High modulus, high ductility polyolefins

C - Chemistry – Metallurgy – 08 – L

Patent

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C08L 23/12 (2006.01) B29C 45/00 (2006.01) C08F 2/02 (2006.01) C08F 2/34 (2006.01) C08F 4/642 (2006.01) C08F 10/06 (2006.01) C08F 210/06 (2006.01) C08F 210/16 (2006.01) C08F 297/08 (2006.01) C08L 23/10 (2006.01) C08L 23/16 (2006.01) C08F 110/06 (2006.01)

Patent

CA 2463561

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.

L'invention concerne des polymères de propylène qui peuvent être utilisés comme polyoléfines thermoplastiques au moment où ils sortent du système de réacteur décrit, sans qu'il soit nécessaire de procéder à un compoundage supplémentaire de composants qui modifient sensiblement les propriétés physiques des polymères, lequel compoundage est nécessaire pour les polymères de la technique antérieure. Il est surprenant de noter que les polymères selon l'invention présentent une ductilité à basse température et un module d'élasticité en flexion élevé alors que, dans les polymères de la technique antérieure, la proportion de ces propriétés était inversée.

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