Abstract
AbstractCopolymers of propene and ethene‐based macromers have been prepared in a direct copolymerization. First macromers in a range of 3000–11600 g/mol were synthesized by varying the polymerization temperature and ethene concentration with the metallocene catalyst [(CH3)2CCp2]ZrCl2/MAO. These vinyl terminated ethene oligomers were copolymerized with propene by Cs symmetric catalyst [Ph2C(Cp)(Flu)]ZrCl2 to a long‐chain branched syndiotactic polypropylene. The LCB‐sPP was separated from the bimodal product by a fractional crystallization with p‐xylene and 2 ‐ ethoxy ethanol at 130 °C. A detailed analysis of the purified copolymer was given by GPC, DSC and 13C NMR spectroscopy.
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