IN-SITU REACTOR BLEND OF A ZIEGLER-NATTA CATALYSED, NUCLEATED POLYPROPYLENE AND A METALLOCENE CATALYSED POLYPROPYLENE

摘要

Propylene homo- or copolymer composition comprising an in-situ reactor blend of a Ziegler-Natta catalysed, nucleated polypropylene (znPP) and a metallocene catalysed polypropylene (mcPP), in a weight ratio in the range of 6:94 to 50:50 (wt% znPP: wt% mcPP), preferably in the range of 10:90 to 44:56 (wt% znPP: wt% mcPP), having an excellent balance between optical properties, mechanical properties, thermal properties and processing properties; a process for its production and the use of a mixture of a Ziegler-Natta catalyst system and a metallocene catalyst system.