US2851503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylate having improved sulfonating characteristics
Assignee: California Research LLC
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Filing: 1954-10-20
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Granted: 1958-09-09
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Expires: 1974-10-20
Abstract
No abstract record available.
Inventors
- 👤 William H Shiffler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:50
CPC Classifications
C; C07; C07C; C07C15/00; C07C15/02; C07C15/107; C07C7/00; C07C7/148; C07C7/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A PROCESS FOR IMPROVING THE SULFONATING CHARACTERSTICS OF ALKYLATES PREPARED BY ALKYLATING BENZENE WITH OLEFIN POLYMER FRACTIONS CONTAINING 8 TO 18 CARBON ATOMS PER POLYMER MOLECULE, WHICH COMPRISES FRACTIONALLY DISTILLING THE CRUDE ALKYLATE TO SEPARATE A HEART CUT ALKYLATE CONSISTING ESSENTIALLY OF MONOALKYL BENZENES HAVING ALKYL SIDE CHAINS CONTAINING A NUMBER OF CARBON ATOMS CORRESPONDING TO THE NUMBER OF CARBON ATOMS IN THE POLYMER CHARGED TO THE ALKYLATION ZONE, INITIMATELY MIXING SAID HEART CUT ALKYLATE WITH BENZENE AND SUBSTANTIALLY ANHYDROUS HYDRODLUORIC ACID, THE QUANTITIES OF HYDROFLUORIC ACID AND BENZENE BEING SUCH THAT IN THE RESULTING MIXTURE OF MOL RATIO OF HYDROFLUORIC ACID TO HEART CUT ALKYLATE IS IN EXCESS OF 0.5:1 AND THE MOL RATIO OF BENZENE TO HEART CUT ALKYLATE IS IN EXCESS OF 0.25:1, SETTLING THE RESULTANT MIXTURE TO SEPERATE A PREDOMINATELY HYDROCARBON LAYER AND AN ACID LAYER, AND STRIPPING HYDROFLUORIC ACID AND BENZENE FROM THE HYDROCARBON LAYER BELOW ABOUT 400*F.
Claim 2
Dependent Claim
153 words
A PROCESS FOR IMPROVING THE SULFONATING CHARACTERSTICS OF ALKYLATES PREPARED BY ALKYLATING BENZENE WITH OLEFIN POLYMER FRACTIONS CONTAINING 8 TO 18 CARBON ATOMS PER POLYMER MOLECULE, WHICH COMPRISES FRACTIONALLY DISTILLING THE CRUDE ALKYLATE TO SEPARATE A HEART CUT ALKYLATE CONSISTING ESSENTIALLY OF MONOALKYL BENZENES HAVING ALKYL SIDE CHAINS CONTAINING A NUMBER OF CARBON ATOMS CORRESPONDING TO THE NUMBER OF CARBON ATOMS IN THE POLYMER CHARGED TO THE ALKYLATION ZONE, INITIMATELY MIXING SAID HEART CUT ALKYLATE WITH BENZENE AND SUBSTANTIALLY ANHYDROUS HYDRODLUORIC ACID, THE QUANTITIES OF HYDROFLUORIC ACID AND BENZENE BEING SUCH THAT IN THE RESULTING MIXTURE OF MOL RATIO OF HYDROFLUORIC ACID TO HEART CUT ALKYLATE IS IN EXCESS OF 0.5:1 AND THE MOL RATIO OF BENZENE TO HEART CUT ALKYLATE IS IN EXCESS OF 0.25:1, SETTLING THE RESULTANT MIXTURE TO SEPERATE A PREDOMINATELY HYDROCARBON LAYER AND AN ACID LAYER, AND STRIPPING HYDROFLUORIC ACID AND BENZENE FROM THE HYDROCARBON LAYER BELOW ABOUT 400*F.
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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |