Ethylene polymers or copolymers having improved insulating properties, compositions, and power cables made therefrom
申请人:NIPPON PETROCHEMICALS COMPANY, LIMITED
公开号:EP0463402A2
公开(公告)日:1992-01-02
The invention provides a polar group-containing ethylene polymer or copolymer having improved insulating properties, or a composition thereof characterized in that said polar group-containing ethylene polymer or copolymer contains 20 to 8000 ppm of a polar group having a dipolemoment of more than 0.8 debye. Provided is furthermore a power cable having an insulating layer which comprises a polar group-containing ethylene polymer or copolymer containing 20 to
本发明提供了一种具有更好绝缘性能的含极性基团的乙烯聚合物或共聚物,或其组合物,其特征在于所述含极性基团的乙烯聚合物或共聚物含有 20 至 8000 ppm 的极性基团,该极性基团的偶极矩大于 0.8 debye。本发明还提供了一种电力电缆,其绝缘层由含极性基团的乙烯聚合物或共聚物组成,该极性基团的偶极矩大于 0.8 德贝。