US4124631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of aromatic nitriles
Assignee: Nippon Kayaku Co Ltd
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Filing: 1977-03-10
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Granted: 1978-11-07
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Expires: 1997-03-10
Abstract
Abstract A process for the production of aromatic nitrile having the formula (I) ##STR1## wherein X represents a chlorine, bromine, iodine or fluorine atom and n is 1 or 2, By contacting aromatic compound having the formula (II) ##STR2## wherein X and n are as defined above, with ammonia and molecular oxygen in the vapor phase in the presence of a catalyst having the following composition: V.sub.a P.sub.b A.sub.c O.sub.d wherein A denotes at least one element selected from the group consisting of chromium, manganese, iron, cobalt, nickel and tin, the subscripts a, b, c, and d respectively denote the numbers of vanadium, phosphorus, A and oxygen atoms, and wherein a is 1, b is 0.1 to 3, c is 0 to 2 and d is a number determined by the valences of other elements.
Inventors
- 👤 Hiroshi Hayami
- 👤 Hitoshi Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:09
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/186; B01J27/195; B01J27/198
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
134 words
A process for the production of aromatic nitrile having the formula (I) ##STR5## wherein X represents a chlorine, bromine, iodine or fluorine atom and n is 1 or 2. by contacting aromatic compound having the formula (II) ##STR6## wherein X and n are as defined above, with ammonia and molecular oxygen in the vapor phase in the presence of a catalyst having the following composition: V.sub.a P.sub.b A.sub.c O.sub.d wherein A denotes at least one element selected from the group consisting of chromium, manganese, iron, cobalt, nickel and tin, the subscripts a, b, c and d respectively denote the numbers of vanadium, phosphorus, A and oxygen atoms, and wherein a is 1, b is 0.1 to 3, c is 0 to 2 and d is a number determined by the valances of other elements.
Claim 2
Dependent Claim
134 words
A process for the production of aromatic nitrile having the formula (I) ##STR5## wherein X represents a chlorine, bromine, iodine or fluorine atom and n is 1 or 2. by contacting aromatic compound having the formula (II) ##STR6## wherein X and n are as defined above, with ammonia and molecular oxygen in the vapor phase in the presence of a catalyst having the following composition: V.sub.a P.sub.b A.sub.c O.sub.d wherein A denotes at least one element selected from the group consisting of chromium, manganese, iron, cobalt, nickel and tin, the subscripts a, b, c and d respectively denote the numbers of vanadium, phosphorus, A and oxygen atoms, and wherein a is 1, b is 0.1 to 3, c is 0 to 2 and d is a number determined by the valances of other elements.
Claim 3
Dependent Claim
32 words
The process according to claim 1, wherein a is 1, b is 0.3 to 2.5, c is 0.05 to 1.5 and d is a number determined by the valances of other elements.
Claim 4
Dependent Claim
10 words
The process according to claim 2, wherein A is cobalt.
Claim 5
Dependent Claim
10 words
The process according to claim 2, wherein A is chromium.
Claim 6
Dependent Claim
10 words
The process according to claim 2, wherein A is manganese.
Claim 7
Dependent Claim
15 words
The process according to claim 1, wherein aromatic compound having the formula (II) is o-chlorotoluene.
Claim 8
Dependent Claim
15 words
The process according to claim 1, wherein aromatic compound having the formula (II) is 2,6-dichlorotoluene.
Claim 9
Dependent Claim
20 words
The process according to claim 1, wherein a compound of phosphorus is supplied to the reaction system continuously or intermittently.
Claim 10
Dependent Claim
14 words
The process according to claim 8, wherein said compound of phosphorus is trialkyl phosphate.
Claim 11
Dependent Claim
19 words
The process according to claim 9, wherein trialkyl phosphate is trimethyl phosphate, triethyl phosphate, tripropyl phosphate or tributyl phosphate.
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) | 1981-11-06 | 1982-05-08 | 1982-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-06 | 1986-05-08 | 1986-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-06 | 1990-05-08 | 1990-11-07 | $7700.00 | Window Closed / Lapsed |