Patent US563709A successfully refreshed from Google Patents.
Patent US3275585A successfully refreshed from Google Patents.
US3275585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt-containing compositions and method for their preparation
Assignee: Mobil Oil AS
•
Filing: 1964-06-15
•
Granted: 1966-09-27
•
Expires: 1984-06-15
Abstract
No abstract record available.
Inventors
- 👤 Lester A H Baum
- 👤 Paul F Bruins
- 👤 Henschel Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:21
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/02; C10C3/026
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
60 words
AN IMPROVED ASPHALTIC COMPOSITION OBTAINED BY REACTING A MAJOR PROPORTION OF A PETROLEUM ASPHALT WITH A MINOR PROPORTION OF AN ALDEHYDE, IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF TOLUENE SULFONIC ACID, PARATOLUENE SULFONIC ACID AND THE ACIDIC RESISDUE FROM THE SULFURIC ACID REFINING OF TALL OIL, AT A TEMPERATURE FROM ABOUT 150*F. TO ABOUT 600*F.
Claim 2
Dependent Claim
113 words
A COMPOSITION COMPRISING ABOUT 4-10%, BY WEIGHT OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF FURFURAL AND FURFUAL POLYMERS AND ABOUT 90-96%, BY WEIGHT OF A PETROLEUM ASPHALT, IN THE FORM OF A THERMOSETTING POLYMER OBTAINED BY SUBJECTING THE COMMINGLED MATERIAL TO A TREATMENT AT A TEMPERATURE OF 185-400*F. FOR A PERIOD OF 1-6 HOURS, IN THE PRESENCE OF A CATALYST IN THE AMOUNT OF 1-6%, BY WEIGHT, AND SELECTED FROM THE GROUP CONSISTING OF TOLUENE SULFONIC ACID, PARATOLUENE SULFONIC ACID AND THE ACIDIC RESIDUE FROM THE SULFURIC ACID REFINING OF TALL OIL, WHEREBY AN ASPHALTIC POLYMER IS OBTAINED HAVING IMPROVED THERMOSETTING PROPERTIES AND A SUBSTANTIALLY ELEVATED R. & B. SOFTENING POINT.
Claim 3
Dependent Claim
77 words
THE COMPOSITION OF CLAIM 8 FURTHER CHARACTERIZED IN THAT SAID COMPOSITION FOLLOWING THE AFOREMETIONED TREATMENT IS COMMINGLED WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF PHOSPHORIC ACID AND BORON FLUORIDE ETHERATE IN THE AMOUNT OF UP TO 5%, BY WEIGHT, OF THE FINAL MIXTURE AND IS TREATED FOR AN ADDITIONAL TREATMENT TIME OF 1.4 TO 2 HOURS AT A TEMPERATURE OF 300*F. TO 400*F. WHEREBY THE PRODUCT IS FURTHER RAISED IN SOFTENING POINT AND SOLVENT RESISTANCE.
References Cited (Backward Citations)
US2314181A
Cited
US2290833A
Cited
US2612445A
Cited
US2689237A
Cited
US2764523A
Cited
US2861895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |