GB1123515A - Process for the manufacture of maleic acid imide - Google Patents
Process for the manufacture of maleic acid imideInfo
- Publication number
- GB1123515A GB1123515A GB1376467A GB1376467A GB1123515A GB 1123515 A GB1123515 A GB 1123515A GB 1376467 A GB1376467 A GB 1376467A GB 1376467 A GB1376467 A GB 1376467A GB 1123515 A GB1123515 A GB 1123515A
- Authority
- GB
- United Kingdom
- Prior art keywords
- maleic anhydride
- catalyst
- ammonia
- suitably
- acid imide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D207/44—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having three double bonds between ring members or between ring members and non-ring members
- C07D207/444—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having three double bonds between ring members or between ring members and non-ring members having two doubly-bound oxygen atoms directly attached in positions 2 and 5
- C07D207/448—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having three double bonds between ring members or between ring members and non-ring members having two doubly-bound oxygen atoms directly attached in positions 2 and 5 with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms, e.g. maleimide
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D207/44—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having three double bonds between ring members or between ring members and non-ring members
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyrrole Compounds (AREA)
- Catalysts (AREA)
Abstract
Maleic acid imide is prepared by reacting maleic anhydride and ammonia in the gaseous phase while passing them over a dehydration catalyst. The molar ratio of ammonia to maleic anhydride is suitably 1:1.3 to 1:20 and the reaction may be carried out in the presence of a gaseous diluent such as nitrogen, air or a suitable hydrocarbon. The gaseous products of a maleic anhydride synthesis may be used instead of pure maleic anhydride. The reaction temperature is suitably 100-400 DEG C. with a contact time preferably of 0.01-2 seconds. The catalyst may comprise an oxide of Groups III to VII of the Periodic Table, e.g. aluminium oxide, or a phosphoric or polyphosphoric acid or sulphuric acid or a salt of these acids or a silicate or a mixture of these. The catalyst may be supported on a carrier such as carbon or silicon carbide.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF48773A DE1299637B (en) | 1966-03-25 | 1966-03-25 | Process for the continuous production of maleic acid imide |
| DEF51057A DE1302055B (en) | 1966-03-25 | 1966-12-23 | Process for the preparation of maleic acid imide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1123515A true GB1123515A (en) | 1968-08-14 |
Family
ID=25977112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1376467A Expired GB1123515A (en) | 1966-03-25 | 1967-03-23 | Process for the manufacture of maleic acid imide |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT269829B (en) |
| BE (1) | BE696140A (en) |
| CH (1) | CH482669A (en) |
| DE (2) | DE1299637B (en) |
| GB (1) | GB1123515A (en) |
| NL (1) | NL6703901A (en) |
-
1966
- 1966-03-25 DE DEF48773A patent/DE1299637B/en active Pending
- 1966-12-23 DE DEF51057A patent/DE1302055B/en active Pending
-
1967
- 1967-03-15 NL NL6703901A patent/NL6703901A/xx unknown
- 1967-03-22 CH CH416267A patent/CH482669A/en not_active IP Right Cessation
- 1967-03-23 GB GB1376467A patent/GB1123515A/en not_active Expired
- 1967-03-23 AT AT280967A patent/AT269829B/en active
- 1967-03-28 BE BE696140D patent/BE696140A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AT269829B (en) | 1969-04-10 |
| NL6703901A (en) | 1967-09-26 |
| CH482669A (en) | 1969-12-15 |
| BE696140A (en) | 1967-09-28 |
| DE1302055B (en) | 1969-11-13 |
| DE1299637B (en) | 1969-07-24 |
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