US2529538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonation of olefins
Assignee: Procter and Gamble Co
•
Filing: 1948-07-13
•
Granted: 1950-11-14
•
Expires: 1968-07-13
Abstract
No abstract record available.
Inventors
- 👤 Ronald A Henry
- 👤 John S Brod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:26
CPC Classifications
C; C11; C11C; C11C3/00; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
THE PROCESS OF PREPARING WETTING, SUDSING AND WASHING AGENTS WHICH COMPRISES ADMIXING A HIGH MOLECULAR ALLYL ESTER WITH OLEUM CONTAINING FROM 30 PER CENT TO 60 PER CENT FREE SULFUR TRIOXIDE BY WEIGHT TO EFFECT REACTION BETWEEN SAID ESTER AND SAID OLEUM, THE OLEUM BEING ADDED TO THE ESTER IN SUCH MANNER AND AMOUNT THAT THE MOLAR RATIO OF FREE SULFUR TRIOXIDE ADDED:ALLYL ESTER LES ABOVE LINE B OF FIGURE 1 WHEN ALL OF THE OLEUM HAS BEEN ADDED, BUT AT NO TIME DURING THE ADDITION LIES SUBSTANTIALLY ABOVE LINE A, WHILE RESTRAINING THE TEMPERATURE OF THE REACTION MIXTURE FROM RISING SUBSTANTIALLY ABOVE 60* C.; THEREAFTER ADMIXING THE ACID MIXTURE WITH A HIGH MOLECULAR AOLEFINE, TO CAUSE REACTION THERE WITH WHILE RESTRAINING THE TEMPERATURE OF THE REACTION MIXTURE FROM RISING SUBSTANTIALLY ABOVER 60*C.; AND THEREAFTER NEUTRALIZING THE PRODUCT TO FORM A WATER-SOLUBLE SALT BY MIXING THEREWITH AN ALKALINE NEUTRALIZING AGENT IN SUCH MANNER THAT THE MIXTURE IS AT NO TIME SUBSTANTIALLY ALKALINE AND WHILE RESTRAINING THE TEMPERATURE FROM RISING SUBSTANTIALLY ABOVE 50*C.
Claim 2
Dependent Claim
172 words
THE PROCESS OF PREPARING WETTING, SUDSING AND WASHING AGENTS WHICH COMPRISES ADMIXING A HIGH MOLECULAR ALLYL ESTER WITH OLEUM CONTAINING FROM 30 PER CENT TO 60 PER CENT FREE SULFUR TRIOXIDE BY WEIGHT TO EFFECT REACTION BETWEEN SAID ESTER AND SAID OLEUM, THE OLEUM BEING ADDED TO THE ESTER IN SUCH MANNER AND AMOUNT THAT THE MOLAR RATIO OF FREE SULFUR TRIOXIDE ADDED:ALLYL ESTER LES ABOVE LINE B OF FIGURE 1 WHEN ALL OF THE OLEUM HAS BEEN ADDED, BUT AT NO TIME DURING THE ADDITION LIES SUBSTANTIALLY ABOVE LINE A, WHILE RESTRAINING THE TEMPERATURE OF THE REACTION MIXTURE FROM RISING SUBSTANTIALLY ABOVE 60* C.; THEREAFTER ADMIXING THE ACID MIXTURE WITH A HIGH MOLECULAR AOLEFINE, TO CAUSE REACTION THERE WITH WHILE RESTRAINING THE TEMPERATURE OF THE REACTION MIXTURE FROM RISING SUBSTANTIALLY ABOVER 60*C.; AND THEREAFTER NEUTRALIZING THE PRODUCT TO FORM A WATER-SOLUBLE SALT BY MIXING THEREWITH AN ALKALINE NEUTRALIZING AGENT IN SUCH MANNER THAT THE MIXTURE IS AT NO TIME SUBSTANTIALLY ALKALINE AND WHILE RESTRAINING THE TEMPERATURE FROM RISING SUBSTANTIALLY ABOVE 50*C.
References Cited (Backward Citations)
US2240920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |