US2801934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fatty alcohol esters
Assignee: Chempatents Inc
•
Filing: 1952-07-16
•
Granted: 1957-08-06
•
Expires: 1972-07-16
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Rizzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:51
CPC Classifications
C; C09; C09F; C09F5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A PROCESS FOR THE PREPARATION OF CONTROLLED-VISCOSITY SYNTHETIC DRYING OILS WHICH COMPRISES REACTING AN ETHYLENIC ALIPHATIC MONOHYDRIC ALCOHOL OF THE TYPE OCCURRING IN DRYING AND SEMI-DRYING OILS AND HAVING FROM 12 TO 28 CARBON ATOMS IN THE MOLECULE AND BEING SUBSTANTIALLY FREE OF TRIPLY CONJUGATED DOUBLE BONDS WITH A POLYCARBOXYLIC ACID COMPOUND SELECTED FORM THE GROUP CONSISTING OF MALEIC ACID, TRIMELLITIC ACID, PYROMELLIRIC ACID AND THE ANHYDRIDES THEREOF AT A TEMPERATURE IN THE RANGE OF 400 TO 480*F. FOR A TIME IN THE RANGE OF 4 TO 8 HOURS UNTIL THE REACTION MIXTURE HAS A VISCOSITY IN THE RANGE OF 2 TO 70 POISES, AN ACID NUMBER LESS THAN 10, AND A HYDROXYL NUMBER LESS THAN 16.
Claim 2
Dependent Claim
117 words
A PROCESS FOR THE PREPARATION OF CONTROLLED-VISCOSITY SYNTHETIC DRYING OILS WHICH COMPRISES REACTING AN ETHYLENIC ALIPHATIC MONOHYDRIC ALCOHOL OF THE TYPE OCCURRING IN DRYING AND SEMI-DRYING OILS AND HAVING FROM 12 TO 28 CARBON ATOMS IN THE MOLECULE AND BEING SUBSTANTIALLY FREE OF TRIPLY CONJUGATED DOUBLE BONDS WITH A POLYCARBOXYLIC ACID COMPOUND SELECTED FORM THE GROUP CONSISTING OF MALEIC ACID, TRIMELLITIC ACID, PYROMELLIRIC ACID AND THE ANHYDRIDES THEREOF AT A TEMPERATURE IN THE RANGE OF 400 TO 480*F. FOR A TIME IN THE RANGE OF 4 TO 8 HOURS UNTIL THE REACTION MIXTURE HAS A VISCOSITY IN THE RANGE OF 2 TO 70 POISES, AN ACID NUMBER LESS THAN 10, AND A HYDROXYL NUMBER LESS THAN 16.
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) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |