US3758586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic addition of secondary aliphatic amines to ethylene in presence of rhodium or iridium salts
Assignee: EIDP Inc
•
Filing: 1970-03-16
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Granted: 1973-09-11
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Expires: 1990-03-16
Abstract
Abstract Ethylene is reacted with a secondary aliphatic amine in the presence of rhodium or iridium catalysts to produce tertiary amines. The process is characterized in producing little or no by-products.
Inventors
- 👤 D Coulson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:52
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/60
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
13 words
The process of claim 1 in which the catalyst is dissolved in tetrahydrofuran.
Claim 2
Dependent Claim
16 words
The process of claim 1 carried out in the range of 100* C. to 230* C.
Claim 3
Dependent Claim
16 words
The process of claim 1 carried out in the range of 200 to 1, 000 lbs./sq.in.
Claim 4
Dependent Claim
18 words
The process of claim 1 wherein the molar ratio of ethylene to secondary amine is 1:1 or greater.
Claim 5
Dependent Claim
12 words
The process of claim 1 wherein the catalyst is di- Mu -chlorobis(1,5-cyclooctadiene)dirhodium(I).
Claim 6
Dependent Claim
11 words
The process of claim 1 in which the catalyst is RhCl3.
Claim 7
Dependent Claim
11 words
The process of claim 1 in which the catalyst is IrCl3.
Claim 8
Dependent Claim
29 words
A process according to claim 1 wherein the catalyst is selected from the group consisting of di- Mu -chlorobis(1,5-cyclooctadiene)dirhodium(I), rhodium trichloride trihydrate, rhodium tribromide trihydrate, and iridium trichloride trihydrate.
Claim 9
Dependent Claim
39 words
A process according to claim 1 for the production of N,N-dimethylethylamine consisting essentially of reacting ethylene with dimethylamine in the presence of a catalyst selected from di- Mu -chlorobis(1,5-cyclooctadiene)-dirhodium(I), rhodium trichloride trihydrate, rhodium tribromide trihydrate and iridium trichloride trihydrate.
Claim 10
Dependent Claim
12 words
A process according to claim 10 wherein the catalyst is di-Mu -chlorobis(1,5-cyclooctadiene)dirhodium(I).
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |