Title:
FLUORINE RESIN AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2021/193717
Kind Code:
A1
Abstract:
The present invention pertains to: a fluorine resin that includes a residue unit represented by formula (1), and an end group represented by formula (2); and a fluorine resin that includes a residue unit represented by formula (1) and has a transmittance of 50% or higher measured at an optical path length of 10 mm and a wavelength of 275 nm when dissolved in perfluorohexane to produce a 10 wt% perfluorohexane solution. (In formula (1): Rf1, Rf2, Rf3, and Rf4 each independently represent one selected from the group consisting of fluorine atoms, C1-7 linear perfluoroalkyl groups, C3-7 branched perfluoroalkyl groups, or C3-7 cyclic perfluoroalkyl groups; the perfluoroalkyl groups may have an etheric oxygen atom; Rf1, Rf2, Rf3, and Rf4 may bond to each other to form a ring having 4 to 8 carbon atoms; and the ring may include an etheric oxygen atom.) (In formula (2), i is an integer of 3-20) The present invention provides: a fluorine resin that includes an oxolane ring, has suppressed yellowing after heating and melting, and especially has reduced discoloration, even in molding of thick products; and a method for producing said fluorine resin.
Inventors:
SAKAGUCHI KOTA (JP)
IWANAGA KAZUNARI (JP)
SHIMONO TOMOYA (JP)
NAGAI TOMONARI (JP)
YAMAKAWA HIROSHI (JP)
IWANAGA KAZUNARI (JP)
SHIMONO TOMOYA (JP)
NAGAI TOMONARI (JP)
YAMAKAWA HIROSHI (JP)
Application Number:
PCT/JP2021/012248
Publication Date:
September 30, 2021
Filing Date:
March 24, 2021
Export Citation:
Assignee:
TOSOH CORP (JP)
International Classes:
C07D317/16; C08F4/34; C08F24/00
Domestic Patent References:
| WO2010137627A1 | 2010-12-02 | |||
| WO2011013578A1 | 2011-02-03 | |||
| WO2011013577A1 | 2011-02-03 |
Foreign References:
| JP2017510451A | 2017-04-13 | |||
| JP2007504125A | 2007-03-01 | |||
| JPH1149749A | 1999-02-23 | |||
| JP2002332275A | 2002-11-22 | |||
| JP2004059763A | 2004-02-26 | |||
| JP2020055770A | 2020-04-09 | |||
| JP2020055776A | 2020-04-09 | |||
| JPH1149749A | 1999-02-23 |
Other References:
KOIKE, KOTARO ET AL.: "Synthesis and characterization of copolymers of perfluoro(2- methylene-4,5-dimethyl-1,3-dioxolane) and perfluoro(2-methylene-1,3-dioxane", JOURNAL OF FLUORINE CHEMISTRY, vol. 156, 2013, pages 198 - 202, XP028786026, DOI: 10.1016/j.fluchem. 2013.10.00 1
MACROMOLECULES, vol. 38, 2005, pages 4237 - 4245
JOURNAL OF THE CHEMICAL SOCIETY OF JAPAN, vol. 12, 2001, pages 659 - 668
J. APP. POLYM. SCI., vol. 72, 1999, pages 1101 - 1108
CHEM. REV., vol. 96, 1996, pages 1779 - 1808
MACROMOLECULES, vol. 38, 2005, pages 4237 - 4245
JOURNAL OF THE CHEMICAL SOCIETY OF JAPAN, vol. 12, 2001, pages 659 - 668
J. APP. POLYM. SCI., vol. 72, 1999, pages 1101 - 1108
CHEM. REV., vol. 96, 1996, pages 1779 - 1808
Attorney, Agent or Firm:
SIKS & CO. (JP)
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