Patent US2822335A successfully refreshed from Google Patents.
US2822335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of detergent mixtures
Assignee: California Research LLC
•
Filing: 1954-06-29
•
Granted: 1958-02-04
•
Expires: 1974-06-29
Abstract
No abstract record available.
Inventors
- 👤 Richard D Stayner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:39
CPC Classifications
C; C11; C11D; C11D11/00; C11D11/04; C11D1/00; C11D1/02; C11D1/37; C11D1/66; C11D1/72; C11D1/12; C11D1/22; C11D1/28; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
A PROCESS FOR PREPARING MIXTURES OF C9-C18 MONOALKYL BENZENE SULFONATES AND SULFATED C2-C7 ALKYLOLAMIDES OF STAIGHT-CHAIN C8-C18 SATURATED FATTY ACIDS BY SULFONATING A C9-C18 MONOALKYL BENZENE WITH AN EXCESS OF SULFURIC ACID VARYING IN STRENGTH FROM 95% H2SO4 TO 30% OLEUM IN A RATIO FROM ABOUT 2.5 TO ABOUT 5.5 MOLS OF 100% H2SO4 PER ONE MOL OF SAID C9-C18 MONOALKYL BENZENE TO FORM A MIXTURE OF A C9-C18 MONOALKYL BENZENE SULFONIC ACID AND FREE SULFURIC ACID; ADJUSTING THE STRENGTH OF FREE SULFURIC ACID IN THE SULFONATION REACTION PRODUCT MIXTURE TO OBTAIN AN EXCESS OF SULFURIC ACID HAVING AN ACID STRENGTH FROM ABOUT 90% H2SO4 TO ABOUT 2% OLEUM; ADDING TO THE MIXTURE OF SAID SULFONIC AND FREE SULFURIC ACIDS FROM 0.25 TO ABOUT 1 MOL OF A C2-C7 ALKYLOLAMIDE OF A STRAIGHT-CHAIN C8-C18 SATURATED FATTY ACID; DIGESTING THE MIXTURE OF ACIDS AND ALKYLOLAMIDE AT ABOUT 30 TO ABOUT 60*C. TO SULFATE THE ALKYLOLAMIDE; NEUTRALIZING THE SULFATION REACTION PRODUCT MIXTURE WITH A BASE TO FORM A MIXTURE OF C9-C18 MONOALKYL BENZENE SULFONATES AND SULFATED C2-C7 ALKYLOLAMIDES OF STRAIGHT-CHAIN C8-C18 SATURATED FATTY ACIDS; AND DRYING THIS MIXTURE TO THE SOLIDPARTICLE FORM.
Claim 2
Dependent Claim
190 words
A PROCESS FOR PREPARING MIXTURES OF C9-C18 MONOALKYL BENZENE SULFONATES AND SULFATED C2-C7 ALKYLOLAMIDES OF STAIGHT-CHAIN C8-C18 SATURATED FATTY ACIDS BY SULFONATING A C9-C18 MONOALKYL BENZENE WITH AN EXCESS OF SULFURIC ACID VARYING IN STRENGTH FROM 95% H2SO4 TO 30% OLEUM IN A RATIO FROM ABOUT 2.5 TO ABOUT 5.5 MOLS OF 100% H2SO4 PER ONE MOL OF SAID C9-C18 MONOALKYL BENZENE TO FORM A MIXTURE OF A C9-C18 MONOALKYL BENZENE SULFONIC ACID AND FREE SULFURIC ACID; ADJUSTING THE STRENGTH OF FREE SULFURIC ACID IN THE SULFONATION REACTION PRODUCT MIXTURE TO OBTAIN AN EXCESS OF SULFURIC ACID HAVING AN ACID STRENGTH FROM ABOUT 90% H2SO4 TO ABOUT 2% OLEUM; ADDING TO THE MIXTURE OF SAID SULFONIC AND FREE SULFURIC ACIDS FROM 0.25 TO ABOUT 1 MOL OF A C2-C7 ALKYLOLAMIDE OF A STRAIGHT-CHAIN C8-C18 SATURATED FATTY ACID; DIGESTING THE MIXTURE OF ACIDS AND ALKYLOLAMIDE AT ABOUT 30 TO ABOUT 60*C. TO SULFATE THE ALKYLOLAMIDE; NEUTRALIZING THE SULFATION REACTION PRODUCT MIXTURE WITH A BASE TO FORM A MIXTURE OF C9-C18 MONOALKYL BENZENE SULFONATES AND SULFATED C2-C7 ALKYLOLAMIDES OF STRAIGHT-CHAIN C8-C18 SATURATED FATTY ACIDS; AND DRYING THIS MIXTURE TO THE SOLIDPARTICLE FORM.
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) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |