In-situ reactor blend of a Ziegler-Natta catalysed, nucleated polypropylene and a metallocene catalysed polypropylene
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United States of America Patent
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Sep 19, 2017
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May 8, 2014
app pub date -
May 21, 2012
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Jun 15, 2011
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Abstract
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.
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