Patent US3903017A successfully refreshed from Google Patents.
US3903017A
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Polymerization catalysts
Assignee: Studiengesellschaft Kohle gGmbH
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Filing: 1972-04-20
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Granted: 1975-09-02
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Expires: 1992-04-20
Abstract
Abstract A polymerization catalyst for polymerizing olefins, such as ethylene and its homologs, in the form of the reaction product obtained by mixing a titanium trihalide such as titanium trichloride with an organo-metallic compound which has a reducing action on the valence of the titanium trihalide. Examples of organo-metallic compounds include organo-aluminum and -magnesium compounds such as the metal alkyls and metal alkyl halides.
Inventors
- 👤 Karl Ziegler
- 👤 Heinz Breil
- 👤 Erhard Holzkamp
- 👤 Heinz Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:59
CPC Classifications
C; C08; C08F; C08F110/00; C08F110/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
48 words
A CATALYST COMPOSITION FOR POLYMERIZING OLEFINS CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OBTAINED ON ADMIXING A TITANIUM TRIHALIDE WITH AN ORGANOALUMINUM COMPOUND CONTAINING AT LEAST ONE ALKYL RADICAL BONDED TO ALUMINUM, THE QUANTITY OF THE ORGANOALUMINUM COMPOUND BEING AT LEAST 0.3 OF THE MOLAR AMOUNT OF THE TITANIUM.
Claim 2
Dependent Claim
48 words
A CATALYST COMPOSITION FOR POLYMERIZING OLEFINS CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OBTAINED ON ADMIXING A TITANIUM TRIHALIDE WITH AN ORGANOALUMINUM COMPOUND CONTAINING AT LEAST ONE ALKYL RADICAL BONDED TO ALUMINUM, THE QUANTITY OF THE ORGANOALUMINUM COMPOUND BEING AT LEAST 0.3 OF THE MOLAR AMOUNT OF THE TITANIUM.
Claim 3
Dependent Claim
16 words
The catalyst composition as set forth in claim 1 wherein the titanium trihalide is titanium trichloride.
Claim 4
Dependent Claim
16 words
The catalyst composition as set forth in claim 1 wherein the titanium trihalide is titanium tribromide.
Claim 5
Dependent Claim
18 words
The catalyst composition as set forth in claim 1 wherein the organoaluminum compound is an alkyl aluminum halide.
Claim 6
Dependent Claim
18 words
The catalyst composition as set forth in claim 1 wherein the organoaluminum compound is an alkyl aluminum hydride.
Claim 7
Dependent Claim
26 words
The catalyst composition as set forth in claim 1 wherein the molar ratio of The organoaluminum compound to the titanium trihalide varies from 0.3 to 10.
Claim 8
Dependent Claim
16 words
The catalyst composition as set forth in claim 1 wherein the organoaluminum compound is aluminum trialkyl.
Claim 9
Dependent Claim
36 words
A catalyst composition consisting essentially of the reaction product obtained on admixing a titanium trihalide with an aluminum hydride, the quantity of said aluminum hydride being at least 0.3 of the molar amount of the titanium.
Claim 10
Dependent Claim
36 words
A catalyst composition consisting essentially of the reaction product obtained on admixing a titanium trihalide with an aluminum hydride, the quantity of said aluminum hydride being at least 0.3 of the molar amount of the titanium.
Claim 11
Dependent Claim
40 words
A catalyst for polymerizing olefins consisting essentially of the reaction product obtained on admixing a titanium trihalide with an aryl aluminum halide, the quantity of the aryl aluminum halide being at least 0.3 of the molar amount of the titanium.
Claim 12
Dependent Claim
40 words
A catalyst for polymerizing olefins consisting essentially of the reaction product obtained on admixing a titanium trihalide with an aryl aluminum halide, the quantity of the aryl aluminum halide being at least 0.3 of the molar amount of the titanium.
Claim 13
Dependent Claim
38 words
A catalyst for polymerizing olefins consisting essentially of the reaction product obtained on admixing a titanium trihalide with an aluminum triaryl, the quantity of the aluminum triaryl being at least 0.3 of the molar amount of the titanium.
Claim 14
Dependent Claim
38 words
A catalyst for polymerizing olefins consisting essentially of the reaction product obtained on admixing a titanium trihalide with an aluminum triaryl, the quantity of the aluminum triaryl being at least 0.3 of the molar amount of the titanium.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |