EP0330926A2
Expired / Lapsed
EP
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Composite material of low permittivity
Assignee: Junkosha Co Ltd
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Filing: 1989-02-17
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Granted: —
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Expires: 2009-02-17
Abstract
Abstract Composite material of low permittivity consisting of a base material comprising polymer material and particles of thermofusing fluororesin dispersed therein.
Inventors
- 👤 Takeshi Hoshiko
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 03:37
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/32; C08J9/04; C08J9/06; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/18; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/443; C08J2327/00; C08J2327/02; C08J2327/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
24 words
Composite material of low permittivity characterized in that it consists of a base material comprising polymer material and particles of thermofusing fluororesin dispersed therein.
Claim 2
Dependent Claim
24 words
Composite material of low permittivity characterized in that it consists of a base material comprising polymer material and particles of thermofusing fluororesin dispersed therein.
Claim 3
Dependent Claim
24 words
Composite material according to claim 1 characterized in that the particles of thermofusing fluororesin are obtainable by grinding a foamed body of thermofusing fluororesin.
Claim 4
Dependent Claim
37 words
Composite material according to claim 1 or 2, characterized in that said thermofusing fluororesin is selectred from the group of tetrafluoroethylene-perfluoroalkylvinylether-copolymer, ethylene tetra fluoride propylene hexafluoride copolymer-resin, ethylene-ethylene tetrafluoride copolymer resin and ethylene-ethylene chloride trifluoride copolymer resin.
Claim 5
Dependent Claim
18 words
Composite material according to claim 1 or 2 characterized in that said base material is rubber or plastic.
Claim 6
Dependent Claim
18 words
Composite material according to anyone of claims 1-3, characterized in that said base material is ethylene tetrafluoride resin.
Claim 7
Dependent Claim
37 words
Composite material according to claim 2 and anyone of claims 3-5, characterized in that the average diameter of the particles of said thermofusing fluororesin material is more than twice the average bubble diameter of the foamed body.
Claim 8
Dependent Claim
41 words
Composite material according to claim 2 and anyone of claims 3-6, characterized in that the ground thermofusing fluororesin material contains a foaming agent which has been caused to foam after the ground thermofusing fluororesin has been mixed with the polymer material.
Claim 9
Dependent Claim
18 words
Composite material according to claim 7, characterized in that the foaming agent is covered by the thermofusing fluororesin.
Claim 10
Dependent Claim
17 words
Composite material according to claims 7 or 8 characterized in that the foaming agent is heat resistant.
Claim 11
Dependent Claim
37 words
Method for the production of a composite material according to anyone of claims 1-9, characterized in that a foamed body of thermofusing fluororesin material is ground and mixed with powder of polymer-material which mixture is then preformed.
Claim 12
Dependent Claim
18 words
Method according to claim 10, characterized in that said foamed body of thermofusing fluororesin contains a foaming agent.
Claim 13
Dependent Claim
26 words
Method according to claim 11, characterized in that said mixture of thermofusing fluororesin material and polymermaterial is caused to foam by means of the foaming agent.
Claim 14
Dependent Claim
16 words
Method according to claim 11, characterized in that the mixture is caused to foam by burning.
References Cited (Backward Citations)
No citation records indexed.
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