Claims
- 1. 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; (3) 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 (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) an organometallic compound catalyst component.
- 2. The olefin polymerization catalyst as claimed in claim 1, wherein the organosilicon compound (C) is represented by the following formula (c-ii):
- 3. The olefin polymerization catalyst as claimed in claim 1, wherein the compound (D) having at least two ether linkages present through plural atoms is represented by the following formula:
- 4. An olefin polymerization catalyst (2a) formed from:
(Ia-2) a prepolymerized catalyst component obtained by prepolymerizing an olefin of 2 or more carbon atoms in the presence of (A) a solid titanium catalyst component comprising magnesium, titanium, halogen and a polycarboxylic ester selected from the group consisting of compounds of the formulas 14wherein R1 is a hydrocarbon group which may have a substituent, R2, R3, R4, R5 and R6 are hydrogen or hydrocarbon group which may be substituted, wherein any substituent group contains N, O or S atom, and R3 and R4 may be linked to each other to form a cyclic structure; (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 (c-i) wherein 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) an organometallic compound catalyst component.
- 5. The olefin polymerization catalyst as claimed in claim 4, wherein the organosilicon compound (C) is represented by the following formula
- 6. The olefin polymerization catalyst as claimed in claim 4, wherein the compound (D) having at least two ether linkages present through plural atoms is represented by the following formula:
Priority Claims (5)
Number |
Date |
Country |
Kind |
201388/1993 |
Aug 1993 |
JP |
|
201389/1993 |
Aug 1993 |
JP |
|
204309/1993 |
Aug 1993 |
JP |
|
204310/1993 |
Aug 1993 |
JP |
|
204311/1993 |
Aug 1993 |
JP |
|
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This is a division of application Ser. No. 08/730,930, filed Oct. 16, 1996, now allowed; which is a division of application Ser. No. 08/690,054, filed Jul. 31, 1996, which issued as U.S. Pat. No. 5,618,886; which is a continuation of application Ser. No. No. 08/289,635, filed Aug. 12, 1994.
Divisions (2)
|
Number |
Date |
Country |
Parent |
08730930 |
Oct 1996 |
US |
Child |
09878426 |
Jun 2001 |
US |
Parent |
08690054 |
Jul 1996 |
US |
Child |
08730930 |
Oct 1996 |
US |
Continuations (1)
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Number |
Date |
Country |
Parent |
08289635 |
Aug 1994 |
US |
Child |
08690054 |
Jul 1996 |
US |