Title:
TETRAFLUOROETHYLENE BASED RESIN MOLDING MATERIAL EXCELLENT IN HIGH FREQUENCY ELECTRIC CHARACTERISTICS
Document Type and Number:
WIPO Patent Application WO/2002/012392
Kind Code:
A1
Abstract:
A tetrafluoroethylene based resin molding material excellent in high frequency electric characteristics which provides a formed product having a relative dielectric constant of 2.2 or less and a dielectric loss tangent of 1.60 x 10?-4¿ or less at 12 GHz and a standard specific gravity of 2.192 or more and less than 2.3. AS the tetrafluoroethylene based resin, use is preferably made of a homopolymer of terafluoroethylene or a copolymer of 99.9 to 99.9999 mole % of terafluoroethylene and 0.0001 to 0.1 mole % of a specific fluoromonomer. The tetrafluoroethylene based resin molding material has good electric characteristics particularly a low dielectric loss tangent also in a microwave region, can be extruded by a reduced extrusion pressure due to its low molecular weight and can provide a formed product excellent in smoothness of its surface, and thus is useful as a material for use in the equipment using a microwave such as a device for satellite communication, a portable telephone base station and the like, for example, as a coating material for a coaxial cable.
Inventors:
ONO MAKOTO (JP)
ASANO MICHIO (JP)
NANBA YOSHINORI (JP)
KASAI SHUNJI (JP)
YOSHIMOTO HIROYUKI (JP)
YANO SHINICHI (JP)
SHIMIZU TETSUO (JP)
ASANO MICHIO (JP)
NANBA YOSHINORI (JP)
KASAI SHUNJI (JP)
YOSHIMOTO HIROYUKI (JP)
YANO SHINICHI (JP)
SHIMIZU TETSUO (JP)
Application Number:
PCT/JP2001/006652
Publication Date:
February 14, 2002
Filing Date:
August 02, 2001
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
ONO MAKOTO (JP)
ASANO MICHIO (JP)
NANBA YOSHINORI (JP)
KASAI SHUNJI (JP)
YOSHIMOTO HIROYUKI (JP)
YANO SHINICHI (JP)
SHIMIZU TETSUO (JP)
ONO MAKOTO (JP)
ASANO MICHIO (JP)
NANBA YOSHINORI (JP)
KASAI SHUNJI (JP)
YOSHIMOTO HIROYUKI (JP)
YANO SHINICHI (JP)
SHIMIZU TETSUO (JP)
International Classes:
B29C67/04; C08J3/16; C08F14/26; C08F259/08; C08J5/00; C08L27/18; C09D127/18; H01B3/44; H01B11/18; (IPC1-7): C08L27/18
Foreign References:
JPS374643B1 | 1962-06-15 | |||
JPS6356532A | 1988-03-11 | |||
JPH02220389A | 1990-09-03 | |||
JPH07272801A | 1995-10-20 |
Other References:
See also references of EP 1306407A4
Attorney, Agent or Firm:
Asahina, Sohta (Tanimachi 2-chome Chuo-ku Osaka-shi, Osaka, JP)
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