GB982892A - Process for the preparation of tetrachlorophthalodinitrile by catalytic vapor-phasechlorination of o-phthalodinitrile - Google Patents
Process for the preparation of tetrachlorophthalodinitrile by catalytic vapor-phasechlorination of o-phthalodinitrileInfo
- Publication number
- GB982892A GB982892A GB1485561A GB1485561A GB982892A GB 982892 A GB982892 A GB 982892A GB 1485561 A GB1485561 A GB 1485561A GB 1485561 A GB1485561 A GB 1485561A GB 982892 A GB982892 A GB 982892A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phthalodinitrile
- active carbon
- temperature
- tetrachloride
- treating
- 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
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C255/00—Carboxylic acid nitriles
- C07C255/49—Carboxylic acid nitriles having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
- C07C255/50—Carboxylic acid nitriles having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton to carbon atoms of non-condensed six-membered aromatic rings
- C07C255/51—Carboxylic acid nitriles having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton to carbon atoms of non-condensed six-membered aromatic rings containing at least two cyano groups bound to the carbon skeleton
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Tetrachlorophthalodinitriles, are produced by mixing o-phthalodinitrile in a vapour state and chlorine gas and passing the mixture continuously in a vapour state over an active carbon catalyst maintained at a temperature between 200-450 DEG C. so as to produce a catalytic chlorination of the o-phthalodinitrile. The active carbon catalyst may contain an additional substance e.g. potassium chloride, calcium chloride, barium chloride or acidic clay, in an amount from 0.1 to 50 times the weight of the active carbon. A diluent may be added to the o-phthalodinitrile and chlorine mixture, e.g. nitrogen, hydrochloric acid gas or carbon tetrachloride in a volume amount above 0.2 times the volume of the chlorine gas. The tetrachloride phthalodinitrile may be selectively separated from the reaction products by treating it with aliphatic alcohols, e.g. methyl, ethyl, isopropyl, butyl and amyl-alcohols at a temperature from room temperature to 150 DEG C. or by treating with aliphatic hydrocarbon chlorides, e.g. trichloroethylene and carbon tetrachloride or by using aromatic hydrocarbons such as benzene and xylene.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH487561A CH403739A (en) | 1961-04-26 | 1961-04-26 | Process for preparing chlorinated phthalodinitriles by catalytic vapor phase chlorination of phthalodinitrile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB982892A true GB982892A (en) | 1965-02-10 |
Family
ID=4284066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1485561A Expired GB982892A (en) | 1961-04-26 | 1961-04-25 | Process for the preparation of tetrachlorophthalodinitrile by catalytic vapor-phasechlorination of o-phthalodinitrile |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH403739A (en) |
| GB (1) | GB982892A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1277838B (en) * | 1966-09-10 | 1968-09-19 | Basf Ag | Process for the continuous production of tetrachlorophthalic dinitrile |
| CN112939812A (en) * | 2021-02-07 | 2021-06-11 | 江苏新河农用化工有限公司 | Chlorothalonil production process |
-
1961
- 1961-04-25 GB GB1485561A patent/GB982892A/en not_active Expired
- 1961-04-26 CH CH487561A patent/CH403739A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1277838B (en) * | 1966-09-10 | 1968-09-19 | Basf Ag | Process for the continuous production of tetrachlorophthalic dinitrile |
| CN112939812A (en) * | 2021-02-07 | 2021-06-11 | 江苏新河农用化工有限公司 | Chlorothalonil production process |
Also Published As
| Publication number | Publication date |
|---|---|
| CH403739A (en) | 1965-12-15 |
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