US4191709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of amines from alcohols with zeolite FU-1 catalysts
Assignee: Imperial Chemical Industries Ltd
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Filing: 1979-01-29
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Granted: 1980-03-04
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Expires: 1999-01-29
Abstract
Abstract A process for the manufacture of an amine by reacting an alcohol, for example methanol, with ammonia at an elevated temperature in the presence of the hydrogen form of zeolite FU-1 or zeolite FU-1 in which some or all of the protons have been replaced by bivalent or trivalent cations.
Inventors
- 👤 David G. Parker
- 👤 Alan J. Tompsett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:23
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0234; B01J31/0235; B01J31/0254; B01J29/00; B01J29/04; B01J29/06; B01J29/70; B01J2231/00; B01J2231/40; B01J31/0239
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
49 words
A process for the manufacture of an amine which comprises reacting an alcohol with ammonia at an elevated temperature in the presence of either the hydrogen form of zeolite FU-1 or zeolite FU-1 in which some or all of the protons have been replaced by bivalent or trivalent cations.
Claim 2
Dependent Claim
49 words
A process for the manufacture of an amine which comprises reacting an alcohol with ammonia at an elevated temperature in the presence of either the hydrogen form of zeolite FU-1 or zeolite FU-1 in which some or all of the protons have been replaced by bivalent or trivalent cations.
Claim 3
Dependent Claim
33 words
A process as claimed in claim 1 in which the alkali metal oxide content of zeolite FU-1 used in the process is less than 500 ppm w/w calculated as equivalent Na 2 O.
Claim 4
Dependent Claim
29 words
A process as claimed in claim 1 in which the quaternary ammonium content of zeolite FU-1 used in the process is less than 2% calculated w/w as elemental carbon.
Claim 5
Dependent Claim
40 words
A process as claimed in claim 1 in which the hydrogen form of zeolite FU-1 is used and in which the zeolite is activated before use by heating it to a temperature in the range of 300° to 600° C.
Claim 6
Dependent Claim
29 words
A process as claimed in claim 1 in which the form of zeolite FU-1 used has some or all of the protons replaced by calcium or rare-earth metal cations.
Claim 7
Dependent Claim
21 words
A process as claimed in claim 1 in which the alcohol is a lower (C 1 to C 6 ) alkanol.
Claim 8
Dependent Claim
20 words
A process as claimed in claim 1 in which the molar ratio of ammonia to alcohol is at least 0.25:1.
Claim 9
Dependent Claim
35 words
A process as claimed in claim 1 in which the process is carried out at a temperature in the range 200° to 600° C. and at a pressure in the range 5 to 100 atmospheres.
Claim 10
Dependent Claim
64 words
A process as claimed in claim 1 for the manufacture of methylamine which comprises reacting methanol and ammonia at a molar ratio of ammonia to methanol in the range 0.5:1 to 5:1, at a temperature in the range 300° to 500° C., at a pressure in the range of 10 to 30 atmospheres and in the presence of the hydrogen form of zeolite FU-1.
References Cited (Backward Citations)
US3384667A
Cited
GB1117568A
Cited
US3849463A
Cited
US4082805A
Cited
US4021447A
Cited
US4060590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-04 | 1983-09-03 | 1984-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-04 | 1987-09-03 | 1988-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-04 | 1991-09-03 | 1992-03-04 | $7700.00 | Window Closed / Lapsed |