Electrical devices comprising conductive polymer blend compositions
US6479575B1 · kind B1 · utility
9Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1999 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Apr 19, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L101/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Conductive polymer blend composites exhibiting PTC (positive temperature coefficient of resistance) behavior, comprising at least two types of polymers and preferably at least two types of conductive particulate materials (e.g., carbon blacks), and electrical devices containing such composites. The two polymers are selected to have different melt flow index values, while the two particulate materials are selected to have different average particle sizes and DBP values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.