Conductive polymer compositions
First Claim
Patent Images
1. A conductive polymer composition which comprises(1) a polymeric component;
- (2) a particulate conductive filler component comprising carbon black which is dispersed in the polymeric component;
(3) an arc-controlling agent which (i) comprises a particulate compound which, when heated in the absence of air, decomposes to give H2 O, CO2, or N2, and (ii) is present at 7 to 25% by volume of the composition; and
(4) a lubricant or coupling agent for the arc-controlling agent, said lubricant or coupling agent comprising an organo-silicon compound, a stearate or a titanate which is (i) precoated onto the arc-controlling agent, and (ii) if the lubricant or coupling agent is not pre-coated onto the arc-controlling agent, the lubricant or coupling agent is present at at least 0.5% by volume of the composition.
4 Assignments
0 Petitions
Accused Products
Abstract
Conductive polymer compositions, particularly PTC compositions, which contain alumina trihydrate, or another arc-controlling agent, and a lubricant or coupling agent. Advantages which can result from use of the lubricant or coupling agent include improved PTC behavior and improved adhesion to metal conductors, in particular metal foils and solid metal wires.
131 Citations
8 Claims
-
1. A conductive polymer composition which comprises
(1) a polymeric component; -
(2) a particulate conductive filler component comprising carbon black which is dispersed in the polymeric component; (3) an arc-controlling agent which (i) comprises a particulate compound which, when heated in the absence of air, decomposes to give H2 O, CO2, or N2, and (ii) is present at 7 to 25% by volume of the composition; and (4) a lubricant or coupling agent for the arc-controlling agent, said lubricant or coupling agent comprising an organo-silicon compound, a stearate or a titanate which is (i) precoated onto the arc-controlling agent, and (ii) if the lubricant or coupling agent is not pre-coated onto the arc-controlling agent, the lubricant or coupling agent is present at at least 0.5% by volume of the composition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
Specification