Patent US4097409A successfully refreshed from Google Patents.
US4097409A
Expired / Lapsed
US
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Preparation of titanium containing catalyst on magnesium support material
Assignee: BP PLC
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Filing: 1976-12-01
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Granted: 1978-06-27
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Expires: 1996-12-01
Abstract
Abstract Process for the production of a supported Ziegler catalyst comprising treating a support material, obtained by heating silica with a magnesium halide or alkoxide, with a halogen containing titanium compound at a temperature below 40° C.
Inventors
- 👤 John Gabriel Speakman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:11
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
152 words
A process for the production of a supported Ziegler catalyst comprising treating: (a) a magnesium-containing support material obtained by heating at a temperature in the range of about 150°-1000° C a magnesium halide or a magnesium alkoxide with an inorganic oxide having surface hydroxyl groups, said inorganic oxide being silica or a silica composite containing at least 50% by weight of silica with (b) a halogen containing titanium compound of the formula Ti (OR) n X 4-n wherein n is 0, 1, 2, or 3, X is halogen and R is an alkyl group containing 1-6 carbon atoms at a temperature below 40° C, said catalyst having a magnesium concentration of from about 0.5 to 20% by weight based on the weight of the silica and magnesium compound together and a titanium concentration in the range of from about 0.01 to 20 wt. % based on the total weight of the catalyst.
Claim 2
Dependent Claim
152 words
A process for the production of a supported Ziegler catalyst comprising treating: (a) a magnesium-containing support material obtained by heating at a temperature in the range of about 150°-1000° C a magnesium halide or a magnesium alkoxide with an inorganic oxide having surface hydroxyl groups, said inorganic oxide being silica or a silica composite containing at least 50% by weight of silica with (b) a halogen containing titanium compound of the formula Ti (OR) n X 4-n wherein n is 0, 1, 2, or 3, X is halogen and R is an alkyl group containing 1-6 carbon atoms at a temperature below 40° C, said catalyst having a magnesium concentration of from about 0.5 to 20% by weight based on the weight of the silica and magnesium compound together and a titanium concentration in the range of from about 0.01 to 20 wt. % based on the total weight of the catalyst.
Claim 3
Dependent Claim
22 words
A process as claimed in claim 1 wherein the magnesium containing support material is the product of heating silica with magnesium chloride.
Claim 4
Dependent Claim
16 words
A process as claimed in claim 1 wherein the heating is carried out at 300°-800° C.
Claim 5
Dependent Claim
34 words
A process as claimed in claim 1 wherein the quantity of magnesium halide or alkoxide used is in the range 3 to 10% based on the weight of the silica and magnesium compound together.
Claim 6
Dependent Claim
14 words
A process as claimed in claim 1 wherein the titanium compound is titanium tetrachloride.
Claim 7
Dependent Claim
35 words
A process as claimed in claim 1 wherein the quantity of halogen-containing titanium compound is sufficient to give a titanium concentration in the range 1 to 10 wt % based on the total catalyst weight.
Claim 8
Dependent Claim
28 words
A process as claimed in claim 1 wherein the treating of the magnesium-containing support material is carried out at a temperature in the range -25° to +30° C.
Claim 9
Dependent Claim
31 words
A process as claimed in claim 1 wherein the treating is carried out by mixing the magnesium-containing support material with a solution of the titanium compound in a volatile inert solvent.
Claim 10
Dependent Claim
30 words
A process as claimed in claim 1 wherein the treating is carried out by mixing the magnesium-containing support material with titanium tetrachloride, a volatile inert solvent and a lower alcohol.
References Cited (Backward Citations)
US3205216A
Cited
GB1264040A
Cited
GB1265070A
Cited
GB1352718A
Cited
GB1367775A
Cited
US3993588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |