NITROGEN CONTAINING EXTERNAL DONOR SYSTEM FOR PROPYLENE POLYMERIZATION

摘要

THE PRESENT INVENTION DISCLOSES NEW CLASS OF NITROGEN CONTAINING EXTERNAL DONOR SYSTEMS. THESE DONOR SYSTEMS ARE USED IN TITANIUM SUPPORTED ON MAGNESIUM DICHLORIDE PRO-CATALYST SYSTEM FOR POLYMERIZATION OF PROPYLENE. THE EXTERNAL DONOR SYSTEMS OF THE PRESENT INVENTION IN COMBINATION WITH SILANE SHOW THE KINETICS CONTROL FOR DIESTER CATALYST POLYMERIZATION PROCESS ALONG WITH STEREO REGULARITY CONTROL OF PRODUCT. THE POLYPROPYLENE PRODUCED USING NITROGEN CONTAINING EXTERNAL DONOR SYSTEMS OF THE PRESENT INVENTION HAVE BROAD MOLECULAR WEIGHT DISTRIBUTION.