Patent ID: 6441084
Filing Date: 2002-08-27
Classification: C08K,H01B

Abstract:
A semi-conductive extrusion composition having a complex viscosity at 210Â° C. and 100 rad/sec from 6000 to 25000 poise and dispersion number from 50 to 700 psi comprising: (a) 75 to 95 weight percent, based on the total weight of the composition, of a base resin comprising linear low density polyethylene having a density from 0.890 to 0.925 g/cm3 and melt index from 0.3 to 15 g/10 min and (b) 5 to 25 weight percent, based on the total weight of the composition, of a carbon black mixture containing a major portion of a higher structure conductive carbon black and a minor proportion of a lower structure conductive carbon black.