US2642455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-ethyl-hexanol-1 esters of the friedel-crafts maleic anhydride-aromatic hydrocarbon adducts and process
Assignee: ExxonMobil Oil Corp
•
Filing: 1951-02-06
•
Granted: 1953-06-16
•
Expires: 1971-02-06
Abstract
No abstract record available.
Inventors
- 👤 Paul F Bruins
- 👤 Edwin P Wilkinson
- 👤 Ernst P Rittershausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:43
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
ESTERIFIED AROMATIC HYDROCARBONS OBTAINED BY: REACTING, AT A TEMPERATURE BETWEEN ABOUT 200* F. AND ABOUT 250* F. AND IN THE PRESENCE OF A FRIEDEL-CRAFTS CATALYST, ONE MOLAR PROPORTION OF AN AROMATIC HYDROCARBON FRACTION CONTAINING AT LEAST ABOUT SEVENTY PER CENT OF AROMATIC HYDROCARBONS AND HAVING A BOILING POINT OF AT LEAST ABOUT 450* F. AND LESS THAN ABOUT 800* F., WITH FROM ABOUT 0.20 TO ABOUT ONE MOLAR PROPORTION OF MALEIC ANHYDRIDE TO FORM AN ACIDIC REACTION PRODUCT, AND REACTING, AT A TEMPERATURE BETWEEN ABOUT 150* F. AND ABOUT 220* F., SAID ACIDIC REACTION PRODUCT WITH 2-ETHYL-HEXANOL-1 HAVING ABOUT EIGHT CARBON ATOMS PER MOLECULE, TO FORM SAID ESTERIFIED AROMATIC HYDROCARBONS.
Claim 2
Dependent Claim
110 words
ESTERIFIED AROMATIC HYDROCARBONS OBTAINED BY: REACTING, AT A TEMPERATURE BETWEEN ABOUT 200* F. AND ABOUT 250* F. AND IN THE PRESENCE OF A FRIEDEL-CRAFTS CATALYST, ONE MOLAR PROPORTION OF AN AROMATIC HYDROCARBON FRACTION CONTAINING AT LEAST ABOUT SEVENTY PER CENT OF AROMATIC HYDROCARBONS AND HAVING A BOILING POINT OF AT LEAST ABOUT 450* F. AND LESS THAN ABOUT 800* F., WITH FROM ABOUT 0.20 TO ABOUT ONE MOLAR PROPORTION OF MALEIC ANHYDRIDE TO FORM AN ACIDIC REACTION PRODUCT, AND REACTING, AT A TEMPERATURE BETWEEN ABOUT 150* F. AND ABOUT 220* F., SAID ACIDIC REACTION PRODUCT WITH 2-ETHYL-HEXANOL-1 HAVING ABOUT EIGHT CARBON ATOMS PER MOLECULE, TO FORM SAID ESTERIFIED AROMATIC HYDROCARBONS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |