US3098094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of carboxylic acids and salts thereof from asphaltenes
Assignee: Phillips Petroleum Co
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Filing: 1960-05-09
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Granted: 1963-07-16
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Expires: 1980-05-09
Abstract
No abstract record available.
Inventors
- 👤 Armin C Pitchford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:16
CPC Classifications
C; C07; C07C; C07C205/00; C07C205/49
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A METHOD COMPRISING SEPARATING ASPHALTENES FROM ASPHALT BY SOLVENT EXTRACTION, TREATING SAID SEPARATED ASPHALTENES WITH AN OXIDIZING AGENT CONSISTING ESSENTIALLY OF NITRIC ACID HAVNG A CONCENTRATION IN THE RANGE BETWEEN 10 TO 70 WEIGHT PERCENT AT AN ACID/ASPHALTENE WEIGHT RATIO IN THE RANGE BETWEEN 1/2 TO 10/1 AND AT A TEMPERATURE IN THE RANGE BETWEEN 150 350* V., SEPARATING THE RESULTING ING WATER INSOLUBLE RESIDUE COMPRISING ASPHALTENE CARBOXYLIC ACIDS FROM THE RESULTING REACTION MIXTURE, NEUTRALIZING THE LATTER WITH A BASIC NEUTRALIZING AGENT SELECTED FROM THE GROUP CONSISTING OF AMMONIA, PRIMARY MONOAMINES HAVING 1 TO 20 CARBON ATOMS PER MOLECULE, DIAMINES HAVNG 3 TO 30 CARBON ATOMS PER MOLECULE, ALKALI METAL SALTS, ALKALI METAL OXIDES, ALKALI META HYDROXIDES, ALKALINE EARTH METAL SALTS, ALKALINE EARTH METAL OXIDES, AND ALKALINE EARTH METAL HYDROXIDES, AND SEPARATING FROM THE RESULTING NEUTRALIZED MIXTURE THE RESULTING WATER SOLUBLE ASPHALTENE CARBOXYLIC ACID SALTS.
Claim 2
Independent Claim
145 words
A METHOD COMPRISING SEPARATING ASPHALTENES FROM ASPHALT BY SOLVENT EXTRACTION, TREATING SAID SEPARATED ASPHALTENES WITH AN OXIDIZING AGENT CONSISTING ESSENTIALLY OF NITRIC ACID HAVNG A CONCENTRATION IN THE RANGE BETWEEN 10 TO 70 WEIGHT PERCENT AT AN ACID/ASPHALTENE WEIGHT RATIO IN THE RANGE BETWEEN 1/2 TO 10/1 AND AT A TEMPERATURE IN THE RANGE BETWEEN 150 350* V., SEPARATING THE RESULTING ING WATER INSOLUBLE RESIDUE COMPRISING ASPHALTENE CARBOXYLIC ACIDS FROM THE RESULTING REACTION MIXTURE, NEUTRALIZING THE LATTER WITH A BASIC NEUTRALIZING AGENT SELECTED FROM THE GROUP CONSISTING OF AMMONIA, PRIMARY MONOAMINES HAVING 1 TO 20 CARBON ATOMS PER MOLECULE, DIAMINES HAVNG 3 TO 30 CARBON ATOMS PER MOLECULE, ALKALI METAL SALTS, ALKALI METAL OXIDES, ALKALI META HYDROXIDES, ALKALINE EARTH METAL SALTS, ALKALINE EARTH METAL OXIDES, AND ALKALINE EARTH METAL HYDROXIDES, AND SEPARATING FROM THE RESULTING NEUTRALIZED MIXTURE THE RESULTING WATER SOLUBLE ASPHALTENE CARBOXYLIC ACID SALTS.
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) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |