Title:
VINYLIDENE-FLUORIDE-BASED POLYMER COMPOSITION OBTAINED USING NON-FLUORINATED SURFACTANT AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/203230
Kind Code:
A1
Abstract:
Provided are: a vinylidene-fluoride-based polymer composition which is less apt to lather at time of use and hence has satisfactory handleability and which contains no fluorinated surfactant; and a method for producing a vinylidene-fluoride-based polymer by which the vinylidene-fluoride-based polymer can be obtained in high yield while maintaining satisfactory polymerization stability without using any fluorinated surfactant. The vinylidene-fluoride-based polymer composition according to the present invention comprises a vinylidene-fluoride-based polymer and a specific surfactant and contains no fluorinated surfactant, wherein the specific surfactant is contained in an amount of 10 ppm or larger but less than 100 ppm in terms of mass ppm of the solid components of the composition and has an HLB value of 10 or greater. The method for producing a vinylidene-fluoride-based polymer according to the present invention comprises emulsion-polymerizing specific monomers in an aqueous medium in the presence of a specific emulsifier and an initiator without using any fluorinated surfactant, the use amount of the emulsifier being 8.5 ppm or larger but less than 100 ppm in terms of mass ppm of the monomers.
More Like This:
Inventors:
SHIKE AYA (JP)
NAGASAWA YOSHIYUKI (JP)
SUZUKI YASUHIRO (JP)
NAGASAWA YOSHIYUKI (JP)
SUZUKI YASUHIRO (JP)
Application Number:
PCT/JP2020/011498
Publication Date:
October 08, 2020
Filing Date:
March 16, 2020
Export Citation:
Assignee:
KUREHA CORP (JP)
International Classes:
C08L27/16; C08L53/00; C08L71/02
Domestic Patent References:
| WO2018179696A1 | 2018-10-04 |
Foreign References:
| JP2006523758A | 2006-10-19 | |||
| JP2014508210A | 2014-04-03 | |||
| JP2014508209A | 2014-04-03 | |||
| JP2010512430A | 2010-04-22 | |||
| JPS5410987B1 | 1979-05-11 | |||
| JPS5112303B2 | 1976-04-17 |
Other References:
See also references of EP 3950827A4
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (JP)
Download PDF: