US4634751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization catalyst, production and use
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1985-12-09
•
Granted: 1987-01-06
•
Expires: 2005-12-09
Abstract
Abstract A vanadium containing catalyst component useful for polymerizing olefins to polyolefins having a high molecular weight and broad molecular weight distribution comprising polymerizing the olefins in the presence of a catalyst comprising (a) a vanadium containing catalyst component obtained by contacting an inert support material with an organoaluminum compound, an acyl halide and a vanadium compound, and (b) an aluminum alkyl cocatalyst.
Inventors
- 👤 Steven A. Best
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:47
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
108 words
A process for polymerization of ethylene and alpha-olefins having from 1 to 20 carbon atoms or mixtures of ethylene, alpha-olefins and diolefins which process comprises polymerizing one or more olefins in the presence of the catalyst system comprising (a) an organoaluminum cocatalyst, and (b) a vanadium containing catalyst component obtained by treating an inert solid support material in an inert solvent with (i) an organoaluminum compound represented by the formula R m AlX 3-m , wherein R represents an alkyl group, cycloalkyl group or aryl group having from 1 to 18 carbon atoms, X represents halogen atoms, and 1≦m≦3, (ii) an acyl halide, and (iii) a vanadium compound.
Claim 2
Dependent Claim
108 words
A process for polymerization of ethylene and alpha-olefins having from 1 to 20 carbon atoms or mixtures of ethylene, alpha-olefins and diolefins which process comprises polymerizing one or more olefins in the presence of the catalyst system comprising (a) an organoaluminum cocatalyst, and (b) a vanadium containing catalyst component obtained by treating an inert solid support material in an inert solvent with (i) an organoaluminum compound represented by the formula R m AlX 3-m , wherein R represents an alkyl group, cycloalkyl group or aryl group having from 1 to 18 carbon atoms, X represents halogen atoms, and 1≦m≦3, (ii) an acyl halide, and (iii) a vanadium compound.
Claim 3
Dependent Claim
63 words
A process as in claim 1 wherein the vanadium compound is represented by the general formulas: ##STR4## where x=0-3 and R=a hydrocarbon radical; VCl.sub.y (OR).sub.4-y, ( 2) where y=3-4 and R=a hydrocarbon radical; ##STR5## where z=2-3 and (AcAc)--acetyl acetonate group; ##STR6## where (AcAc)=acetyl acetonate group; or VCl.sub.3 ·nL, (5) where n=2-3 and L=a Lewis base which forms hydrocarbon-soluble complexes with VCl 3 .
Claim 4
Dependent Claim
20 words
A process as in claim 2 wherein the acyl halide is selected from acetyl chloride, benzoyl chloride and p-methylbenzoyl chloride.
Claim 5
Dependent Claim
21 words
A process as in claim 1 wherein the inert solid support material is an inorganic oxide or mixtures of inorganic oxides.
Claim 6
Dependent Claim
12 words
A process as in claim 4 wherein the inorganic oxide is silica.
Claim 7
Dependent Claim
21 words
A proces as in claim 2 wherein the vanadium compound is selected from vanadyl trichloride, vanadium tetrachloride and vanadyl chloride dibutoxy.
Claim 8
Dependent Claim
19 words
A process as in claim 1 wherein the organo aluminum compound is selected from trimethylaluminum, triethylaluminum, triisobutylaluminum and tri-n-octylaluminum.
Claim 9
Dependent Claim
23 words
A processs as in claim 1 wherein the silica is contacted sequentially with the organoaluminum compound, the acyl chloride, and the vanadium compound.
Claim 10
Dependent Claim
25 words
A process as in claim 1 wherein the inert support material is contacted sequentially with the acyl chloride, the aluminum compound and the vanadium compound.
References Cited (Backward Citations)
US3354139A
Cited
SU422192A1
Cited
US4385161A
Cited
EP0055589A1
Cited
US4434242A
Cited
US4508842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-05 | 1990-07-07 | 1991-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-05 | 1994-07-07 | 1995-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-05 | 1998-07-07 | 1999-01-06 | $7700.00 | Window Closed / Lapsed |