Heterophasic propylene copolymer with improved properties for injection molding applications
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United States of America Patent
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Nov 12, 2013
Grant Date -
Jul 21, 2011
app pub date -
Jul 2, 2009
filing date -
Jul 3, 2008
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Abstract
The present invention concerns a heterophasic propylene copolymer of high melt flow for injection molding, which comprise a propylene polymer matrix and a rubber. The heterophasic propylene copolymers of the present invention are characterized by a high viscosity of the rubber phase and a well-defined ratio of the intrinsic viscosities of the rubber phase and the propylene polymer matrix, thus resulting in improved mechanical properties. The present invention further relates to a process for the production of such heterophasic propylene copolymers, their use and articles produced with them.
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