Patent ID: 6537942
Filing Date: 2003-03-25
Classification: C08F,Y02P,Y10S

Abstract:
An olefin polymerization catalyst (2) formed from:(I-2) a contact product obtained by contacting in the absence of polymerizable olefin monomer: (A) a solid titanium catalyst component comprising magnesium, titanium, halogen and an organic ester as electron donor; (B) an organometallic compound catalyst component and (D) a compound having at least two ether linkages spaced by plural atoms; (II-2) (C) an organosilicon compound represented by the following formula (c-i) Ra2Si (ORb)2 â€ƒâ€ƒ(c-i) Ra is a secondary or tertiary hydrocarbon group, and both Ra may be the same or different, Rb is a hydrocarbon group of 1 to 4 carbon atoms and both ORb may be the same or different; and, optionally, (III-2) an organometallic compound catalyst component.