US4581342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supported olefin polymerization catalyst
Assignee: BP Corp North America Inc
•
Filing: 1984-11-26
•
Granted: 1986-04-08
•
Expires: 2004-11-26
Abstract
Abstract A solid-hydrocarbon insoluble, alpha-olefin polymerization catalyst component with superior activity, stereospecificity and morphology characteristics, comprises the product formed by (a) complexing a magnesium alkyl composition with an ortho disubstituted hindered aromatic acid ester; (b) reacting the resulting complex with a compatible precipitation agent to form a solid component; and (c) reacting the resulting solid with a titanium(IV) compound and an electron donor compound in a suitable diluent.
Inventors
- 👤 Bryce V. Johnson
- 👤 Nicholas M. Karayannis
- 👤 Charles R. Hoppin
- 👤 Linda Ornellas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:14
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
114 words
A solid, hydrocarbon-insoluble, alpha-olefin polymerization catalyst component comprising the product formed by: A. complexing a magnesium alkyl composition with an ortho disubstituted hindered carboxylic aromatic acid ester having a structure: ##STR4## wherein R is an alkyl group containing one to about ten carbon atoms, and R' and R" are alkyl groups containing one to about six carbon atoms or --Cl or --Br and X is hydrogen, an alkyl group, an aryl group, an --OR group or a halogen; B. reacting the resulting stable complex with a compatible precipitation agent to form a solid component; and C. reacting the resulting solid with a titanium(IV) compound in a suitable diluent containing a suitable electron donor compound.
Claim 2
Dependent Claim
114 words
A solid, hydrocarbon-insoluble, alpha-olefin polymerization catalyst component comprising the product formed by: A. complexing a magnesium alkyl composition with an ortho disubstituted hindered carboxylic aromatic acid ester having a structure: ##STR4## wherein R is an alkyl group containing one to about ten carbon atoms, and R' and R" are alkyl groups containing one to about six carbon atoms or --Cl or --Br and X is hydrogen, an alkyl group, an aryl group, an --OR group or a halogen; B. reacting the resulting stable complex with a compatible precipitation agent to form a solid component; and C. reacting the resulting solid with a titanium(IV) compound in a suitable diluent containing a suitable electron donor compound.
Claim 3
Dependent Claim
33 words
The catalyst component of claim 1 wherein the hindered aromatic ester is ethyl 2,4,6-trimethylbenzoate, ethyl 2,6-dimethylbenzoate, ethyl 2,4,6-triethylbenzoate, methyl 2,4,6-trimethylbenzoate, methyl 2,6-dimentylbenzoate, ethyl 2,6-diethylbenzoate, ethyl 2,3,5,6-tetramethylbenzoate, ethyl 2,6-bis(triflouromethyl)benzoate, ethyl 2,6-dimethyl-6-ethylbenzoate or ethyl 2,6-dimethyl-4-ethylbenzoate.
Claim 4
Dependent Claim
17 words
The catalyst component of claim 1 wherein the hindered aromatic ester is ethyl 2,4,6-trimethylbenzoate or ethyl 2,6-dimethylbenzoate.
Claim 5
Dependent Claim
14 words
The catalyst component of claim 1 wherein the titanium (IV) compound is titanium tetrachloride.
Claim 6
Dependent Claim
33 words
The catalyst component of claim 1 wherein the diluent in Step C is an aromatic hydrocarbon, a halogenated aromatic hydrocarbon or a mixture of a halogenated aromatic hydrocarbon and a halogenated aliphatic hydrocarbon.
Claim 7
Dependent Claim
21 words
The catalyst component of claim 1 wherein the diluent in Step C is chlorobenzene or a mixture of chlorobenzene and 1,2-dichloroethane.
Claim 8
Dependent Claim
20 words
The catalyst component of claim, 1 wherein the electron donor compound in Step C is an carboxylic aromatic acid ester.
Claim 9
Dependent Claim
17 words
The catalyst component of claim 1 wherein the electron donor in Step C is a dialkylphthalate ester.
Claim 10
Dependent Claim
10 words
The catalyst of claim 7 wherein the ester is diisobutylphthalate.
Claim 11
Dependent Claim
18 words
The catalyst component of claim 1 wherein the precipitation is silicon tetrachloride, t-butyl chloride or dry hydrogen chloride.
Claim 12
Dependent Claim
13 words
The catalyst component of claim 1 wherein the precipitation agent is silicon tetrachloride.
Claim 13
Dependent Claim
15 words
A catalyst component of claim 1 which is further treated with toluene and titanium tetrachloride.
Claim 14
Dependent Claim
21 words
The catalyst component of claim 1 wherein the magnesium alkyl composition contains alkyl group with two to about ten carbon atoms.
Claim 15
Dependent Claim
21 words
The catalyst composition of claim 1 wherein the magnesium alkyl composition is di-n-butyl magnesium, di-n-methyl magnesium, di-n-propyl magnesium or butyloctyl magnesium.
Claim 16
Dependent Claim
15 words
The catalyst component of claim 1 wherein the magnesium alkyl composition contains an aluminum alkyl.
Claim 17
Dependent Claim
19 words
The catalyst composition of claim 1 wherein the magnesium alkyl composition is a mixture of di-n-butyl magnesium and triethylaluminum.
Claim 18
Dependent Claim
19 words
The catalyst composition of claim 1 wherein the magnesium alkyl composition is a mixture of butyloctyl magnesium and diethylether.
Claim 19
Dependent Claim
60 words
A solid, hydrocarbon-insoluble alpha-olefin polymerization catalyst component of claim 1 comprising the product formed by: A. complexing a magnesium alkyl composition with ethyl 2,6-dimethyl benzoate or ethyl 2,4,6-trimethyl benzoate; B. reacting the resulting complex with silicon tetrachloride to form a solid component; and C. reacting the resulting solid with titanium tetrachloride in a liquid aromatic diluent containing a dialkylphthalate ester.
Claim 20
Dependent Claim
17 words
The catalyst component of claim 18 wherein the magnesium alkyl composition contains di-n-butyl magnesium or butyloctyl magnesium.
Claim 21
Dependent Claim
34 words
The catalyst component of claim 18 wherein the aromatic diluent in Step C is an aromatic hydrocarbon, a halogenated aromatic hydrocarbon or a mixture of a halogenated aromatic hydrocarbon and a halogenated aliphatic hydrocarbon.
Claim 22
Dependent Claim
17 words
A complex formed by contacting a magnesium alkyl composition with an alkyl hindered carboxylic aromatic acid ester.
Claim 23
Dependent Claim
17 words
A complex formed by contacting a magnesium alkyl composition with an alkyl hindered carboxylic aromatic acid ester.
Claim 24
Dependent Claim
31 words
The complex of claim 21 wherein the hindered ester is ethyl 2,4,6-trimethylbenzoate, ethyl 2,6-dimethylbenzoate, ethyl 2,4,6-triethylbenzoate, methyl 2,4,6-trimethylbenzoate, methyl 2,6-dimethylbenzoate, ethyl 2,6-diethylbenzoate, ethyl 2,3,5,6-tetramethylbenzoate, ethyl 2,6-bis(triflouromethyl)benzoate, ethyl 2,6-dimethyl-6-ethylbenzoate or ethyl 2,6-dimethyl-4-ethylbenzoate.
Claim 25
Dependent Claim
15 words
The complex of claim 21 wherein the hindered ester is ethyl 2,4,6trimethylbenzoate or ethyl 2,6-dimethylbenzoate.
Claim 26
Dependent Claim
20 words
The complex of claim 21 wherein the magnesium alkyl composition contains alkyl groups with two to about ten carbon atoms.
Claim 27
Dependent Claim
20 words
The complex of claim 21 wherein the magnesium alkyl composition is di-n-butyl magnesium, di-n-methyl magnesium, di-n-propyl magnesium or butyloctyl magnesium.
Claim 28
Dependent Claim
14 words
The complex of claim 25 wherein hindered ester is ethyl 2,6-dimethylbenzoate or ethyl 2,4,6-trimethylbenzoate.
References Cited (Backward Citations)
GB1586267A
Cited
US4314912A
Cited
US4279776A
Cited
GB2018789A
Cited
US4301029A
Cited
US4310439A
Cited
US4363746A
Cited
US4471066A
Cited
FR2529209A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |