Patent US3929889A successfully refreshed from Google Patents.
US3929889A
Expired / Lapsed
US
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Synthesis of aromatic amines by reaction of aromatic compounds with ammonia
Assignee: EIDP Inc
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Filing: 1973-12-19
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Granted: 1975-12-30
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Expires: 1993-12-19
Abstract
Abstract An improved process for producing an aromatic amine is provided in which an aromatic compound is reacted with ammonia in the presence of a conditioned nickel/nickel oxide cataloreactant at a temperature of from about 150*C. to about 500*C. and at a pressure of from about 10 to about 1000 atmospheres.
Inventors
- 👤 Edward Noonan Squire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:25
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/02; C07C213/00; C07C213/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
98 words
A PROCESS FOR ADMINATING AN AROMATIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIPHENYL ETHER, MONAMINO DERIVATIVES THEREOF, BENZENE, ANILINE WITH THE AROMATIC COMPOUND AT COMPRISING REACTING AMMONIA WITH THE AROMATIC COMPOUND AT A TEMPERATURE OF FROM 150*C. TO 500*C. AND AT A PRESSURE OF FROM 10 TO 1000 ATMOSPHERES IN THE PRESENCE OF A NICKEL/NICKEL OXIDE CATALOREACTANT WHICH HAS BEEN PARTIALLY REDUCED TO ELEMENTAL NICKEL AND THEREAFTER OXIDIZED TO FORM A CATALOREACTANT HAVING A MOLE RATIO OF NICKEL TO NICKEL OXIDE OF 0.0001:1 TO 10:1, SAID AMMONIA AND AROMATIC COMPOUND BEING IN INTIMATE CONTACT WITH SAID CATALOREACTANT.
Claim 2
Dependent Claim
98 words
A PROCESS FOR ADMINATING AN AROMATIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIPHENYL ETHER, MONAMINO DERIVATIVES THEREOF, BENZENE, ANILINE WITH THE AROMATIC COMPOUND AT COMPRISING REACTING AMMONIA WITH THE AROMATIC COMPOUND AT A TEMPERATURE OF FROM 150*C. TO 500*C. AND AT A PRESSURE OF FROM 10 TO 1000 ATMOSPHERES IN THE PRESENCE OF A NICKEL/NICKEL OXIDE CATALOREACTANT WHICH HAS BEEN PARTIALLY REDUCED TO ELEMENTAL NICKEL AND THEREAFTER OXIDIZED TO FORM A CATALOREACTANT HAVING A MOLE RATIO OF NICKEL TO NICKEL OXIDE OF 0.0001:1 TO 10:1, SAID AMMONIA AND AROMATIC COMPOUND BEING IN INTIMATE CONTACT WITH SAID CATALOREACTANT.
Claim 3
Dependent Claim
38 words
The process of claim 1 wherein the cataloreactant contains a member selected from the group consisting of oxides and carbonates of zirconium, strontium, barium, calcium, magnesium, zinc, iron, titanium, aluminum, silicon, cerium, thorium, uranium and the alkali metals.
Claim 4
Dependent Claim
11 words
The process of claim 2 wherein the cataloreactant contains zirconium oxide.
Claim 5
Dependent Claim
26 words
The process of claim 3 wherein the mole ratio of total nickel to zirconium oxide expressed as total nickel to zirconium is 0.1: 1 to 100:1.
Claim 6
Dependent Claim
12 words
The process of claim 1 wherein the temperature is 200*C. to 500*C.
Claim 7
Dependent Claim
13 words
The process of claim 1 wherein the pressure is 30 to 700 atmospheres.
Claim 8
Dependent Claim
11 words
The process of claim 1 wherein the aromatic compound is benzene.
Claim 9
Dependent Claim
11 words
The process of claim 1 wherein the aromatic compound is toluene.
Claim 10
Dependent Claim
12 words
The process of claim 1 wherein the aromatic compound is diphenyl ether.
Claim 11
Dependent Claim
11 words
The process of claim 1 wherein the aromatic compound is aniline.
Claim 12
Dependent Claim
15 words
The process of claim 1 wherein the aromatic compound is monoamino derivative of diphenyl ether.
Claim 13
Dependent Claim
24 words
The process of claim 1 wherein the aromatic compound is a mixture of an aromatic compound containing no amino groups and its monoamino derivative.
Claim 14
Dependent Claim
25 words
The process of claim 12 wherein the molar ratio of the monoamino derivative to the non-amino containing aromatic compound is from about 1:2 to 2:1.
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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |