PROCESS FOR PRODUCING HIGH-STRENGTH TETRAFLUOROETHYLENE POLYMER

Title:

PROCESS FOR PRODUCING HIGH-STRENGTH TETRAFLUOROETHYLENE POLYMER

Document Type and Number:

WIPO Patent Application WO/2002/083744

Kind Code:

A1

Abstract:

A process for producing a tetrafluoroethylene polymer which comprises polymerizing tetrafluoroethylene in an aqueous medium in the presence of a water-soluble polymerization initiator, wherein the water used in the polymerization has been regulated so as to have a TOC of 100 ppb or lower and/or an electrical conductivity of 1.0 $g(m)S/cm or lower. In the process, the rate of polymerization of tetrafluoroethylene is less apt to decrease or fluctuate. The tetrafluoroethylene polymer obtained is less apt to have reduced material properties.

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Inventors:

KOBAYASHI SHIGEKI (JP)
HOSHIKAWA JUN (JP)
KATO KAZUO (JP)
KAMIYA HIROKI (JP)
HIRAI HIROYUKI (JP)

Application Number:

PCT/JP2002/003212

Publication Date:

October 24, 2002

Filing Date:

March 29, 2002

Export Citation:

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Assignee:

ASAHI GLASS CO LTD (JP)
ASAHI GLASS FLUOROPOLYMERS CO (JP)
KOBAYASHI SHIGEKI (JP)
HOSHIKAWA JUN (JP)
KATO KAZUO (JP)
KAMIYA HIROKI (JP)
HIRAI HIROYUKI (JP)

International Classes:

C08F2/16; C08F14/26; C08F2/22; (IPC1-7): C08F2/16; C08F14/26

Foreign References:

JPH1036454A	1998-02-10
JPS6020911A	1985-02-02
JPH04226512A	1992-08-17
JPH054051A	1993-01-14
JPH0770211A	1995-03-14

Other References: