US3755429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of sulfonated detergent composition
Assignee: Procter and Gamble Co
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Filing: 1971-10-12
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Granted: 1973-08-28
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Expires: 1991-10-12
Abstract
Abstract A PROCESS FOR PREPARING A WATER-SOLUBLE SULFONATED REACTION PRODUCT HAVING EXELLENT DETERGENT PROPERTIES WHICH USES ALPHA-OLEFINS AS THE STARTING REACTANT. THE PROCESS COMPRISES, AS THE FIRST STEPH, REACTING EACH MOLE OF ALPHA OLEFIN WITH 1.0 TO 1.25 MOLES SULFUR TRIOXIDE IN A FILM REACTOR UNDER PROCESS CONDITIONS OF A REACTION TIME OF BETWEEN 12 SECONDS AND 50 SECONDS, A TEMPERATURE OF 32*F. TO 180*F., AND A PRESSURE OF 8 P.S.I.G. TO 20 P.S.I.G. AT THE TOP OF THE REACTOR. THIS REACTION MIX IS THEREAFTER IMMEDIATELY REACTED WITH A LOWER ALCOHOL AND IS THEN NEUTRALIZED AND HYDROLYZED TO PRODUCE A VALUABLE DETERGENT COMPOSITION.
Inventors
- 👤 H Smitherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:58
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/02; C11D1/12; C11D1/14; C11D1/143; C07; C07C; C07C303/00; C07C303/02; C07C303/04; C07C303/06; C07C303/32; C07C303/42; C07C303/44; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |