US5643847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supported ionic catalyst composition
Assignee: ExxonMobil Chemical Patents Inc
•
Filing: 1995-06-07
•
Granted: 1997-07-01
•
Expires: 2015-06-07
Abstract
Abstract The invention is directed to a catalyst composition suitable for addition reactions of ethylenically and acetylenically unsaturated monomers comprising a metal oxide support having covalently bound to the surface thereof directly through the oxygen atom of the metal oxide an activator anion that is also ionically bound to a catalytically active transition metal cation compound. The invention includes a preparation process for the invention catalyst composition exemplified by reacting a Lewis acid, such as trisperflourophenyl boron with residual silanol groups of a silica support, preferably then reacting with a Lewis base such as diethylaniline, so as to prepare a silica bound anionic activator that when combined with a suitable transition metal compound will protonate it so as to form the ionic catalyst system. Use of the invention catalyst to polymerize alpha-olefins is exemplified.
Inventors
- 👤 John Flexer Walzer, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:35
CPC Classifications
C; C08; C08F; C08F10/00; C08F110/00; C08F110/02; C08F210/00; C08F210/16; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/619; C08F4/61908; C08F4/61916; C08F4/6192; C08F4/62; C08F4/64; C08F4/659; C08F4/65912; C08F4/6592; Y; Y10; Y10S; Y10S526/00; Y10S526/901; Y10S526/943
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
60 words
A metallocene catalyst composition characterized by comprising a metal oxide support having a counter anion that is derived from a Lewis acid not having readily hydrolyzable ligands and is covalently bound to the surface of the support directly through the oxygen atom of the metal oxide, wherein the anion is also ionically bound to a catalytically active transition metal compound.
Claim 2
Dependent Claim
60 words
A metallocene catalyst composition characterized by comprising a metal oxide support having a counter anion that is derived from a Lewis acid not having readily hydrolyzable ligands and is covalently bound to the surface of the support directly through the oxygen atom of the metal oxide, wherein the anion is also ionically bound to a catalytically active transition metal compound.
Claim 3
Dependent Claim
11 words
The composition of claim 1 wherein said metal oxide comprises silica.
Claim 4
Dependent Claim
20 words
The composition of claim 1 wherein said anion is non-coordinating toward the transition metal atom of said transition metal compound.
Claim 5
Dependent Claim
27 words
The composition of claim 1 wherein said transition metal is at least one selected from the group consisting of Group 4, 5, 6, 9 and 10 metals.
Claim 6
Dependent Claim
18 words
The composition of claim 1 wherein said transition metal is one or more of Ti, Zr or Hr.
Claim 7
Dependent Claim
19 words
The composition of claim 1 wherein said transition metal compound is a monocyclopentadienyl compound and the metal is titanium.
Claim 8
Dependent Claim
13 words
The catalyst composition of claim 1 wherein said anion is an activator anion.
Claim 9
Dependent Claim
67 words
The catalyst composition according to claim 1 prepared by the process comprising: a) contacting a Lewis acid non-coordinating anion precursor with a hydroxyl group-containing metal or metalloid oxide based support material; b) providing a Bronsted base strong enough to abstract a proton from the reaction product of a); and c) providing a transition metal compound capable of catalytic activation via protonation by the reaction product of b).
Claim 10
Dependent Claim
44 words
The composition of claim 8 wherein the precursor of a) is a neutral compound comprising a Group 13 metal or metalloid center with a complement of ligands sufficiently electron-withdrawing that the Lewis acidity is greater than or equal to that of AlCl 3 .
Claim 11
Dependent Claim
27 words
The composition of claim 8 wherein the Bronsted base composition of b) is one or more selected from the group consisting of dimethylaniline, diethylaniline, diphenylmethylamine, and tributylamine.
Claim 12
Dependent Claim
45 words
The composition of claim 8 wherein the transition metal compound is a mono- or biscyclopentadienyl substituted Group 4, 5, 6, 9, or 10 transition metal compound which may optionally contain essentially hydrocarbyl substitutents on at least one cyclopentadienyl substituent and which may optionally be bridged.
Claim 13
Dependent Claim
15 words
The composition of claim 11 wherein said transition metal compound comprises a Group 4-6 metal.
Claim 14
Dependent Claim
20 words
The composition of claim 11 wherein said transition metal compound is a monocyclopentadienyl compound and the transition metal is titanium.
Claim 15
Dependent Claim
22 words
The composition of claim 11 wherein said transition metal compound is a biscyclopentadienyl compound and the transition metal is zirconium or hafnium.
Claim 16
Dependent Claim
13 words
The composition of claim 1 wherein the counter anion comprises a boron atom.
Claim 17
Dependent Claim
78 words
A polymerization process characterized by comprising contacting one or more monomers polymerizable by coordination polymerization under suitable polymerization conditions with a metallocene catalyst composition comprising a metal oxide support having a counter anion that is derived from a Lewis acid not having readily hydrolyzable ligands and is covalently bound to the surface of the support directly through the oxygen atom of the metal oxide, wherein the anion is also ionically bound to a catalytically active transition metal compound.
Claim 18
Dependent Claim
78 words
A polymerization process characterized by comprising contacting one or more monomers polymerizable by coordination polymerization under suitable polymerization conditions with a metallocene catalyst composition comprising a metal oxide support having a counter anion that is derived from a Lewis acid not having readily hydrolyzable ligands and is covalently bound to the surface of the support directly through the oxygen atom of the metal oxide, wherein the anion is also ionically bound to a catalytically active transition metal compound.
Claim 19
Dependent Claim
21 words
The process of claim 16 wherein said contacting is accomplished in the presence of a liquid diluent under slurry polymerization conditions.
Claim 20
Dependent Claim
21 words
The process of claim 16 wherein said contacting is accomplished in a gas phase reactor under conditions of gas phase polymerization.
Claim 21
Dependent Claim
34 words
The process of claim 16 wherein said monomers comprise at least one member of the group consisting of alpha-olefins, non-conjugated diolefins, acetylenically unsaturated monomers, olefinically unsaturated aromatic monomers, and C 20 -C 100 macromonomers.
Claim 22
Dependent Claim
25 words
The process of claim 16 wherein said monomers comprise at last one member of the group consisting of ethylene and C 2 -C 20 alpha-olefins.
Claim 23
Dependent Claim
10 words
The process of claim 16 wherein said monomers comprise propylene.
References Cited (Backward Citations)
US5198401A
Cited
US5001205A
Cited
US5057475A
Cited
EP0427697B1
Cited
WO1991009882A1
Cited
US5206197A
Cited
US5308816A
Cited
EP0520732A1
Cited
US5288677A
Cited
US5444134A
Cited
WO1993011172A1
Cited
US5453410A
Cited
WO1993019103A1
Cited
WO1994000500A1
Cited
WO1994003506A1
Cited
WO1994007928A1
Cited
US5428120A
Cited
WO1995015815A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-06-30 | 2000-12-30 | 2001-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-06-30 | 2004-12-30 | 2005-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-06-30 | 2008-12-30 | 2009-07-01 | $7700.00 | Window Closed / Lapsed |