Electrical insulating composition based on polyolefin containing dye additives as voltage stabilizers

摘要

A voltage stabilized solid polyolefin dielectric composition is disclosed. The dielectric composition comprises a polyolefin containing a voltage stabilizing amount of an additive selected from the class of dyes identified in the Color Index as being of the solvent type possessing either an azo or a quinoid type structure, or having a xanthene structure exhibiting fluorescence. The solvent dyes must be soluble in or melt miscible with the polyolefin. The solvent dyes must also be stable at the processing temperature and under the conditions of use.