The relative reactivity of ethylene and propene in the first insertion steps of Ziegler-Natta copolymerization has been evaluated by analyzing via 13CNMR the %enriched end groups of copolymer fractionsofdifferentstereoregularity. Somepossibleinferencesconcerningreactionmechanismarereported
Syndiotactic polypropylene samples were synthesized under proper conditions using homogeneous cataly...
Three series of ethylene-propylene copolymers are made using the catalysts (1) rac-[Me2Si(2-Me-4-(1-...
In a previous letter, we proposed the synthesis and C-13 NMR characterization of propene/ethene-[1-C...
The relative reactivity of ethylene and propene in the first insertion steps of Ziegler-Natta copoly...
Some evidence has been reported in the literature suggesting that insertion of styrene in the ethyle...
In this paper, we report the results of a 150 MHz 13C NMR characterization of ethene-1- 13C/propene ...
The stereoregularity of polypropylene produced with C2-symmetric group 4 ansa-metallocene catalysts ...
In a previous letter, we proposed the synthesis and C-13 NMR characterization of propene/ethene-[1-C...
Syndiotactic polypropylene samples were synthesized under proper conditions using homogeneous cataly...
Three series of ethylene-propylene copolymers are made using the catalysts (1) rac-[Me2Si(2-Me-4-(1-...
In a previous letter, we proposed the synthesis and C-13 NMR characterization of propene/ethene-[1-C...
The relative reactivity of ethylene and propene in the first insertion steps of Ziegler-Natta copoly...
Some evidence has been reported in the literature suggesting that insertion of styrene in the ethyle...
In this paper, we report the results of a 150 MHz 13C NMR characterization of ethene-1- 13C/propene ...
The stereoregularity of polypropylene produced with C2-symmetric group 4 ansa-metallocene catalysts ...
In a previous letter, we proposed the synthesis and C-13 NMR characterization of propene/ethene-[1-C...
Syndiotactic polypropylene samples were synthesized under proper conditions using homogeneous cataly...
Three series of ethylene-propylene copolymers are made using the catalysts (1) rac-[Me2Si(2-Me-4-(1-...
In a previous letter, we proposed the synthesis and C-13 NMR characterization of propene/ethene-[1-C...