Conductive coatings and foams for anti-static protection, energy absorption, and electromagnetic compatability

Abstract From the Canadian patent

Improved compositions are disclosed which are useful in providing a conductive layer of coating on a surface to provide protection against harmful electrostatic discharges. Also disclosed are compositions useful in absorbing and dissipating mechanical and electromagnetic energy and preventing electrostatic build-up; these compositions also provide electromagnetic compatability. The compositions contain elemental carbon and a polymeric matrix or binder. The improvement comprises employing a unique ground calcined coal-based coke which approaches graphite in terms of its performance as a conductive additive or pigment but which does not possess the disadvantages associated with the use of …