| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject composition having excellent flame retardancy and heat resistance, producing no toxic substances during combustion and useful for e.g. insulators for cables, by kneading a specific polyolefin-based polymer, a polyolefin-based polymer masterbatch compounded with a specific nonhalogen- based flame retardant, etc. SOLUTION: This composition is obtained by kneading (A) a polyolefin-based polymer with an organosilane grafted thereto, (B) polyolefin-based polymer masterbatch compounded with a nonhalogen-based flame retardant consisting mainly of a metal hydroxide such as magnesium hydroxide and (C) a crosslinking catalyst such as dibutyltin laurate, pref. so that the component A is at 5-95 wt.%, the component C is at 0.5-6 wt.% and the component B is at the rest based on the total amount of the composition. The component A can be obtained by reacting a polyolefin-based polymer such as an ethylene- vinyl acetate copolymer with an organosilane such as vinyltrimethoxysilane, in the presence of a radical generator such as benzoyl peroxide.
|
