US3227774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfuric alkylation acid recovery
Assignee: Texaco Development Corp
•
Filing: 1965-01-21
•
Granted: 1966-01-04
•
Expires: 1985-01-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur R Goldsby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:32
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/62; C07C2527/00; C07C2527/02; C07C2527/053; C07C2527/054
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A PROCESS WHEREIN AN ISOPARAFFIN IS ALKYLATED WITH AN OLEFIN IN THE PRESENCE OF A SULFURIC ACID CATALYST IN AN ALKYLATION ZONE WHEREIN SAID CATALYST BECOMES CONTAMINATED WITH POLYMERIC ORGANIC MATERIAL, THE IMPROVEMENT WHICH COMPRISES: CONTACTING AN OLEFIN WITH USED ALKYLATION ACID CONTAINING POLYMERIC ORGANIC CONTAMINANTS EFFECTING FORMATION OF AN ABSORPTION PRODUCT COMPRISING A DIALKYL SULFATE, SEPARATING SAID ABSORPTION PRODUCT INTO AN ACID PHASE AND AN ORGANIC PHASE COMPRISING SAID DIALKYL SULFATE AND AT LEAST A PORTION OF SAID POLYMERIC ORGANIC CONTAMINANTS, TREATING SAID ORGANIC PHASE EFFECTING REMOVAL OF POLYMERIC ORGANIC CONTAMINANTS THEREFROM, AND PASSING THUS TREATED ORGANIC PHASE TO SAID ALKYLATION ZONE.
Claim 2
Dependent Claim
104 words
IN A PROCESS WHEREIN AN ISOPARAFFIN IS ALKYLATED WITH AN OLEFIN IN THE PRESENCE OF A SULFURIC ACID CATALYST IN AN ALKYLATION ZONE WHEREIN SAID CATALYST BECOMES CONTAMINATED WITH POLYMERIC ORGANIC MATERIAL, THE IMPROVEMENT WHICH COMPRISES: CONTACTING AN OLEFIN WITH USED ALKYLATION ACID CONTAINING POLYMERIC ORGANIC CONTAMINANTS EFFECTING FORMATION OF AN ABSORPTION PRODUCT COMPRISING A DIALKYL SULFATE, SEPARATING SAID ABSORPTION PRODUCT INTO AN ACID PHASE AND AN ORGANIC PHASE COMPRISING SAID DIALKYL SULFATE AND AT LEAST A PORTION OF SAID POLYMERIC ORGANIC CONTAMINANTS, TREATING SAID ORGANIC PHASE EFFECTING REMOVAL OF POLYMERIC ORGANIC CONTAMINANTS THEREFROM, AND PASSING THUS TREATED ORGANIC PHASE TO SAID ALKYLATION ZONE.
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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |