GB880895A - Process for the hydrolysis of condensation products of phenols with aldehydes or ketones - Google Patents
Process for the hydrolysis of condensation products of phenols with aldehydes or ketonesInfo
- Publication number
- GB880895A GB880895A GB41787/59A GB4178759A GB880895A GB 880895 A GB880895 A GB 880895A GB 41787/59 A GB41787/59 A GB 41787/59A GB 4178759 A GB4178759 A GB 4178759A GB 880895 A GB880895 A GB 880895A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phenol
- dihydroxy
- solution
- atm
- diphenyl
- 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
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
- C07C45/85—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to a chemical modification
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
An alkali-soluble condensation product of a phenol and a ketone or an aldehyde, particularly a 4,41-dihydroxy-polyphenyl-alkane, is hydrolysed into the compounds from which it is formed by heating the condensation product in the presence of basic materials and water at 150 DEG C. to 350 DEG C. under a pressure of 5 to 150 atmospheres. Suitable basic materials are the alkali metal and alkaline-earth metal hydroxides and carbonates, ammonia and basic ammonium salts. In Example 1 a homogenous solution of 2,2-(4,41-dihydroxydiphenyl)-propane (100 g.), sodium hydroxide (35 g.) and water (440 g.) is heated for 3 hours, with stirring, at 240 DEG C. in an autoclave. The initial pressure is 20 atm. and rises to 70 atm. The solution is then distilled in a column, and acetone is distilled off. The residue is acidified with phosphoric acid, and the phenol is driven-over with steam. In Example 4, an aqueous alkaline solution of 2,21-(4,41dihydroxydiphenyl)-pentane is heated for 4 hours at 240 DEG C. under pressure to give methylpropylketone and phenol. In Example 5, cyclohexanone and phenol are obtained from 1,1-(4,41-dihydroxy-diphenyl)-cyclohexane. In this case, the ketone is separated from the alkaline solution by extracting with benzene. In Example 6, acetophenone and phenol are obtained from 4,41-dihydroxy-triphenyl ethane. In Example 7, 2,4-dimethyl-phenol is obtained from 3, 31, 5, 51 - tetramethyl - 2, 21 - dihydroxy - diphenyl - methane. Specification 829,207 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE880895X | 1958-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB880895A true GB880895A (en) | 1961-10-25 |
Family
ID=6825916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB41787/59A Expired GB880895A (en) | 1958-12-31 | 1959-12-08 | Process for the hydrolysis of condensation products of phenols with aldehydes or ketones |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB880895A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4245128A (en) * | 1978-08-14 | 1981-01-13 | Mitsui Toatsu Chemicals, Inc. | Process for cleaving dihydroxydiphenyl alkanes |
| US4277628A (en) * | 1980-05-20 | 1981-07-07 | General Electric Company | Phenol recovery from bisphenol-A waste streams |
| US4594459A (en) * | 1985-03-25 | 1986-06-10 | The Dow Chemical Company | Preparation of p-isopropenyl phenol and related compounds |
| US5136111A (en) * | 1991-06-07 | 1992-08-04 | Mri Ventures, Inc. | Controlled catalytic and thermal sequential pyrolysis and hydrolysis of phenolic resin containing waste streams to sequentially recover monomers and chemicals |
-
1959
- 1959-12-08 GB GB41787/59A patent/GB880895A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4245128A (en) * | 1978-08-14 | 1981-01-13 | Mitsui Toatsu Chemicals, Inc. | Process for cleaving dihydroxydiphenyl alkanes |
| US4277628A (en) * | 1980-05-20 | 1981-07-07 | General Electric Company | Phenol recovery from bisphenol-A waste streams |
| US4594459A (en) * | 1985-03-25 | 1986-06-10 | The Dow Chemical Company | Preparation of p-isopropenyl phenol and related compounds |
| US5136111A (en) * | 1991-06-07 | 1992-08-04 | Mri Ventures, Inc. | Controlled catalytic and thermal sequential pyrolysis and hydrolysis of phenolic resin containing waste streams to sequentially recover monomers and chemicals |
| WO1992021639A1 (en) * | 1991-06-07 | 1992-12-10 | Chum Helena L | Controlled catalytic and thermal sequential pyrolysis and hydrolysis of phenolic resin containing waste streams to sequentially recover monomers and chemicals |
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