Title:
STABLE MOLDING POWDER OF MODIFIED POLYTETRAFLUOROETHYLENE RESIN AND PROCESS FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2001/012682
Kind Code:
A1
Abstract:
A molding powder of a modified polytetrafluoroethylene resin containing 0.01 to 1 wt.% perfluorovinyl ether units, characterized in that (a) the amount of perfluorovinyl ether monomer remaining in the resin is up to 50 ppb, (b) the content of fluoride ions extractable from the resin is up to 100 ppb and (c) the resin has a melt viscosity at 380°C of 1 x 10?8¿ to 1 x 10?12¿ P. The molding powder can be processed in an unmelted state. It is stable and does not generate HF.
Inventors:
SHIMADA KAZUHIKO (JP)
SAWADA YASUHIKO (JP)
TANAKA TAKAYUKI (JP)
SAWADA YASUHIKO (JP)
TANAKA TAKAYUKI (JP)
Application Number:
PCT/JP2000/005202
Publication Date:
February 22, 2001
Filing Date:
August 03, 2000
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
SHIMADA KAZUHIKO (JP)
SAWADA YASUHIKO (JP)
TANAKA TAKAYUKI (JP)
SHIMADA KAZUHIKO (JP)
SAWADA YASUHIKO (JP)
TANAKA TAKAYUKI (JP)
International Classes:
C08F14/26; C08F8/00; C08F8/20; (IPC1-7): C08F8/22; C08F214/26
Foreign References:
| US4743658A | 1988-05-10 | |||
| JPH06340706A | 1994-12-13 | |||
| JPH06128335A | 1994-05-10 | |||
| JPH0228206A | 1990-01-30 | |||
| JPH0420507A | 1992-01-24 |
Attorney, Agent or Firm:
Aoyama, Tamotsu (Shiromi 1-chome Chuo-ku, Osaka-shi Osaka, JP)
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