GB710880A - Desulphonation of sulphonated compounds - Google Patents
Desulphonation of sulphonated compoundsInfo
- Publication number
- GB710880A GB710880A GB18491/51A GB1849151A GB710880A GB 710880 A GB710880 A GB 710880A GB 18491/51 A GB18491/51 A GB 18491/51A GB 1849151 A GB1849151 A GB 1849151A GB 710880 A GB710880 A GB 710880A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphonated
- temperature
- sulphuric acid
- steam
- mixture
- 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
- C07C17/00—Preparation of halogenated hydrocarbons
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Sulphonated compounds mixed or dissolved with water and/or sulphuric acid, obtained as by-products in the manufacture of substituted diphenyl-trichloroethanes, are desulphonated by injecting steam into the mixture without external heating and separating the desulphonated compound from the condensate, the temperature being maintained constant at a temperature just below the boiling point of the ternary mixture-sulphonic acid, water, sulphuric acid-by controlling the supply of steam. An example is given in which steam is introduced into a mixture of sulphonated mono-chlorobenzene, sulphuric acid and water resulting from the manufacture of D.D.T., the supply being controlled to keep the temperature at about 190 DEG C. Monochlorobenzene passes into the vapour phase and is condensed. The process is applicable also to the desulphonation of sulphonated anisole and sulphonated xylene, obtained as by-products in the preparation of dimethoxydiphenyl-trichloroethane and di-xylenyl-trichloroethane, respectively.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR710880X | 1950-08-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB710880A true GB710880A (en) | 1954-06-23 |
Family
ID=9073471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18491/51A Expired GB710880A (en) | 1950-08-18 | 1951-08-03 | Desulphonation of sulphonated compounds |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB710880A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015500312A (en) * | 2011-12-15 | 2015-01-05 | ソルベイ スペシャルティ ポリマーズ ユーエスエー， エルエルシー | Process for producing haloaryl compounds from a mixture of isomers of dihalodiaryl sulfones |
-
1951
- 1951-08-03 GB GB18491/51A patent/GB710880A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015500312A (en) * | 2011-12-15 | 2015-01-05 | ソルベイ スペシャルティ ポリマーズ ユーエスエー， エルエルシー | Process for producing haloaryl compounds from a mixture of isomers of dihalodiaryl sulfones |
| JP2018024675A (en) * | 2011-12-15 | 2018-02-15 | ソルベイ スペシャルティ ポリマーズ ユーエスエー， エルエルシー | Process for manufacturing haloaryl compounds from mixtures of isomers of dihalodiarylsulfone |
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