Patent ID: 9115273
Filing Date: 2015-08-25
Classification: C08L,H01B

Abstract:
1. A composition for manufacturing halogen-free, flame retardant, low smoke emission, thermoplastic insulations showing good electrical properties in water, comprising: a) a mixture of at least two polyolefin-based polymer resins selected from the group consisting of or optionally, combinations thereof, comprising from about 5 to about 95 phr of a first soft and flexible resin and from about 5 to about 95 phr of a second tensile strength and heat-resistance provider resin; b) from about 0.2 to about 50 phr of at least one compatibilizing and/or coupling agent; c) from about 40 to about 270 phr of at least one flame retardant agent; d) from about 0.1 to about 15 phr of at least one antioxidant agent; and e) from about 0.2 to about 5 phr of at least one lubricant agent; wherein the second tensile strength and heat resistance provider resin is selected from high density polyethylene-type resins high density polyethylene-type resins (HDPE); polypropylene-type resins (PP); ethylene-propylene copolymer-type resins (EP); or combinations thereof; said composition providing good electrical performance of insulation even after long term water immersion as shown by the water absorption electric method (EMA test) according to NMX-J-040 and UL-2556 (capacitance and relative permittivity); mechanical performance and flame test compliance.