LOW SMOKE MODIFIED POLYPROPYLENE INSULATION COMPOSITIONS AND PROCESS FOR THE PREPARATION THEREOF

摘要

LOW SMOKE MODIFIED POLYPROPYLENE INSULATION COMPOSITIONS AND PROCESS FOR THE PREPARATION THEREOF A flame retardant insulation composition comprising the following components:- (a) in the range of from 5 to 40 per cent by weight of a hydrogenated monoalkylarene (A)-conjugated diene (B) block copolymer contain at at least two A blocks and at least one B block; (b) in the range of from 1 to 20 per cent by weight of a plasticizer; (c) in the range of from 1 to 40 per cent by weight of functionalized or not functionalized polypropylene; (d) in the range of from 10 to 85 per cent by weight of a hydrated inorganic filler which optionally has been surface treated with a coupling agent; (e) and optionally in the range of from 0.25 to 10 per cent by weight of a functionalized low molecular weight polypropylene wax, which composition in the absence of component (e) contains a hydrated inorganic filler which has been surface treated with a coupling agent, and process for the preparation thereof by combining components (a) to (d) and optionally (a) to (e).