US4448998A
Expired / Lapsed
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Catalytic hydrogenation of N,N-disubstituted amides to amines
Assignee: Procter and Gamble Co
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Filing: 1982-11-22
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Granted: 1984-05-15
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Expires: 2002-11-22
Abstract
Abstract N,N-disubstituted amides are hydrogenated to tertiary amines in the presence of a catalyst system comprising copper chromite and zeolite.
Inventors
- 👤 Richard M. King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:46
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/44; C07C209/50; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/868; B01J29/00; B01J29/04; B01J29/06; B01J35/00; B01J35/19
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
79 words
A process for producing tertiary amines containing from about 10 to about 72 carbon atoms by hydrogenation of the corresponding N,N-disubstituted amides, the said process being conducted with gaseous hydrogen at a temperature of from about 200° C. to about 400° C. and a pressure of from about 140 to about 350 kg./sq.cm., and in the presence of a catalyst composition comprising copper chromite and zeolite, the weight ratio of copper chromite:zeolite being from about 10:1 to about 0.1:1.
Claim 2
Dependent Claim
79 words
A process for producing tertiary amines containing from about 10 to about 72 carbon atoms by hydrogenation of the corresponding N,N-disubstituted amides, the said process being conducted with gaseous hydrogen at a temperature of from about 200° C. to about 400° C. and a pressure of from about 140 to about 350 kg./sq.cm., and in the presence of a catalyst composition comprising copper chromite and zeolite, the weight ratio of copper chromite:zeolite being from about 10:1 to about 0.1:1.
Claim 3
Dependent Claim
27 words
The process of claim 1 wherein the amides have the formula ##STR2## wherein R, R', and R" are hydrocarbon radicals of from 1 to 24 carbon atoms.
Claim 4
Dependent Claim
19 words
The process of claim 2 wherein the weight ratio of copper chromite:zeolite is from about 1:1 to about 0.2:1.
Claim 5
Dependent Claim
13 words
The process of claim 3 wherein R, R' and R" are aliphatic radicals.
Claim 6
Dependent Claim
29 words
The process of claim 4 wherein the zeolite in the catalyst composition is selected from the group consisting of Zeolite A, Zeolite X, Zeolite Y, faujasite, chabazite and mordenite.
Claim 7
Dependent Claim
28 words
The process of claim 5 wherein the temperature is from about 260° C. to about 310° C. and the pressure is from about 140 to about 250 kg./sq.cm.
Claim 8
Dependent Claim
16 words
The process of claim 6 wherein the zeolite is Zeolite 4A and the amide is N,N-dimethyllauramide.
Claim 9
Dependent Claim
30 words
A novel catalyst composition comprising a mixture of copper chromite and zeolite in a weight ratio of said copper chromite to said zeolite of from about 10:1 to about 0.1:1.
Claim 10
Dependent Claim
30 words
A novel catalyst composition comprising a mixture of copper chromite and zeolite in a weight ratio of said copper chromite to said zeolite of from about 10:1 to about 0.1:1.
Claim 11
Dependent Claim
16 words
The composition of claim 8 wherein the weight ratio is from about 1:1 to about 0.2:1.
Claim 12
Dependent Claim
25 words
The composition of claim 9 wherein the zeolite is selected from the group consisting of Zeolite A, Zeolite X, Zeolite Y, faujasite, chabazite and mordenite.
Claim 13
Dependent Claim
11 words
The composition of claim 10 wherein the zeolite is Zeolite A.
Claim 14
Dependent Claim
11 words
The composition of claim 11 wherein the zeolite is Zeolite 4A.
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) | 1987-05-15 | 1987-11-14 | 1988-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-15 | 1991-11-14 | 1992-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-15 | 1995-11-14 | 1996-05-15 | $7700.00 | Window Closed / Lapsed |