US4383939A
Expired / Lapsed
US
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Polymerization catalyst
Assignee: BP Chemicals Ltd
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Filing: 1982-01-27
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Granted: 1983-05-17
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Expires: 2002-01-27
Abstract
Abstract A supported Ziegler catalyst component prepared by (A) reacting a refractory oxide support material having surface --OH groups, for example silica, with halogen-containing transition metal compound, eg titanium tetrachloride, (B) reacting the product with an organometallic compound, for example triethyl aluminium and (C) reacting with transition metal compound in which vanadium is present, for example vanadyl chloride. The catalyst component is conventionally activated with organometallic compound and can be used to polymerize 1-olefins, for example ethylene.
Inventors
- 👤 Alexander Johnstone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:59
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
155 words
A supported Ziegler catalyst component comprising the product obtained by (A) reacting together a refractory oxide support material having surface hydroxyl groups and one or more halogen-containing transition metal compounds, the transition metal being one or more selected from Groups 4b, 5b, 6b, and 8 of the Periodic Table, (B) reacting the product obtained from step A with one or more organometallic compounds having the general formular MR 1 a Q b-a wherein M is a metal selected from aluminium, boron, lithium, zinc, magnesium, silicon and tin, R 1 is a hydrocarbyl group, Q is hydrogen halogen or an oxyhydrocarbyl group, b is the valency of M and a is an integer from 1 to b, (C) reacting the product from step B with one or more transition metal compounds at least one which is a vanadium compound and which may be the same or different from the transition metal compound employed in step A.
Claim 2
Dependent Claim
155 words
A supported Ziegler catalyst component comprising the product obtained by (A) reacting together a refractory oxide support material having surface hydroxyl groups and one or more halogen-containing transition metal compounds, the transition metal being one or more selected from Groups 4b, 5b, 6b, and 8 of the Periodic Table, (B) reacting the product obtained from step A with one or more organometallic compounds having the general formular MR 1 a Q b-a wherein M is a metal selected from aluminium, boron, lithium, zinc, magnesium, silicon and tin, R 1 is a hydrocarbyl group, Q is hydrogen halogen or an oxyhydrocarbyl group, b is the valency of M and a is an integer from 1 to b, (C) reacting the product from step B with one or more transition metal compounds at least one which is a vanadium compound and which may be the same or different from the transition metal compound employed in step A.
Claim 3
Dependent Claim
14 words
A catalyst component as claimed in claim 1 wherein the refractory oxide is silica.
Claim 4
Dependent Claim
30 words
A catalyst component as claimed in claim 1 or 2 wherein the halogen-containing transition metal compound employed in step A is a titanium compound, a vanadium compound or mixtures thereof.
Claim 5
Dependent Claim
22 words
A catalyst component as claimed in claim 1 or 2 wherein the organometallic compound employed in step B is an aluminium trialkyl.
Claim 6
Dependent Claim
26 words
A catalyst component as claimed in claim 1 or 2 wherein the vanadium compound employed in step C is vanadyl chloride, vanadium tetrachloride or vanadyl ethylate.
Claim 7
Dependent Claim
29 words
A catalyst component as claimed in claim 1 or 2 wherein the transition metal compound employed in step C comprises a titanium compound in addition to the vanadium compound.
Claim 8
Dependent Claim
37 words
A catalyst component as claimed in claim 1 or 2 wherein the quantity of transition metal compound employed in step A is 0.01 to 10.0 moles per mole of hydroxy groups in the refractory oxide support material.
Claim 9
Dependent Claim
40 words
A catalyst component as claimed in any claim 1 or 2 wherein the quantity of organometallic compound employed in step B is the range 0.1 to 5.0 moles per mole of hydroxyl groups on the original refractory oxide support material.
Claim 10
Dependent Claim
45 words
A catalyst component as claimed in claim 1 or 2 wherein the quantity of vanadium compound (or transition metal including vanadium) employed in step C is in the range 0.01 to 10.0 moles per mole of hydroxyl groups in the original refractory oxide support material.
Claim 11
Dependent Claim
40 words
A cata;lyst component as claimed in any claim 1 or 2 wherein the atomic ratio of transition metal employed in step A to vanadium (or transition metal including vanadium) employed in step C is in the range 1:20 to 20:1.
Claim 12
Dependent Claim
27 words
A polymerisation catalyst comprising the catalyst component claimed in claim 1 or 2 together with an activator selected from a trialkyl aluminium compound or an alkylaluminium halide.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-16 | 1986-11-15 | 1987-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-16 | 1990-11-15 | 1991-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-16 | 1994-11-15 | 1995-05-17 | $7700.00 | Window Closed / Lapsed |