GB775813A - Recovery of phenols - Google Patents
Recovery of phenolsInfo
- Publication number
- GB775813A GB775813A GB380855A GB380855A GB775813A GB 775813 A GB775813 A GB 775813A GB 380855 A GB380855 A GB 380855A GB 380855 A GB380855 A GB 380855A GB 775813 A GB775813 A GB 775813A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resorcinol
- reaction product
- removal
- meta
- steam
- 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
- C07C37/72—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by liquid-liquid treatment
-
- 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
- C07C37/08—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by decomposition of hydroperoxides, e.g. cumene hydroperoxide
-
- 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
- C07C37/50—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions decreasing the number of carbon atoms
- C07C37/52—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions decreasing the number of carbon atoms by splitting polyaromatic compounds, e.g. polyphenolalkanes
-
- 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
-
- 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)
- Chemical Kinetics & Catalysis (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 meta-di-isopropylbenzene dihydro-per oxide derived from the oxidation of meta-di-isopropylbenzene is characterized by the step of decomposing by the action of heat the material contained in the cleavage reaction product which is less volatile than resorcinol while passing an inert gas through the reaction product and simultaneously distilling off the additional quantities of resorcinol and the meta-isopropenylphenol so formed. The decomposition is preferably effected at a temperature within the range 170 DEG to 300 DEG C. and more preferably between 200 DEG and 270 DEG C. The initial cleavage product is preferably first treated to remove or neutralize the catalyst (e.g. sulphuric acid) and stripped of low boiling materials such as acetone and unchanged hydrocarbons. The heat treatment may be applied after removal or partial removal, before removal or concurrently with the removal of the main batch of resorcinol from the cleavage reaction product. Specified inert gases are steam, nitrogen, carbon dioxide and flue gas, the steam being preferably superheated and, if desired, generated in situ by heating an aqueous solution of the cleavage reaction product. The steam is preferably employed in such a volume that the resulting vapour phase when condensed forms a 20 to 40 per cent aqueous solution of resorcinol. Alternatively, the vapours resulting from the passage through the inert reaction product are condensed into water until a 20 to 40 per cent aqueous solution of resorcinol is obtained. Where an inert gas which cannot be condensed is employed such gas, after removal of condensable vapour, is preferably recycled to the reactor in which decomposition takes place. The resorcinol and meta-isopropenyl phenol are preferably separated from one another by selective solvation, e.g. using benzene, toluene, a - or b -methylnaphthalene or mixtures thereof, or chloroform or carbon tetrachloride. The vapours containing the resorcinol and metaisopropenyl phenol may be passed directly into the selective solvent, and when steam is employed as the inert gas two layers are formed, an aqueous layer containing resorcinol and an organic solvent layer containing the metaisopropenyl phenol.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB380855A GB775813A (en) | 1955-02-09 | 1955-02-09 | Recovery of phenols |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB380855A GB775813A (en) | 1955-02-09 | 1955-02-09 | Recovery of phenols |
Publications (1)
Publication Number | Publication Date |
---|---|
GB775813A true GB775813A (en) | 1957-05-29 |
Family
ID=9765284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB380855A Expired GB775813A (en) | 1955-02-09 | 1955-02-09 | Recovery of phenols |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB775813A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3043882A (en) * | 1958-08-08 | 1962-07-10 | Hercules Powder Co Ltd | Manufacture of resorcinol |
US3043883A (en) * | 1958-08-08 | 1962-07-10 | Hercules Powder Co Ltd | Manufacture of resorcinol |
US4192958A (en) * | 1977-09-30 | 1980-03-11 | Mitsui Petrochemical Industries Ltd. | Method for recovering resorcinol |
US4239921A (en) * | 1978-07-10 | 1980-12-16 | Mitsu, Petrochemical Industries, Ltd. | Process for purification of crude resorcinol |
US4283567A (en) * | 1978-12-20 | 1981-08-11 | Mitsui Petrochemical Industries Ltd. | Method for recovering resorcinol |
US4355190A (en) * | 1978-01-12 | 1982-10-19 | Mitsui Petrochemical Industries, Ltd. | Process for recovery of resorcinol from aqueous resorcinol solution containing hydroquinone |
-
1955
- 1955-02-09 GB GB380855A patent/GB775813A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3043882A (en) * | 1958-08-08 | 1962-07-10 | Hercules Powder Co Ltd | Manufacture of resorcinol |
US3043883A (en) * | 1958-08-08 | 1962-07-10 | Hercules Powder Co Ltd | Manufacture of resorcinol |
US4192958A (en) * | 1977-09-30 | 1980-03-11 | Mitsui Petrochemical Industries Ltd. | Method for recovering resorcinol |
US4355190A (en) * | 1978-01-12 | 1982-10-19 | Mitsui Petrochemical Industries, Ltd. | Process for recovery of resorcinol from aqueous resorcinol solution containing hydroquinone |
US4239921A (en) * | 1978-07-10 | 1980-12-16 | Mitsu, Petrochemical Industries, Ltd. | Process for purification of crude resorcinol |
US4283567A (en) * | 1978-12-20 | 1981-08-11 | Mitsui Petrochemical Industries Ltd. | Method for recovering resorcinol |
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