US2878271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Neutralization of sulfonation mixtures and products thereof
Assignee: TENNESSE Corp
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Filing: 1957-05-17
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Granted: 1959-03-17
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Expires: 1977-05-17
Abstract
No abstract record available.
Inventors
- 👤 William S Little
- 👤 Leonard M Wylie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:38
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/02; C07C303/04; C07C303/06; C07C303/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
IN A PROCESS IN WHICH AN UNSATURATED FATTY ACID IS REACTED WITH AN SO2-SO3 SOLUTION, THE STEPS OF HEATING THE REACTION MIXTURE UNTIL IT REACHES A TEMPERTURE IN THE RANGE OF APPROXIMATELY 25-50*F. REMOVING SO2 AS EVOLVED, ADDING A BASE TO THE REACTION MIXTURE UNTIL THE PH OF THE REACTION MIXTURE IS IN THE APPROXIMATE RANGE OF FROM 1-4,3, AND PREDERABLY IN THE APPROXIMATE RANGE OF 2-2.5, CONTINUOUSLY REMOVING EVOLVED SO2 AND AFTER REMOVAL OF SO2 ADDING ADDITIONAL BASE TO THE STRIPPED REACTION MIXTURE UNTIL THE PH OF THE MIXTURE IS APPROXIMATELY 6.
Claim 2
Dependent Claim
93 words
IN A PROCESS IN WHICH AN UNSATURATED FATTY ACID IS REACTED WITH AN SO2-SO3 SOLUTION, THE STEPS OF HEATING THE REACTION MIXTURE UNTIL IT REACHES A TEMPERTURE IN THE RANGE OF APPROXIMATELY 25-50*F. REMOVING SO2 AS EVOLVED, ADDING A BASE TO THE REACTION MIXTURE UNTIL THE PH OF THE REACTION MIXTURE IS IN THE APPROXIMATE RANGE OF FROM 1-4,3, AND PREDERABLY IN THE APPROXIMATE RANGE OF 2-2.5, CONTINUOUSLY REMOVING EVOLVED SO2 AND AFTER REMOVAL OF SO2 ADDING ADDITIONAL BASE TO THE STRIPPED REACTION MIXTURE UNTIL THE PH OF THE MIXTURE IS APPROXIMATELY 6.
References Cited (Backward Citations)
US2195145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |