US4847411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,6-hexanediamides from 3-pentenamides
Assignee: Standard Oil Co
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Filing: 1985-05-03
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Granted: 1989-07-11
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Expires: 2005-05-03
Abstract
Abstract A process for making a diamide of the formula ##STR1## by reacting a monoamide compound of the formula ##STR2## with CO and an amine or ammonia of the formula R 7 R 8 NH in the liquid phase under essentially anhydrous conditions at a temperature in the range from 120° to 210° C., where each of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 is selected independently from H and a C 1 to C 12 hydrocarbyl containing no ethylenic or acetylenic unsaturation.
Inventors
- 👤 Mark C. Cesa
- 👤 Robert A. Dubbert
- 👤 James D. Burrington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:52
CPC Classifications
C; C07; C07C; C07C237/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
98 words
A process for making a diamide of the formula ##STR5## by reacting a monoamide compound of the formula ##STR6## with CO and an amine or ammonia of the formula R 7 R 8 NH in the liquid phase under essentially anhydrous conditions at a temperature in the range from 120° to 210° C., where each of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 is selected independently from H and a C 1 to C 12 hydrocarbyl containing no ethylenic or acetylenic unsaturation.
Claim 2
Dependent Claim
98 words
A process for making a diamide of the formula ##STR5## by reacting a monoamide compound of the formula ##STR6## with CO and an amine or ammonia of the formula R 7 R 8 NH in the liquid phase under essentially anhydrous conditions at a temperature in the range from 120° to 210° C., where each of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 is selected independently from H and a C 1 to C 12 hydrocarbyl containing no ethylenic or acetylenic unsaturation.
Claim 3
Dependent Claim
13 words
A process of claim 1 where R 7 and R 8 are H.
Claim 4
Dependent Claim
18 words
A process of claim 1 where R 7 and R 8 are H and the monoamide is 3-pentenamide.
Claim 5
Dependent Claim
45 words
A process of claim 1 where R 7 and R 8 are H wherein each of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 is an alkyl group or H.
Claim 6
Dependent Claim
13 words
A process of claim 5 wherein the said monoamide has 5-17 carbon atoms.
References Cited (Backward Citations)
US2542766A
Cited
US4331612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |