Title:
PROCESS FOR PRODUCING TETRAFLUOROETHYLENE POLYMER
Document Type and Number:
WIPO Patent Application WO/2002/072646
Kind Code:
A1
Abstract:
A process for producing a tetrafluoroethylene polymer which comprises polymerizing tetrafluoroethylene having a content of impurities (e.g., saturated compounds such as CH¨2?F¨2? and CHF¨3? and unsaturated compounds such as CF¨2?=CFH, CF¨2?=CH¨2?, CF¨2?=CFCl, and CF¨2?=CHCl) of 100 ppm or lower in the presence of an aqueous medium and a polymerization initiator. By the process, PTFE can be obtained which can be evenly stretched in a high stretch ratio and has excellent suitability for fibrillation and a high breaking strength.
Inventors:
KOBAYASHI SHIGEKI (JP)
HOSHIKAWA JUN (JP)
KATO KAZUO (JP)
KAMIYA HIROKI (JP)
HIRAI HIROYUKI (JP)
HOSHIKAWA JUN (JP)
KATO KAZUO (JP)
KAMIYA HIROKI (JP)
HIRAI HIROYUKI (JP)
Application Number:
PCT/JP2002/001876
Publication Date:
September 19, 2002
Filing Date:
February 28, 2002
Export Citation:
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)
ASAHI GLASS FLUOROPOLYMERS CO (JP)
KOBAYASHI SHIGEKI (JP)
HOSHIKAWA JUN (JP)
KATO KAZUO (JP)
KAMIYA HIROKI (JP)
HIRAI HIROYUKI (JP)
International Classes:
C08F2/22; C08F2/16; C08F14/26; C08F114/26; (IPC1-7): C08F14/26; C08F2/16
Foreign References:
JPH03223219A | 1991-10-02 | |||
JPS6440507A | 1989-02-10 |
Other References:
See also references of EP 1291367A4
Attorney, Agent or Firm:
Senmyo, Kenji (38 Kanda-Higashimatsushitach, Chiyoda-ku Tokyo, JP)
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