LEITFÄHIGE POLYMERZUSAMMENSETZUNG UND VORRICHTUNG
A conductive polymer composition which has a resistivity at 20 DEG C. of at most 1.0 ohm-cm and a PTC anomaly of at least 104 contains at most 64% by volume of a crystalline polymeric component and at least 36% by volume of a particulate conductive filler. A preferred conductive filler is carbon bla...
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| Main Authors | , , |
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| Format | Patent |
| Language | German |
| Published |
15.11.2004
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| Edition | 7 |
| Subjects | |
| Online Access | Get full text |
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| Abstract | A conductive polymer composition which has a resistivity at 20 DEG C. of at most 1.0 ohm-cm and a PTC anomaly of at least 104 contains at most 64% by volume of a crystalline polymeric component and at least 36% by volume of a particulate conductive filler. A preferred conductive filler is carbon black having a DBP number of 60 to 120 cm3/100 g. Compositions of the invention, as well as other conductive polymer compositions are preferably prepared by a method in which the polymeric component and the filler are blended in a first step at a temperature greater than the melting temperature of the polymer, the mixture is then cooled, and the mixture is then mixed in a second step. The resulting composition has a PTC anomaly that is at least 1.2 times the PTC anomaly of the first mixture. |
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| AbstractList | A conductive polymer composition which has a resistivity at 20 DEG C. of at most 1.0 ohm-cm and a PTC anomaly of at least 104 contains at most 64% by volume of a crystalline polymeric component and at least 36% by volume of a particulate conductive filler. A preferred conductive filler is carbon black having a DBP number of 60 to 120 cm3/100 g. Compositions of the invention, as well as other conductive polymer compositions are preferably prepared by a method in which the polymeric component and the filler are blended in a first step at a temperature greater than the melting temperature of the polymer, the mixture is then cooled, and the mixture is then mixed in a second step. The resulting composition has a PTC anomaly that is at least 1.2 times the PTC anomaly of the first mixture. |
| Author | WARTENBERG, MARK, F LAHLOUH, JOHN, G TOTH, JAMES |
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| Notes | Application Number: AT19960929115T |
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| RelatedCompanies | TYCO ELECTRONICS CORPORATION |
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| Snippet | A conductive polymer composition which has a resistivity at 20 DEG C. of at most 1.0 ohm-cm and a PTC anomaly of at least 104 contains at most 64% by volume of... |
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| SubjectTerms | BASIC ELECTRIC ELEMENTS ELECTRICITY RESISTORS |
| Title | LEITFÄHIGE POLYMERZUSAMMENSETZUNG UND VORRICHTUNG |
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