POLYMERIC INSULATING COMPOSITION AND ELECTRIC WIRE OR CABLE COVERED WITH SUCH COMPOSITION Russian patent published in 2005 - IPC

FIELD: electrical engineering.

SUBSTANCE: proposed polymeric insulating composition given in description of invention together with description of cables and wires covered with such composition to ensure their excellent performance in service has 60 to 90 mass percent of copolymer A of ethylene and α-olefin produced by copolymerization with aid of concentric catalyst and 40 to 10 mass percent of polyolefin resin B other than copolymer A and includes polyolefin incorporating grafted substituents with dipole moment 4 D or higher. One of alternative compositions uses semiconducting composition as semiconductor layer. In particular cases ethylene and α-olefin copolymer is produced by polymerization with aid of Ziegler-Natta catalyst.

EFFECT: facilitated production.

8 cl, 2 tbl