Patent ID: 8425806
Filing Date: 2013-04-23
Classification: B82Y,C08J,H01L

Abstract:
1. A semiconductive polymer composition, comprising: (a) from 30 to 90 wt % of a polymer component; (b) from 10 to 60 wt % of carbon black; and (c) from 0 to 8 wt % additives, based on the total semiconductive polymer composition, and wherein the composition comprises, when measured in accordance with the Surface Smoothness Analysis (SSA) method using a tape sample prepared by extrusion of said semiconductive polymer composition using a single screw extruder (20 mm), a screw speed of 50 rpm and extruder die opening of 30 mm×1 mm, the tape sample having a thickness of 500±20 μm and a width of 18 mm, in which method a measurement area of 1 m