Patent ID: 8426534
Filing Date: 2013-04-23
Classification: C08F

Abstract:
1. A method for preparing impact polymers of propylene in a single reactor, that comprises the steps of: a) providing a support; b) depositing on the support a first metallocene catalyst component capable of producing an isotactic homopolymer of propylene having an isotactic index of at least 97% in order to produce a polypropylene matrix, wherein the first metallocene catalyst component is CMe c) depositing on the same, or another, support a second metallocene component in order to prepare a rubber phase, wherein the second metallocene catalyst component is Ph d) activating the loaded support(s) with an activating agent having an ionising action before or after steps b) and c); e) injecting the loaded and activated support(s) into the reactor; f) injecting propylene into the reactor; g) maintaining under polymerisation conditions; and h) retrieving an impact polymer of propylene devoid of ethylene comonomer.