Patent US4237029A successfully refreshed from Google Patents.
US4237029A
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Catalyst comprising intensely mixed triaryl phosphite, aluminum trihalide, titanium trihalide component
Assignee: Phillips Petroleum Co
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Filing: 1979-01-29
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Granted: 1980-12-02
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Expires: 1999-01-29
Abstract
Abstract A catalyst system is made up of a catalyst and a cocatalyst. The catalyst component is made by intensely mixing a titanium trihalide component with triaryl phosphite and aluminum trihalide adjuvants. The cocatalyst is an organoaluminum compound. An example of such a system is a ball milled mixture of TiCl 3 . 1/ 3AlCl 3 , triphenyl phosphite, and aluminum trichloride as the catalyst and diethylaluminum chloride as the cocatalyst. Such catalyst systems give both high productivity and low solubles in the polymerization of propylene. The catalytic activity and/or stereospecificity of the catalyst can be enhanced by heat treatment at a moderate temperature subsequent to milling the mixture.
Inventors
- 👤 Lawrence M. Fodor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:48
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
100 words
A catalyst which forms on intensively mixing together TiX 3 , AlX 3 and a triaryl phosphite wherein X is halide to form a first milled, dry component which first component is subjected to a heat treatment consisting essentially of raising the temperature of said first component while retaining said first component in the dry state and then combined with a cocatalyst organoaluminum compound of the formula R n 'AlX 3-n in which R' is a hydrocarbon group containing from 1 to about 20 carbon atoms, X is a halogen atom and n is an integer of 1 to 3.
Claim 2
Dependent Claim
100 words
A catalyst which forms on intensively mixing together TiX 3 , AlX 3 and a triaryl phosphite wherein X is halide to form a first milled, dry component which first component is subjected to a heat treatment consisting essentially of raising the temperature of said first component while retaining said first component in the dry state and then combined with a cocatalyst organoaluminum compound of the formula R n 'AlX 3-n in which R' is a hydrocarbon group containing from 1 to about 20 carbon atoms, X is a halogen atom and n is an integer of 1 to 3.
Claim 3
Dependent Claim
52 words
A catalyst of claim 1 wherein the triaryl phosphite is represented by the formula (RO) 3 P where R is aryl, alkyl-substituted aryl, cycloalkyl substituted aryl and aryl-substituted aryl wherein the basic unsubstituted aryl contains 6-14 carbon atoms and the alkyl, cycloalkyl and aryl substituents have 1 to about 10 carbon atoms.
Claim 4
Dependent Claim
22 words
A catalyst of claim 1 wherein said TiCl 3 is TiCl 3 .1/3AlCl 3 formed by reduction of TiCl 4 with aluminum.
Claim 5
Dependent Claim
12 words
A catalyst of claim 2 wherein said triaryl phosphite is triphenyl phosphite.
Claim 6
Dependent Claim
19 words
A catalyst of claim 4 wherein said AlX 3 is AlCl 3 and said organoaluminum compound is diethylaluminum chloride.
Claim 7
Dependent Claim
44 words
A catalyst according to claim 3 wherein the mole ratio of said TiCl 3 .1/3AlCl 3 compound to triaryl phosphite is about 4:1 to 25:1 and the mole ratio of TiCl 3 .1/3AlCl 3 compound to aluminum trihalide is about 1.5:1 to about 11:1.
Claim 8
Dependent Claim
24 words
A catalyst of claim 3 wherein the mole ratio of organoaluminum compound to TiCl 3 .1/3AlCl 3 compound is about 1:1 to about 100:1.
Claim 9
Dependent Claim
12 words
A catalyst of claim 1 wherein said intensively mixing is ball milling.
Claim 10
Independent Claim
102 words
A method for preparing a catalyst comprising intensively mixing together TiX 3 , AlX 3 and a triaryl phosphite wherein X is halide to form a first milled, dry catalyst composition which first composition is subjected to heat treatment consisting essentially of raising the temperature of said first composition while retaining said first composition in a dry state and then combined with a cocatalyst organoaluminum compound of the formula R n 'AlX 3-n in which R' is a hydrocarbon group containing from 1 to about 20 carbon atoms, X is a halogen atom and n is an integer of 1 to 3.
Claim 11
Independent Claim
102 words
A method for preparing a catalyst comprising intensively mixing together TiX 3 , AlX 3 and a triaryl phosphite wherein X is halide to form a first milled, dry catalyst composition which first composition is subjected to heat treatment consisting essentially of raising the temperature of said first composition while retaining said first composition in a dry state and then combined with a cocatalyst organoaluminum compound of the formula R n 'AlX 3-n in which R' is a hydrocarbon group containing from 1 to about 20 carbon atoms, X is a halogen atom and n is an integer of 1 to 3.
Claim 12
Dependent Claim
38 words
A method of claim 8 wherein the triaryl phosphite is represented by the formula (RO) 3 P where R is aryl, alkyl-substituted aryl, cycloalkyl substitued aryl and aryl-substituted aryl wherein the basic unsubstituted aryl contains 6-14 carbon atoms.
Claim 13
Dependent Claim
22 words
A method of claim 8 wherein said TiCl 3 is TiCl 3 .1/3AlCl 3 formed by reduction of TiCl 4 with aluminum.
Claim 14
Dependent Claim
12 words
A method of claim 9 wherein said triaryl phosphite is triphenyl phosphite.
Claim 15
Dependent Claim
19 words
A method of claim 11 wherein said AlX 3 is AlCl 3 and said organoaluminum compound is diethylaluminum chloride.
Claim 16
Dependent Claim
43 words
A method of claim 10 wherein the mole ratio of said TiCl 3 .1/3AlCl 3 compound to triaryl phosphite is about 4:1 to 25:1 and the mole ratio of TiCl 3 .1/3AlCl 3 compound to aluminum trihalide is about 1.5:1 to about 11:1.
Claim 17
Dependent Claim
12 words
A method of claim 8 wherein said intensive mixing is ball milling.
Claim 18
Dependent Claim
36 words
A method of claim 8 wherein the milled first component of said catalyst is heat treated at a temperature in the range of about 50° to about 120° C. for about 0.1 to about 10 hours.
Claim 19
Dependent Claim
22 words
A catalyst of claim 1 wherein said TiX 3 is intensively premilled before mixing together with said AlX 3 and triaryl phosphite.
Claim 20
Dependent Claim
22 words
A method of claim 9 wherein said TiX 3 is intensively premilled before mixing together with said AlX 3 and triaryl phosphite.
References Cited (Backward Citations)
US2970133A
Cited
GB895595A
Cited
US3032510A
Cited
US3094568A
Cited
US3502634A
Cited
US3298965A
Cited
US4028481A
Cited
US3923687A
Cited
US4048415A
Cited
US3977997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |