US4495369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of neopentylamine
Assignee: Bayer AG
•
Filing: 1981-09-22
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Granted: 1985-01-22
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Expires: 2001-09-22
Abstract
Abstract A process for the preparation of neopentylamine which is virtually free from amines with a higher degree of alkylation which comprises contacting neopentanol with ammonia at a temperature of 200° to 300° C. in the presence of a hydrogenation catalyst. The process can be carried out under increased pressure and in the presence of catalytic amounts of hydrogen.
Inventors
- 👤 Friedrich Werner
- 👤 Heinz U. Blank
- 👤 Gunther Gramm
- 👤 Rudolf Braden
- 👤 Heinz Ziemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:16
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/04; C07C209/14; C07C209/16
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
40 words
A process for the preparation of neopentylamino which is virtually free from amines with a higher degree of alkylation which comprises contacting neopentanol with ammonia at a temperature of 200° to 300° C. in the presence of a hydrogenation catalyst.
Claim 2
Dependent Claim
40 words
A process for the preparation of neopentylamino which is virtually free from amines with a higher degree of alkylation which comprises contacting neopentanol with ammonia at a temperature of 200° to 300° C. in the presence of a hydrogenation catalyst.
Claim 3
Dependent Claim
24 words
A process according to claim 1, wherein the reaction is carried out in the liquid phase under a pressure of at least 10 bars.
Claim 4
Dependent Claim
13 words
A process according to claim 1, wherein the reaction is carried out continuously.
Claim 5
Dependent Claim
19 words
A process according to claim 1, wherein 0.5 to 10 mols of ammonia are employed per mol of neopentanol.
Claim 6
Dependent Claim
19 words
A process according to claim 1, wherein 1 to 5 mols of ammonia are employed per mol of neopentanol.
Claim 7
Dependent Claim
26 words
A process according to claim 1, wherein the reaction is carried out in the presence of 0.001 to 1 mol of hydrogen per mol of neopentanol.
Claim 8
Dependent Claim
52 words
A process according to claim 1, wherein the hydrogenation catalyst contains at least one metal from group VIII of the periodic system (Mendeleev) and/or copper or at least one of these metals in combination with at least one metal from the group comprising vanadium, chromium and manganese, in metallic and/or oxidic form.
Claim 9
Dependent Claim
16 words
A process according to claim 1, wherein the catalyst contains nickel in metallic or oxidic form.
Claim 10
Dependent Claim
17 words
A process according to claim 1, wherein the process is carried out in the presence of hydrogen.
Claim 11
Dependent Claim
19 words
A process according to claim 9, wherein 0.5 to 10 mols of ammonia are employed per mol of neopentanol.
Claim 12
Dependent Claim
19 words
A process according to claim 10, wherein 1 to 5 mols of ammonia are employed per mol of neopentanol.
References Cited (Backward Citations)
US4078003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-22 | 1988-07-23 | 1989-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-22 | 1992-07-23 | 1993-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-22 | 1996-07-23 | 1997-01-22 | $7700.00 | Window Closed / Lapsed |