POLYOLEFINPRESSMASSA MED BRETT SMAELTNINGSOMRAODE, FOERFARANDE FOER FRAMSTAELLNING DAERAV OCH DESS ANVAENDNING

摘要

Polyolefin moulding compositions which have a broad, bimodal or multimodal melting range in the DSC spectrum, with the maximum of the melting range being between 120 and 165 DEG C, are obtained by polymerisation or copolymerisation of at least two olefins to give polyolefins having a different melting point. The olefins have the formula RaCH = CHRb, and the catalyst system comprises an aluminoxane and at least two transition-metal components of the formula I IMAGE in which M1 is Zr, Hf or Ti.b