US3032508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of an alcl3-ether complex catalyst
Assignee: Standard Oil Co
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Filing: 1960-10-04
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Granted: 1962-05-01
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Expires: 1980-10-04
Abstract
No abstract record available.
Inventors
- 👤 Bernard L Evering
- 👤 Alan K Roebuck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:18
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A METHOD OF PREPARING AN ALCL3-ETHER COMPLEX CATALYST WHICH METHOD COMPRISES INTERMINGLING A LIQUID COMPLEX OF ALUMIUM CHLORIDE AND DIALKYL ETHER IN EQUIMOLAR AMOUNT, AND ALUMINUM CHLORIDE PARTICLES, SAID PARTICLES BEING PRESENT IN AN AMOUNT OF AT LEAST 7 PERCENT BY WEIGHT OF SAID COMPLEX, IN THE PRESENT OF ADDED HYDROGEN CHLORIDE, IN AN AMOUNT SUFFICIENT TO AFFORD A POSITIVE GASEOUS PRESSURE OF HCL, FOR A TIME SUFFICIENT TO FORM A CATALYST CONSISTING ESSENTIALLY OF SAID COMPLEX AND DISSOLVED ALCL3 IN AN AMOUNT OF AT LEAST 7 WEIGHT PERCENT BASED ON COMPLEX, SAID CATALYST CONTAINING MORE DISSOLVED ALCL3 THAN IS POSSIBLE TO DISSOLVE IN THE ABSENCE OF SAID ADDED HCL.
Claim 2
Independent Claim
110 words
A METHOD OF PREPARING AN ALCL3-ETHER COMPLEX CATALYST WHICH METHOD COMPRISES INTERMINGLING A LIQUID COMPLEX OF ALUMIUM CHLORIDE AND DIALKYL ETHER IN EQUIMOLAR AMOUNT, AND ALUMINUM CHLORIDE PARTICLES, SAID PARTICLES BEING PRESENT IN AN AMOUNT OF AT LEAST 7 PERCENT BY WEIGHT OF SAID COMPLEX, IN THE PRESENT OF ADDED HYDROGEN CHLORIDE, IN AN AMOUNT SUFFICIENT TO AFFORD A POSITIVE GASEOUS PRESSURE OF HCL, FOR A TIME SUFFICIENT TO FORM A CATALYST CONSISTING ESSENTIALLY OF SAID COMPLEX AND DISSOLVED ALCL3 IN AN AMOUNT OF AT LEAST 7 WEIGHT PERCENT BASED ON COMPLEX, SAID CATALYST CONTAINING MORE DISSOLVED ALCL3 THAN IS POSSIBLE TO DISSOLVE IN THE ABSENCE OF SAID ADDED HCL.
References Cited (Backward Citations)
US2897248A
Cited
US2975223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-30 | 1965-10-30 | 1966-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-30 | 1969-10-30 | 1970-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-30 | 1973-10-30 | 1974-05-01 | $7700.00 | Window Closed / Lapsed |