High modulus, high ductility polyolefins

Details High modulus, high ductility polyolefins High modulus, high ductility polyolefins

2002-10-09

2008-03-25

Rabago, Roberto (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S053000, C526S065000, C526S124900, C526S125300, C526S348000

Reexamination Certificate

active

07348381

ABSTRACT:
Provided herein are propylene polymers which are capable of being used as thermoplastic polyolefins just as they emerge from the reactor system described, without further compounding of components which substantially modify the physical properties of the polymers, as such compounding is required of polymers of the prior art. Polymers according to the invention unexpectedly possess both low temperature ductility and high flexural modulus, which properties were related in inverse proportion to one another in the polymers of the prior art.

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“Microstructure Distribution of Polypropylenes Obtained in the Presence of Traditional Phthalate/Silane and Novel Diether Donors: A toll for Understanding the Role of Electron Donors in MgCI2-supported Ziegler-Natta Catalysts” Morini et al. in the journal “Macromolecules” 1996, 29, 5770-57767/15/96.
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