| abstract |
The method for making extra-high voltage cable insulation is improved by the use of a composition comprising: (A) 95 to 99.9% ethylene-based polymer, in % by weight, based on the weight of the composition; ( B) 0.2 to 2.5% peroxide; (C) 0.01 to 0.5% sulfur-containing primary antioxidant having at least one -S(CH 2 ) 2 CO 2 R group, where R is C6 to C20 Alkyl; (D) 0.001 to 0.009% phosphorus-containing secondary antioxidant that does not contain a -S( CH2 ) 2CO2R group, where R is a C6 to C20 alkyl; (E) optionally and (F) optionally, a phenolic third antioxidant that does not contain a -S( CH2 ) 2CO2R group, wherein R is a C6 to C20 alkyl group. |