TETRAFLUOROETHYLENE BASED RESIN MOLDING MATERIAL EXCELLENT IN HIGH FREQUENCY ELECTRIC CHARACTERISTICS

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)

Application Number:

PCT/JP2001/006652

Publication Date:

February 14, 2002

Filing Date:

August 02, 2001

Export Citation:

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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)

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: