Patent US2660602A successfully refreshed from Google Patents.
US2660602A
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Process for preparing branched primary sulfate esters
Assignee: Standard Oil Development Co
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Filing: 1950-04-27
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Granted: 1953-11-24
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Expires: 1970-04-27
Abstract
No abstract record available.
Inventors
- 👤 Herbert K Wiese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:33
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR PRODUCING A BRANCHED PRIMARY ALKYL SULFATE WHICH COMPRISES REACTING ETHYLENE WITH A TETIARY C3-C30 OLEFIN IN THE PRESENCE OF 90-98 WEIGHT PER CENT SULFURIC ACID AT A TEMPERATURE OF -25* C. TO +80* C., AND AT AN ETHYLENE PARTIAL PRESSURE OF 50-1000 P. S. I. G. WHEREBY A BRANCHED PRIMARY ALKYL SULFATE IS OBTAINED HAVING TWO MORE CARBON ATOMS THAN THE TERTIARY OLEFIN REACTANT.
Claim 2
Dependent Claim
67 words
A PROCESS FOR PRODUCING A BRANCHED PRIMARY ALKYL SULFATE WHICH COMPRISES REACTING ETHYLENE WITH A TETIARY C3-C30 OLEFIN IN THE PRESENCE OF 90-98 WEIGHT PER CENT SULFURIC ACID AT A TEMPERATURE OF -25* C. TO +80* C., AND AT AN ETHYLENE PARTIAL PRESSURE OF 50-1000 P. S. I. G. WHEREBY A BRANCHED PRIMARY ALKYL SULFATE IS OBTAINED HAVING TWO MORE CARBON ATOMS THAN THE TERTIARY OLEFIN REACTANT.
References Cited (Backward Citations)
US2210316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |