AQUEOUS POLYTETRAFLUOROETHYLENE DISPERSION

Title:

AQUEOUS POLYTETRAFLUOROETHYLENE DISPERSION

Document Type and Number:

WIPO Patent Application WO/2017/094798

Kind Code:

A1

Abstract:

Provided is an aqueous polytetrafluoroethylene dispersion which has excellent mechanical stability, while being not susceptible to foaming. An aqueous polytetrafluoroethylene dispersion which contains: 15-70% by mass of polytetrafluoroethylene particles having an average primary particle diameter of 0.1-0.5 μm; 0.1-20,000 ppm of a fluorine-containing emulsifying agent that is selected from among fluorine-containing carboxylic acids, which may have an ether oxygen atom, while having 4-7 carbon atoms, and salts thereof relative to the mass of the polytetrafluoroethylene particles; 1-20 parts by mass of a nonionic surfactant represented by R1-O-A-H (wherein R1 represents an alkyl group having 8-18 carbon atoms and A represents a polyoxyalkylene chain) per 100 parts by mass of the PTFE particles; 0.01-3.0 parts by mass of a compound represented by formula (2) (wherein R represents an alkyl group having 2-4 carbon atoms, n represents 1 or 2, and each of m1 and m2 represents an average repeating number of oxyethylene groups, with (m1 + m2) being 1-6) per 100 parts by mass of the polytetrafluoroethylene particles; and water.

Inventors:

KOBAYASHI SHIGEKI (JP)
NAGAI HIROKI (JP)
HIGUCHI SHINYA (JP)
TANAKA AKIKO (JP)
TAKAZAWA MASAHIRO (JP)
MORGOVAN-ENE ARIANA CLAUDIA (GB)
WADE ANTHONY EUGENE (GB)
CAINE DIANE (GB)

Application Number:

PCT/JP2016/085617

Publication Date:

June 08, 2017

Filing Date:

November 30, 2016

Export Citation:

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Assignee:

ASAHI GLASS CO LTD (JP)
AGC CHEMICALS EUROPE LTD (GB)

International Classes:

C08L27/18; C08J3/03; C08K5/06; C08K5/095; C08L71/02; C09D5/02; C09D7/12; C09D127/18

Domestic Patent References:

WO2007046482A1	2007-04-26
WO2011046186A1	2011-04-21

Foreign References:

JP2009161616A	2009-07-23
JP2006523758A	2006-10-19

Other References: