Electrically conductive flexible compositions, and materials and methods for making same
US6533963B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Feb 12, 1999 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Feb 12, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/095
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electroconductive composition comprising an elastic matrix material and particulate filler material dispersed therein, the particulate filler material comprising fiber particles coated with a conductive material and spheroidal particles coated with a conductive material, the dispersion being such that the fiber-containing particulate filler and the spheroid-containing particulate filler are substantially interspersed, the particulate filler being present in an amount such that the conductive-material coated particles are in electroconductive relationship and such that the composition possesses enhanced flexibility, the conductive material being present in an amount sufficient that the composition has a decreased resistivity. The invention also encompasses a method of preparing these compositions comprising the steps of compounding said filler into a precursor of said flexible matrix material thereby dispersing said fillers throughout the matrix material, and curing the precursor to form the matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.