INVESTIGATION ON THE SUPPORTED CATALYST SYSTEMSOF ALKOXYL TITANIUM CHLORIDE FORSTEREOSPECIFIC POLYMERIZATIONOF PROPYLENE Ⅲ. THE INFLUENCE OF DIFFERENT KINDS OF -OR GROUP ON THE CATALYTIC FUNCTION
He Da-wei, Chang Cui-ju, HU You-liang, XIE Guang-hua. INVESTIGATION ON THE SUPPORTED CATALYST SYSTEMSOF ALKOXYL TITANIUM CHLORIDE FORSTEREOSPECIFIC POLYMERIZATIONOF PROPYLENE Ⅲ. THE INFLUENCE OF DIFFERENT KINDS OF -OR GROUP ON THE CATALYTIC FUNCTION[J]. Acta Polymerica Sinica, 1982,(1):38-42.
He Da-wei, Chang Cui-ju, HU You-liang, XIE Guang-hua. INVESTIGATION ON THE SUPPORTED CATALYST SYSTEMSOF ALKOXYL TITANIUM CHLORIDE FORSTEREOSPECIFIC POLYMERIZATIONOF PROPYLENE Ⅲ. THE INFLUENCE OF DIFFERENT KINDS OF -OR GROUP ON THE CATALYTIC FUNCTION[J]. Acta Polymerica Sinica, 1982,(1):38-42.DOI:
supported on MgCl2-EB (EB stands for ethyl benzoate) for stereospeeific polymerization of propylene. In this paper
the influences of different kinds and number of -OR group on the catalytic function were reported. The result showed that all of these catalysts are in high activity for polymerization of propylene and high isotactic structure of polypropylene. The activity of n-C5H13OTiCl3 is the highest among them. Because of the steric hindrance
the increase of the number of --OR group leads to decrease catalytic activity and reguarity
When alkoxyl groups were introduced in the titanium active species
the molecular weight of the polymer was decreased obviously.