US3349067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst, preparation thereof, and polymerization process utilizing said catalyst
Assignee: British Hydrocarbon Chemicals Ltd
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Filing: 1962-12-19
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Granted: 1967-10-24
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Expires: 1982-12-19
Abstract
No abstract record available.
Inventors
- 👤 Hill Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:30
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/26; C; C08; C08F; C08F10/00; B01J37/00; B01J37/02; B01J37/0201; B01J37/0203
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
96 words
A PROCESS OF PREPARING A POLYMERIZATION CATALYST WHICH COMPRISES CONTACTING A CARRIER MATERIAL WITH A SOLUTION OF CHROMIUM-CONTAINING COMPOUND IN ANHYDROUS ORGANIC SOLVENT, DEPOSITING A CHROMIUN COMPOUND WHICH IS AT LEAST PARTIALLY CONVERTIBLE TO CHROMIUM OXIDE ON HEATING IN THE PRESENCE OF ELEMENTAL OXYGEN, ONTO SAID CARRIER MATERIAL UNDER SUBSTANTIALLY ANHYDROU CONDITIONS BY EVAPORATING SAID SOLVENT OR PRECIPITATING SAID CHROMIUM COMPOUND FROM SOLUTION BY CHEMICAL REACTION, AND SUBSEQUENTLY HEATING THE RESULTING COMPOSITE IN THE PRESENCE OF ELEMENTAL OXYGEN AND THUS CONVERTING THE CHROMIUM COMPOUND TO CHROMIUM OXIDE WHERIN AT LEAST PART OF THE CHROMIUM IS HEXAVALENT.
Claim 2
Dependent Claim
96 words
A PROCESS OF PREPARING A POLYMERIZATION CATALYST WHICH COMPRISES CONTACTING A CARRIER MATERIAL WITH A SOLUTION OF CHROMIUM-CONTAINING COMPOUND IN ANHYDROUS ORGANIC SOLVENT, DEPOSITING A CHROMIUN COMPOUND WHICH IS AT LEAST PARTIALLY CONVERTIBLE TO CHROMIUM OXIDE ON HEATING IN THE PRESENCE OF ELEMENTAL OXYGEN, ONTO SAID CARRIER MATERIAL UNDER SUBSTANTIALLY ANHYDROU CONDITIONS BY EVAPORATING SAID SOLVENT OR PRECIPITATING SAID CHROMIUM COMPOUND FROM SOLUTION BY CHEMICAL REACTION, AND SUBSEQUENTLY HEATING THE RESULTING COMPOSITE IN THE PRESENCE OF ELEMENTAL OXYGEN AND THUS CONVERTING THE CHROMIUM COMPOUND TO CHROMIUM OXIDE WHERIN AT LEAST PART OF THE CHROMIUM IS HEXAVALENT.
Claim 3
Dependent Claim
48 words
A PROCESS WHICH COMPRISES POLYMERIZING AN ALIPHATIC 1-OLEFIN HAVING FROM 2 TO 8 CARBON ATOMS PER MOLECULE AND NO BRANCHING NEARER THE DOUBLE BOND THAN THE 4POSITION, AT A TEMPERATURE WITHIN THE RANGE 100 TO 500*F. IN THE PRESENCE OF A CATALYST PREPARED IN ACCORDANCE WITH CLAIM 1.
References Cited (Backward Citations)
US2825721A
Cited
BE594956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |