Patent US2822387A successfully refreshed from Google Patents.
US2822387A
Expired / Lapsed
US
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Method of producing sulfonated alkanes
Assignee: Universal Oil Products Co
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Filing: 1955-12-07
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Granted: 1958-02-04
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Expires: 1975-12-07
Abstract
No abstract record available.
Inventors
- 👤 Herman S Bloch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:27
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/02; C07C309/03; C07C309/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A METHOD FOR CONVERTING AN ALKANE CARBOXYLIC ACIDCONTAINING FROM 4 TO ABOUT 24 CARBON ATOMS PER MOLECULE AND NOT MORE THAN TWO CARBOXYLIC ACID GROUPS PER MOLECULE TO A SULFONATED ALKANE WHICH COMPRISES SULFONATING SAID CARBOXYLIC ACID, CONVERTING THE RESULTING SULFONATED CARBOXYLIC ACID TO ITS SULFONATE PARTIAL-SALT FREE OF CARBOXYLATE SALTS BY NEUTRALIZING ONLY THE SULFO RADICALS OF THE LAST-NAMED ACID AND THEREAFTER HEATING SAID SALT AT A TEMPERATURE OF FROM ABOUT 100* TO ABOUT 350*C. TO FORM SAID SULFONATED ALKANE.
Claim 2
Independent Claim
81 words
A METHOD FOR CONVERTING AN ALKANE CARBOXYLIC ACIDCONTAINING FROM 4 TO ABOUT 24 CARBON ATOMS PER MOLECULE AND NOT MORE THAN TWO CARBOXYLIC ACID GROUPS PER MOLECULE TO A SULFONATED ALKANE WHICH COMPRISES SULFONATING SAID CARBOXYLIC ACID, CONVERTING THE RESULTING SULFONATED CARBOXYLIC ACID TO ITS SULFONATE PARTIAL-SALT FREE OF CARBOXYLATE SALTS BY NEUTRALIZING ONLY THE SULFO RADICALS OF THE LAST-NAMED ACID AND THEREAFTER HEATING SAID SALT AT A TEMPERATURE OF FROM ABOUT 100* TO ABOUT 350*C. TO FORM SAID SULFONATED ALKANE.
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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 |