Patent ID: 8273268

Claim:
An electrically conductive polymer compound, comprising: (a) a matrix comprising a first polyolefin copolymer and a second polyolefin copolymer wherein the two polyolefin copolymers have different melt mass flow rates, and (b) electrically conductive particles dispersed in the matrix, wherein both copolymers are ethylene-propylene copolymer, wherein the melt mass flow rate of the first copolymer is about 30 to 90 lower in g/10 min, than the second copolymer when measured at 230° C. and 2.16 kg using ASTM D1238, and wherein the amount of the first copolymer ranges from about 30 to about 75 weight percent of the compound, wherein the amount of the second copolymer ranges from about 5 to about 45 weight percent of the compound, and wherein the electrically conductive particles ranges from about 5 to about 45 weight percent of the compound.