Patent ID: 7453043
Filing Date: 2008-11-18
Classification: H02G

Abstract:
1. A composition for manufacturing insulation materials of an electrical wire having a multilayer structure, which is used for manufacturing a first insulation coating layer made of a composition including a base resin, an antioxidant and a co-crosslinking agent so as to surround a conductor or a conductor bundle for an electrical wire; a second insulation coating layer made of a composition including a base resin polyvinylidene fluoride (PVDF), an antioxidant and a co-crosslinking agent so as to surround the first insulation coating layer, wherein the base resin in the composition for manufacturing the first insulation coating layer is at least one mixed resin selected from the group consisting of: (a1) a mixed resin in which 2 to 20% by weight of an ethylene-based copolymer resin is blended with 80 to 98% by weight of polyethylene; (a2) a mixed resin in which 2 to 20% by weight of a modified ethylene-based copolymer resin is blended with 80 to 98% by weight of polyethylene; (a3) a mixed resin in which 5 to 30% by weight of modified polyethylene is blended with 70 to 95% by weight of polyethylene; (a4) a mixed resin in which 2 to 30% by weight of a modified ethylene copolymer resin is blended with 50 to 80% by weight of polyethylene and 2 to 20% by weight of an ethylene copolymer resin; and (a5) a mixed resin in which 5 to 40% by weight of modified polyethylene is blended with 60 to 95% by weight of an ethylene copolymer resin.