C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 23/04 (2006.01) C08L 23/16 (2006.01) C08L 31/02 (2006.01) H01B 3/44 (2006.01)
Patent
CA 2210057
The insulating formulation is a mixture of vulcanizable halogen free polyolefins with low smoke emission and fire resistance characteristics, for application in compounds to insulate and cover cables and electric conductors. The polyolefins are formulated with a hydrated inorganic charge, an alkoxysilane, a curing agent, an additive such as a process assistance agent and a combination of two antioxidants, a hindered phenol and a zinc-mercapto toluimidazole salt. The stabilized formulations with the antioxidant combination of phenol with steric hindrance and zinc 2 mercapto toluimidazole salt offer a good thermostability at 3000 hours at a temperature of 125°C and at 240 hours at a temperature of 165°C and does not stain or decolorate the copper surface when the composition is steam vulcanized.
Labastida Sanchez Fernando
Perez Sanchez Alfonso
Servicios Condumex S.a. de C.v.
Smart & Biggar
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