Claims
- 1. A catalyst composition for use in the polymerization of olefins comprising: (a) at least one polymerization catalyst designated (A) selected from the group consisting of a Ziegler-Natta catalyst, a Group IVA metal compound, a Group VA metal compound and a Group VIA metal compound, (A) not being a metallocene of formula I or II of b; and (b) a polymer of an olefin and at least one metallocene of the general formula I or II
- M�XR.sub.n !.sub.x Y.sub.p (I) ##STR2## wherein R is a monovalent or divalent 1-20 carbon hydrocarbyl, or a 1-20 carbon hydrocarbyl containing substituent oxygen, silicon, phosphorus, nitrogen or boron atoms with the proviso that at least one R group contains a polymerizable olefinic group containing 3 to 20 carbon atoms, and when there are two or more R groups present they may be the same or different, and when R is divalent it is directly attached to M, and replaces a Y ligand, wherein
- X is cyclopentadienyl or indenyl nucleus,
- M is a Group IVA metal,
- Y is a monovalent anionic ligand,
- and for formula I,
- n is an integer of 1 to 10
- x is either 1 or 2, and
- when x=1, p=0 to 3,
- when x=2, p=0 to 2
- and for formula II
- n and m are integers or 0 such that n+m.gtoreq.1, p=0-2, and
- Z is a radical selected from the group consisting of a C.sub.1 to C.sub.4 alkylene, a dialkyl germanium, an alkyl phosphine, an amine, bis-dialkyl silyl, and bis-dialkylgermanyl containing a hydrocarbyl group having 1 to 4 carbon atoms.
- 2. A catalyst composition according to claim 1 wherein M in general formula I or II is zirconium.
- 3. A catalyst composition according to claim 1 wherein the olefinic group is a terminal group.
- 4. A catalyst composition according to claim 1 wherein the polymerisation catalyst (A) and/or the metallocene complex are supported on an inorganic support.
- 5. A catalyst composition according to claim 4 wherein the inorganic support is selected from the group consisting of silica, alumina and a Group II metal halide.
- 6. A catalyst composition according to claim 1 wherein the polymerisation catalyst (A) and polymer are supported on an inorganic support.
- 7. A catalyst composition according to claim 1 further comprising a cocatalyst.
- 8. A catalyst composition according to claim 7 wherein the cocatalyst is a Group IA, IIA, IIB or IIIB organometallic compound.
- 9. A catalyst composition according to claim 8 wherein the cocatalyst is an organoaluminium compound.
- 10. A process for preparing the catalyst composition according to claim 1 characterised in that the metallocene complex, olefin and the polymerisation catalyst (A) are contacted together in the presence of an inert solvent and/or cocatalyst.
- 11. A process for preparing the catalyst composition according to claim 1 characterised in that polymer is dissolved in an inert solvent and deposited on the polymerisation catalyst (A) supported on an inorganic support.
- 12. A catalyst composition for use in the polymerization of olefins comprising: (a) at least one polymerization catalyst designated (A) not being a metallocene and selected from the group consisting of a Ziegler-Natta catalyst, a Group IVA metal compound, a Group VA metal compound, and a Group VIA metal compound, and (b) at least one metallocene selected from the group consisting of bis-(3-butenyl cyclo-penta-dienyl) zirconium dichloride and bis-(3-propenylcyclopentadienyl) zirconium dichloride.
- 13. A catalyst composition as claimed in claim 12 wherein said metallocene (b) is bis-(3-butenyl-cyclopentadienyl) zirconium dichloride.
- 14. A catalyst composition as claimed in claim 12 wherein said metallocene (b) is bis-(3-propenyl-cyclopentadienyl) zirconium dichloride.
Priority Claims (2)
Number |
Date |
Country |
Kind |
9218814 |
Sep 1992 |
GBX |
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9308078 |
Apr 1993 |
GBX |
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Parent Case Info
This application is a continuation of application Ser. No. 08/112,099 filed Aug. 26, 1993, now abandoned, for which the benefit of priority is claimed under 35 U.S.C. .sctn. 120.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
5071808 |
Antberg et al. |
Dec 1991 |
|
5077255 |
Welborn, Jr. |
Dec 1991 |
|
5169818 |
Antberg et al. |
Dec 1992 |
|
Foreign Referenced Citations (2)
Number |
Date |
Country |
372414 |
Jun 1990 |
EPX |
496193 |
Jul 1992 |
EPX |
Continuations (1)
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Number |
Date |
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Parent |
112099 |
Aug 1993 |
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