US3344047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic preparation of sulfonic acids
Assignee: Sunoco Inc
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Filing: 1964-10-23
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Granted: 1967-09-26
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Expires: 1984-10-23
Abstract
No abstract record available.
Inventors
- 👤 William C Neikam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:54
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/28; C07C309/33; C07C309/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
METHOD OF PREPARING SULFONIC ACID IN AN ELECTROLYTIC CELL CONTAINING AN ANODE AND A CATHODE WHICH COMPRISES ELECTROLYZING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF NON-AROMATIC HYDROCARBONS CONTAINING CONJUGATED UNSATURATION, SUBSTITUTED AROMATIC HYDROCARBONS WHEREIN THE SUBSTITUENT CONTAINS CONJUGATED UNSATURATION, AND POLYCYCLIC HYDROCARBONS HAVING A CONDENSED AROMATIC RING, SAID ELECTROLYZING BEING (1) IN THE PRESENCE OF AN ELECTROLYTE, (2) IN THE PRESENCE OF A MUTUAL SOLVENT FOR SAID ELECTROLYTE AND SAID COMPOUND, (3) IN THE PRESENCE OF SULFUR DIOXIDE AND OXYGEN, AND (4) AT A POTENTIAL MORE NEGATIVE THAN THE HALF-WAVE POTENTIAL OF SAID COMPOUND, SAID COMPOUND BEING PRESENT AT THE SURFACE OF SAID CATHODE DURING SAID ELECTROLYZING, WHEREBY A SULFONIC ACID ANION IS PRODUCED, AND REACTING SAID SULFONIC ACID ANION IN SITU WITH HYDROGEN ION TO FORM SULFONIC ACID.
Claim 2
Dependent Claim
130 words
METHOD OF PREPARING SULFONIC ACID IN AN ELECTROLYTIC CELL CONTAINING AN ANODE AND A CATHODE WHICH COMPRISES ELECTROLYZING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF NON-AROMATIC HYDROCARBONS CONTAINING CONJUGATED UNSATURATION, SUBSTITUTED AROMATIC HYDROCARBONS WHEREIN THE SUBSTITUENT CONTAINS CONJUGATED UNSATURATION, AND POLYCYCLIC HYDROCARBONS HAVING A CONDENSED AROMATIC RING, SAID ELECTROLYZING BEING (1) IN THE PRESENCE OF AN ELECTROLYTE, (2) IN THE PRESENCE OF A MUTUAL SOLVENT FOR SAID ELECTROLYTE AND SAID COMPOUND, (3) IN THE PRESENCE OF SULFUR DIOXIDE AND OXYGEN, AND (4) AT A POTENTIAL MORE NEGATIVE THAN THE HALF-WAVE POTENTIAL OF SAID COMPOUND, SAID COMPOUND BEING PRESENT AT THE SURFACE OF SAID CATHODE DURING SAID ELECTROLYZING, WHEREBY A SULFONIC ACID ANION IS PRODUCED, AND REACTING SAID SULFONIC ACID ANION IN SITU WITH HYDROGEN ION TO FORM SULFONIC ACID.
References Cited (Backward Citations)
US3214356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |