellent heat resistance, stress cracking resistance and processability inherent in PFA-based fluororesins, a material and a molded article useful in the field of semiconductor production apparatus and the like, using the copolymer. The present invention provides a fluorine-containing copolymer comprising 90 to 99.4% by mole of a repeating unit derived from tetrafluoroethylene, 0.5 to 5% by mole of a repeating unit derived from at least one lower perfluoro(alkyl vinyl ether) represented by the formula (1):in which Rf<1 >is a perfluoroalkyl group having 2 to 4 carbon atoms, and 0.1 to 5% by mole of a repeating unit derived from at least one higher perfluoro(vinyl ether) represented by the formula (2):in which Rf<2 >is a perfluoroalkyl group having 5 to 10 carbon atoms or a perfluoro(alkoxy alkyl) group having 4 to 17 carbon atoms, wherein the fluorine-containing copolymer has a melt flow rate of 0.1 g/10 minutes to 100 g/10 minutes and melting point of 290° to 325° C., and a resin composition using the same.
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Inventors:
Takahiro Taira
Takahisa Aoyama
Katsuhide Otani
Tetsuo Shimizu
Takahisa Aoyama
Katsuhide Otani
Tetsuo Shimizu
Application Number:
JP33845299A
Publication Date:
December 15, 2010
Filing Date:
November 29, 1999
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
C08F214/26; C08L27/18
Domestic Patent References:
| JP7018026A | ||||
| JP9066570A | ||||
| JP11010653A | ||||
| JP10053624A |
Attorney, Agent or Firm:
Kawamura Taku
Yousuke Fujimori
Seiji Tani
Kei Saki
Yousuke Fujimori
Seiji Tani
Kei Saki