US4199473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin polymerization
Assignee: International Synthetic Rubber Co Ltd
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Filing: 1977-12-13
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Granted: 1980-04-22
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Expires: 1997-12-13
Abstract
Abstract A process for preparing a modified titanium chloride component for a titanium-containing Ziegler olefin polymerization catalyst comprising (1) treating an ether-free organo-magnesium compound with an oxygen-containing organic compound other than an ether, or with carbon dioxide or oxygen under anhydrous conditions and (2) reacting the product with titanium tetrachloride.
Inventors
- 👤 Donald G. Timms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:07
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
87 words
A process for preparing a modified titanium chloride component for a titanium containing Ziegler olefin polymerisation catalyst comprising (1) reacting an organo-magnesium compound of the formula RMg X or R 2 Mg where R is a hydrocarbyl group and X is chloride, bromine or iodine with an oxygen-containing compound which introduces a C--O--Mg bond into the organo-magnesium compound or with carbon dioxide or oxygen under anhydrous condition, reacting the product of step (1) with a carboxylic acid chloride and then (2) reacting the product with titanium tetrachloride.
Claim 2
Dependent Claim
87 words
A process for preparing a modified titanium chloride component for a titanium containing Ziegler olefin polymerisation catalyst comprising (1) reacting an organo-magnesium compound of the formula RMg X or R 2 Mg where R is a hydrocarbyl group and X is chloride, bromine or iodine with an oxygen-containing compound which introduces a C--O--Mg bond into the organo-magnesium compound or with carbon dioxide or oxygen under anhydrous condition, reacting the product of step (1) with a carboxylic acid chloride and then (2) reacting the product with titanium tetrachloride.
Claim 3
Dependent Claim
85 words
A process for preparing a modified titanium chloride component for a titanium containing Ziegler olefin polymerisation catalyst comprising (1) reacting an organo-magnesium compound of the formula RMg X or R 2 Mg where R is a hydrocarbyl group and X is chlorine, bromine or iodine with an oxygen-containing compound which introduces a C--O--Mg bond into the organo-mAgnesium compound or with carbon dioxide or oxygen under anhydrous condition, reacting the product of step (1) with benzoyl chloride and then (2) reacting the product with titanium tetrachloride.
Claim 4
Dependent Claim
85 words
A process for preparing a modified titanium chloride component for a titanium containing Ziegler olefin polymerisation catalyst comprising (1) reacting an organo-magnesium compound of the formula RMg X or R 2 Mg where R is a hydrocarbyl group and X is chlorine, bromine or iodine with an oxygen-containing compound which introduces a C--O--Mg bond into the organo-mAgnesium compound or with carbon dioxide or oxygen under anhydrous condition, reacting the product of step (1) with benzoyl chloride and then (2) reacting the product with titanium tetrachloride.
Claim 5
Dependent Claim
14 words
A process according to claim 2 wherein the oxygen-containing organic compound is an alcohol.
Claim 6
Dependent Claim
13 words
A process according to claim 2 wherein the oxygen-containing organic compound is ethanol.
Claim 7
Dependent Claim
27 words
A process for the preparation of a titanium-containing Ziegler olefin polymerisation catalyst which comprises admixing organo-aluminium cocatalyst to titanium tetrachloride modified by the process of claim 2.
Claim 8
Dependent Claim
14 words
A process according to claim 2 wherein the organo-magnesium compound is reacted with ethanol.
Claim 9
Dependent Claim
28 words
A process according to claim 6 wherein the product of step (1) is reacted with benzoyl chloride prior to step (2) and the organo-magnesium compound is butyl-magnesium chloride.
Claim 10
Dependent Claim
15 words
A process according to claim 5 wherein the organo-magnesium compound is reacted with an alcohol.
Claim 11
Dependent Claim
11 words
A process according to claim 8 wherein the alcohol is ethanol.
Claim 12
Dependent Claim
19 words
A process according to claim 9 wherein the organo-aluminium cocatalyst is an aluminium hydrocarbyl or an aluminium hydrocarbyl halide.
Claim 13
Dependent Claim
19 words
A process according to claim 5 wherein the organo-aluminium cocatalyst is an aluminium hydrocarbyl or an aluminium hydrocarbyl halide.
Claim 14
Dependent Claim
28 words
A process according to claim 2 wherein step (1) is carried out at room temperature and step (2) is carried out at reflux in an inert hydrocarbon diluent.
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) | 1983-04-22 | 1983-10-22 | 1984-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-22 | 1987-10-22 | 1988-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-22 | 1991-10-22 | 1992-04-22 | $7700.00 | Window Closed / Lapsed |