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A semiconducting resin composition comprises: (A) 100 to 40 parts of a modified ethylene-vinyl acetate copolymer prepared by graft processing of 100 parts of an ethylene-vinyl acetate copolymer of a vinyl acetate content of less than 35 percent with 25 to 200 parts of an aromatic vinyl monomer; (B)

A semiconducting resin composition comprises: (A) 100 to 40 parts of a modified ethylene-vinyl acetate copolymer prepared by graft processing of 100 parts of an ethylene-vinyl acetate copolymer of a vinyl acetate content of less than 35 percent with 25 to 200 parts of an aromatic vinyl monomer; (B) 0 to 60 parts of a rubber; and (C) 3 to 150 parts of a carbon black with respect to 100 parts of the above described components (A) and (B), all quantities in “parts”and “percent”being by weight. A composition of this character has excellent characteristics for its use in forming the outer semiconducting layer of polyethylene-insulated cables.

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A semiconducting resin composition useful as a semiconducting layer of an insulated electric cable comprising: (A) 100 to 40 parts of a modified ethylene-vinyl acetate copolymer which is a product of graft processing of 100 parts of an ethylene-vinyl acetate copolymer of a vinyl acetate content of l

A semiconducting resin composition useful as a semiconducting layer of an insulated electric cable comprising: (A) 100 to 40 parts of a modified ethylene-vinyl acetate copolymer which is a product of graft processing of 100 parts of an ethylene-vinyl acetate copolymer of a vinyl acetate content of less than 35 percent with 25 to 200 parts of an aromatic vinyl monomer; (B) 0 to 60 parts of a rubber; and (C) 3 to 150 parts of an electrically conductive carbon black selected from the group consisting of furnace black, acetylene black, and ketjen black with respect to 100 parts of the above described components (A) and (B), all quantities in “parts”and “percent”being by weight.