ES295254A1 - New process for the manufacture of organic disulphides - Google Patents
New process for the manufacture of organic disulphidesInfo
- Publication number
- ES295254A1 ES295254A1 ES0295254A ES295254A ES295254A1 ES 295254 A1 ES295254 A1 ES 295254A1 ES 0295254 A ES0295254 A ES 0295254A ES 295254 A ES295254 A ES 295254A ES 295254 A1 ES295254 A1 ES 295254A1
- Authority
- ES
- Spain
- Prior art keywords
- amine
- mercaptan
- sulphur
- disulphides
- solution
- 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
- C07C319/00—Preparation of thiols, sulfides, hydropolysulfides or polysulfides
- C07C319/22—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of hydropolysulfides or polysulfides
- C07C319/24—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of hydropolysulfides or polysulfides by reactions involving the formation of sulfur-to-sulfur bonds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Organic disulphides, particularly dialkyl and diaryl disulphides, are obtained by reacting sulphur with one or more mercaptans in the presence of an aqueous solution of an amine in a quantity sufficient to absorb the hydrogen sulphide which is formed during the reaction. The reaction mixture preferably contains about 2 mols. of mercaptan and about 0.75 atoms of sulphur, while the preferred quantity of amine is at least one equivalent per 2 mols. of mercaptan. The solution of amine hydrosulphide formed is subsequently dissociated in order to regenerate the hydrogen sulphide and the amine, the latter being used again in the sulphidation of the mercaptan. The regenerated H2S is subjected to oxidation in known manner to regenerate sulphur. The preferred amines are those having a boiling point above 100 DEG C., especially the alkanolamines. The treatment of the mercaptan with sulphur is preferably carried out at a temperature between 0 DEG and 50 DEG C. and may be effected at a pressure higher than atmospheric pressure, e.g. at 1 to 15 atm. The amine is generally used in aqueous solution with a concentration between 10 and 80%, preferably about 50%. The process can be carried out continuously or intermittently and the sulphur may be introduced into the reaction mixture as a fine powder in the form of a suspension in the amine solution. The reaction yields an aqueous phase and an organic phase, this latter comprising the disulphide product. The aqueous phase, formed by the amine solution containing the combined H2S and a small quantity of dissolved mercaptan is distilled with a view to its dissociation into H2S and amine intended for recycling and for recovery of the mercaptan. Specified disulphides are: dimethyl, diethyl, dipropyl, diisopropyl, di-n-butyl, diisobutyl, dihexyl, dioctyl, dinonyl, didecyl, didodecyl, diphenyl, ditolyl, diethylphenyl, discylyl, ditolylnenzyl, diethylbenzyl and dinaphthyl disulphides.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR921352A FR1359677A (en) | 1963-01-14 | 1963-01-14 | New process for the production of organic disulfides |
Publications (1)
Publication Number | Publication Date |
---|---|
ES295254A1 true ES295254A1 (en) | 1963-11-01 |
Family
ID=8794653
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES0295254A Expired ES295254A1 (en) | 1963-01-14 | 1964-01-13 | New process for the manufacture of organic disulphides |
Country Status (7)
Country | Link |
---|---|
CH (1) | CH412869A (en) |
DE (1) | DE1230788B (en) |
ES (1) | ES295254A1 (en) |
FR (1) | FR1359677A (en) |
GB (1) | GB1005460A (en) |
NL (1) | NL6400187A (en) |
OA (1) | OA01219A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2712824B1 (en) * | 1993-11-26 | 1996-02-02 | Inst Francais Du Petrole | Catalyst regeneration process. |
FR2727426A1 (en) * | 1994-11-28 | 1996-05-31 | Inst Francais Du Petrole | ETHYLENIC HYDROCARBONS SULPHIDES BY ELEMENTARY SULFUR IN THE PRESENCE OF ALKANOLAMINES, THEIR PREPARATION AND THEIR USE |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2237625A (en) * | 1938-10-07 | 1941-04-08 | Sharples Solvents Corp | Sulphurization of sulphur-containing organic conpounds |
-
1963
- 1963-01-14 FR FR921352A patent/FR1359677A/en not_active Expired
-
1964
- 1964-01-13 GB GB1474/64A patent/GB1005460A/en not_active Expired
- 1964-01-13 CH CH28264A patent/CH412869A/en unknown
- 1964-01-13 ES ES0295254A patent/ES295254A1/en not_active Expired
- 1964-01-13 DE DES89034A patent/DE1230788B/en active Pending
- 1964-01-13 NL NL6400187A patent/NL6400187A/xx unknown
- 1964-12-31 OA OA51402A patent/OA01219A/en unknown
Also Published As
Publication number | Publication date |
---|---|
NL6400187A (en) | 1964-07-15 |
CH412869A (en) | 1966-05-15 |
DE1230788B (en) | 1966-12-22 |
FR1359677A (en) | 1964-04-30 |
OA01219A (en) | 1969-01-25 |
GB1005460A (en) | 1965-09-22 |
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