AQUEOUS POLYTETRAFLUOROETHYLENE DISPERSION

Title:

AQUEOUS POLYTETRAFLUOROETHYLENE DISPERSION

Document Type and Number:

WIPO Patent Application WO/2018/097141

Kind Code:

A1

Abstract:

Provided is an aqueous polytetrafluoroethylene dispersion which has excellent mechanical stability and does not easily foam. The aqueous polytetrafluoroethylene dispersion contains: 15-70 mass% of polytetrafluoroethylene particles having an average primary particle size of 0.1-0.5 µm; 0.1-20,000 ppm of a fluorine-containing emulsifier, selected from among a C4-7 fluorine-containing carboxylic acid, which may have an etheric oxygen atom, and a salt thereof, with respect to the mass of the polytetrafluoroethylene particles; 1-20 parts by mass of a nonionic surfactant, represented by R1-O-A-H (R1 is a C8-18 alkyl group, and A is a polyoxyalkylene chain), with respect to 100 parts by mass of the polytetrafluoroethylene particles; 0.15-3 parts by mass of a polyether polysiloxane copolymer with respect to 100 parts by mass of the polytetrafluoroethylene particles; and water.

Inventors:

KOBAYASHI SHIGEKI (JP)
TAKAZAWA MASAHIRO (JP)
MORGOVAN-ENE ARIANA CLAUDIA (GB)
WADE ANTHONY EUGENE (GB)
CAINE DIANE (GB)

Application Number:

PCT/JP2017/041866

Publication Date:

May 31, 2018

Filing Date:

November 21, 2017

Export Citation:

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Assignee:

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

International Classes:

C08L27/18; C08K5/06; C08K5/095; C08K5/098; C08L71/00; C08L83/12

Domestic Patent References:

WO2017094798A1	2017-06-08
WO2007046482A1	2007-04-26
WO2008064965A1	2008-06-05
WO2016166979A1	2016-10-20

Foreign References:

JP2009161616A	2009-07-23
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Other References: