US3787518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural stages of hf alkylation of isoparaffin with butylene and propylene reactants
Assignee: Universal Oil Products Co
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Filing: 1972-03-20
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Granted: 1974-01-22
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Expires: 1992-03-20
Abstract
Abstract PLURAL STAGES FOR ALKYLATING AN ISOPARAFFIN WITH A BUTYLENE REACTANT AND WITH A PROPYLENE REACTANT UTILIZING HYDROGEN FLUORIDE CATALYST, THE BUTYLENE REACTANT IS REACTED INITIALLY WITH A CATALYST CONTAINING 70-95 WT. PERCENT HF AND THE SEPARATED HYDROCARBON PHASE IS THEN REACTED WITH THE PROPYLENE REACTANT WITH A CATALYST OF HIGHER HF CON- CENTRATION THAN THAT UTILIZED IN THE INTIAL REACTION. THE CATALYST IN THE SECOND REACTION CONTAINS 80-99 WT. PERCENT HF. AN P PRODUCT IS RECOVERED FROM THE BUTYLENE AND PROPYLENE STAGES OF ALKYLATION.
Inventors
- 👤 R Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:11
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/62; C07C2/64; C07C2/66; C07C2/70; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |