Tie based on grafted polyethylene and on high-impact or crystal polystyrene with cohesive failure

摘要

The invention relates to a tie comprising a blend of grafted polyethylene (PE), of grafted or ungrafted high-impact or crystal polystyrene and optionally of ungrafted PE. The grafted PE is preferably composed of two different cografted PEs. This tie is of use in the manufacture of multilayer structures intended for the field of Civil Engineering Works (CEW), more particularly for the fields of aluminium panels, of multilayer pipes, but also for the field of packaging.