Title:
FLUORORESIN AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2021/153337
Kind Code:
A1
Abstract:
Provided is a fluororesin having good resistance to heat distortion. This fluororesin contains a constituent unit T derived from tetrafluoroethylene, a constituent unit H derived from hexafluoropropylene and a constituent unit V derived from vinylidene fluoride. Relative to the total amount of constituent units T, H and V, the molar ratio (T) of the constituent unit T is not less than 0.25 and less than 0.56 and the molar ratio (V) of the constituent unit V is not more than 0.60. The fluororesin contains no inorganic filler or contains 5 mass% or less of an inorganic filler. If the weight of the fluororesin is denoted by W (mg) and the area of the fluororesin, as viewed from above after being held for 3 hours at 200ºC, is denoted by S (mm2), the fluidity index F, which is determined by dividing S by W, is 1.5 more or less.
Inventors:
YOSHIKAWA GAKU (JP)
HOTTA SHOHEI (JP)
NAKATA KUNIHIKO (JP)
HOTTA SHOHEI (JP)
NAKATA KUNIHIKO (JP)
Application Number:
PCT/JP2021/001622
Publication Date:
August 05, 2021
Filing Date:
January 19, 2021
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
C08F8/00; C08F214/18; C08J7/00; H01L23/29; H01L23/31; H01L33/56
Domestic Patent References:
| WO2017175824A1 | 2017-10-12 |
Foreign References:
| JP2008055618A | 2008-03-13 | |||
| JPH05255518A | 1993-10-05 | |||
| JPH11323053A | 1999-11-26 | |||
| JP2001102639A | 2001-04-13 | |||
| JPH09176426A | 1997-07-08 | |||
| JPH11106589A | 1999-04-20 | |||
| JP2009051876A | 2009-03-12 |
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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