Title:
電力ケーブル絶縁体用ポリプロピレン樹脂
Document Type and Number:
Japanese Patent JP6719511
Kind Code:
B2
Abstract:
Provided is a polypropylene resin for an insulation layer of a power cable, which has excellent flexibility, heat distortion and low-temperature impact resistance and a high insulation breakdown strength to be suitably used for an insulation layer of an electrical power cable. In an exemplary embodiment, the polypropylene resin includes an ethylene-propylene impact copolymer consisting of a propylene homopolymer or an ethylene-propylene random copolymer (a), and ethylene-propylene copolymer rubber (b) polymerized therein, wherein the ethylene-propylene impact copolymer has a melting temperature (Tm) in a range of 145°C to 170°C, the content of a rubber component, measured by the content of a solvent extract (xylene solubles, room temperature) in the ethylene-propylene impact copolymer, is in a range of 35 wt% to 55 wt%, and the rubber component has two glass transition temperatures (Tg) in ranges of -25°C to -35°C and -45°C to -55°C.
Inventors:
Kim Bong Suk
Chun Yong Sung
Eun Eun
Chun Yong Sung
Eun Eun
Application Number:
JP2018145398A
Publication Date:
July 08, 2020
Filing Date:
August 01, 2018
Export Citation:
Assignee:
Hanwha Total Petrochemical Company Limited
International Classes:
C08F10/06; C08L23/10; H01B7/02; H01B9/00
Domestic Patent References:
| JP6025367A | ||||
| JP2013506742A | ||||
| JP2015021043A | ||||
| JP3205439A | ||||
| JP2008081644A |
Attorney, Agent or Firm:
Nagoya International Patent Service Corporation