US3176038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction of a mono-unsaturated monocarboxylic acid ester, co, and alkanol and an rh2ocatalyst to produce an unsaturated dicarboxylic acid diester
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1961-11-06
•
Granted: 1965-03-30
•
Expires: 1981-11-06
Abstract
No abstract record available.
Inventors
- 👤 Zachry James Bryan
- 👤 Aldridge Clyde Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:20
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/52; C07C69/533; C07C69/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A PROCESS FOR PRODUCING AN ETHYLENICALLY UNSATURATED DIESTER WHICH COMPRISES CONTACTING A REACTION MIXTURE CONTAINING AN UNSUBSTITUTED C4 TO C25 ALPHA, BETA MONO-ETHYLENICALLY UNSATURATED ALIPHATIC CARBOXYLIC ACID MONOESTER AND A C4 TO C20 ALKANOL, AT LEAST 2 MOLES OF SAID ALKANOL BEING PRESENT IN SAID REACTION MIXTURE PER MOLE OF SAID UNSATURATED ESTER, WITH SUBSTANTIALLY HYDROGEN-FREE CARBON MONOXIDE IN THE PRESENCE OF 0.001 TO 5 WT. PERCENT, CALCULATED AS METAL ON SAID UNSATURATED ESTER, OF A RHODIUM OXIDE CATALYST AT A TEMERATURE BETWEEN 125 AND 225* C. AND A CARBON MONOXIDE PARTIAL PRESSURE IN THE RANGE OF 500-3000 P.S.I.G. FOR A TIME SUFFICIENT TO PRODUCE SAID ETHYLENICALLY UNSATURATED DIESTER AND THEN RECOVERING SAID DIESTER.
Claim 2
Dependent Claim
114 words
A PROCESS FOR PRODUCING AN ETHYLENICALLY UNSATURATED DIESTER WHICH COMPRISES CONTACTING A REACTION MIXTURE CONTAINING AN UNSUBSTITUTED C4 TO C25 ALPHA, BETA MONO-ETHYLENICALLY UNSATURATED ALIPHATIC CARBOXYLIC ACID MONOESTER AND A C4 TO C20 ALKANOL, AT LEAST 2 MOLES OF SAID ALKANOL BEING PRESENT IN SAID REACTION MIXTURE PER MOLE OF SAID UNSATURATED ESTER, WITH SUBSTANTIALLY HYDROGEN-FREE CARBON MONOXIDE IN THE PRESENCE OF 0.001 TO 5 WT. PERCENT, CALCULATED AS METAL ON SAID UNSATURATED ESTER, OF A RHODIUM OXIDE CATALYST AT A TEMERATURE BETWEEN 125 AND 225* C. AND A CARBON MONOXIDE PARTIAL PRESSURE IN THE RANGE OF 500-3000 P.S.I.G. FOR A TIME SUFFICIENT TO PRODUCE SAID ETHYLENICALLY UNSATURATED DIESTER AND THEN RECOVERING SAID DIESTER.
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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |