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Title:
POLYTETRAFLUOROETHYLENE AQUEOUS DISPERSION
Document Type and Number:
WIPO Patent Application WO/2019/194101
Kind Code:
A1
Abstract:
Provided is a polytetrafluoroethylene (referred to hereinafter as "PTFE") aqueous dispersion that has exceptional long-term dispersion stability, does not allow the PTFE in a final product to separate even when added to a liquid material such as a paint, can succeed in imparting the functions of PTFE in a desired final form, and has exceptional productivity economically. This PTFE aqueous dispersion is characterized by containing 10-70% by mass of fine particles of PTFE that have a primary particle diameter of 0.03-0.3 μm and a number-average molecular weight Mn of 10,000-30,000, also containing 0.5-20% by mass of a dispersant relative to the fine particles of PTFE, the foam volume ratio being less than 10 vol%, and the average particle diameter by dynamic light scattering being less than 300 nm.

Inventors:
ABE HIROSHI (JP)
SUZUKI TAKANORI (JP)
MATSUSHIMA RYOSUKE (JP)
MOROOKA YUMI (JP)
FUJISAWA KIYOSHI (JP)
SHINMURA YUKAKO (JP)
Application Number:
JP2019/014130
Publication Date:
October 10, 2019
Filing Date:
March 29, 2019
Export Citation:
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Assignee:
MITSUBISHI PENCIL CO (JP)
International Classes:
C08L27/18; C08J3/03; C08L101/00; C09D5/02; C09D7/65; C09D127/18; C09D201/00
Domestic Patent References:
WO2009020187A12009-02-12
Foreign References:
JP2013173837A2013-09-05
JP2009001745A2009-01-08
JP2010180364A2010-08-19
JPH01289896A1989-11-21
JP2006063140A2006-03-09
JP2019044066A2019-03-22
Attorney, Agent or Firm:
FUJIMOTO Eisuke et al. (JP)
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