GB857113A - Manufacture of resorcinol - Google Patents
Manufacture of resorcinolInfo
- Publication number
- GB857113A GB857113A GB25567/58A GB2556758A GB857113A GB 857113 A GB857113 A GB 857113A GB 25567/58 A GB25567/58 A GB 25567/58A GB 2556758 A GB2556758 A GB 2556758A GB 857113 A GB857113 A GB 857113A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resorcinol
- steam
- distillate
- ammonia
- aqueous 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
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
- C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
- C07C37/74—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by distillation
- C07C37/76—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by distillation by steam distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A process for the manufacture of resorcinol by the catalytic cleavage of a reaction mixture containing m-di-isopropylbenzene dihydroperoxide derived from the oxidation of m-diisopropylbenzene, comprises heat decomposing the material less volatile than resorcinol while passing steam through said material, simultaneously distilling off the additional quantities of resorcinol and the m-isopropenyl phenol so formed and recovering the resorcinol from the aqueous distillate while maintaining the pH of the latter at a value of at least 4. The pH may be maintained at a value of at least 4, preferably 4-7, by adding a 30% aqueous solution of ammonium sulphate to the cleavage reaction product so as to bring its pH to about 3. This mixture is then distilled to remove acetone and hydrocarbons and the residual aqueous solution distilled in the presence of steam. During this distillation ammonia formed by dissociation of the ammonium sulphate passes over into the distillate and maintains its pH at at least 4. Alternatively ammonium sulphate or a volatile base such as ammonia or an organic amine may be added to the aqueous solution of resorcinol prior to distillation in the presence of steam, or ammonia may be added directly to the distillate. The maintenance of pH at least 4 is said to reduce the tendency of the m-isopropenyl phenol and resorcinol to combine together to form high boiling by-products. A comparative example is given where an aqueous solution of resorcinol of pH 2,2 is steam-stripped to give an aqueous distillate of pH2,8 and where the solution is first neutralised with ammonia to pH 3,9 and then steam-stripped to given an aqueous distillate of pH 4,9 from which improved yields are recovered.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB25567/58A GB857113A (en) | 1958-08-08 | 1958-08-08 | Manufacture of resorcinol |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB25567/58A GB857113A (en) | 1958-08-08 | 1958-08-08 | Manufacture of resorcinol |
Publications (1)
Publication Number | Publication Date |
---|---|
GB857113A true GB857113A (en) | 1960-12-29 |
Family
ID=10229785
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB25567/58A Expired GB857113A (en) | 1958-08-08 | 1958-08-08 | Manufacture of resorcinol |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB857113A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4339614A (en) * | 1980-03-14 | 1982-07-13 | Pcuk Produits Chimiques Ugine Kuhlmann | Superacid catalyzed preparation of resorcinol from meta-isopropylphenol |
-
1958
- 1958-08-08 GB GB25567/58A patent/GB857113A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4339614A (en) * | 1980-03-14 | 1982-07-13 | Pcuk Produits Chimiques Ugine Kuhlmann | Superacid catalyzed preparation of resorcinol from meta-isopropylphenol |
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