JPS5653630A - Separating method of resorcin and hydroquinone - Google Patents
Separating method of resorcin and hydroquinoneInfo
- Publication number
- JPS5653630A JPS5653630A JP13036579A JP13036579A JPS5653630A JP S5653630 A JPS5653630 A JP S5653630A JP 13036579 A JP13036579 A JP 13036579A JP 13036579 A JP13036579 A JP 13036579A JP S5653630 A JPS5653630 A JP S5653630A
- Authority
- JP
- Japan
- Prior art keywords
- hydroquinone
- resorcin
- rectifier
- organic solvent
- separate
- 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.)
- Granted
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To separate resorcin and hydroquinone extremely effectively and in high purity, by the continuous rectification and recrystallization of a mixture containing the resorcin and hydroquinone.
CONSTITUTION: A mixture containing resorcin and hydroquinone is rectified continuously to give the weight ratio between resorcin and hydroquinone in the rectifier of 0.1:1W1:1, and the resorcin is separated as a distillate. The bottoms in the rectifier are directly recrystallized from water and/or an organic solvent, or redistilled preferably in the presence of steam. The resultant distillate is then recrystallized from water and/or an organic solvent, to separate the hydroquinone. The latter method is particularly effective for preventing the hydroquinone from coloring.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13036579A JPS5653630A (en) | 1979-10-09 | 1979-10-09 | Separating method of resorcin and hydroquinone |
US06/193,588 US4308110A (en) | 1979-10-09 | 1980-10-03 | Process for separation and purification of dihydric phenols |
DE19803037476 DE3037476A1 (en) | 1979-10-09 | 1980-10-03 | METHOD FOR SEPARATING RESORCIN AND HYDROQUINONE FROM OR FOR THE SEPARATION AND PURIFICATION OF HYDROQUINONE FROM POLLUTED RAW HYDROCHINONE |
CA361,613A CA1130818A (en) | 1979-10-09 | 1980-10-06 | Process for separation and purification of dihydric phenols |
GB8032273A GB2061926B (en) | 1979-10-09 | 1980-10-07 | Process for separation and purification of dihydic phenols |
FR8021516A FR2467185A1 (en) | 1979-10-09 | 1980-10-08 | PROCESSES FOR SEPARATION AND PURIFICATION OF RESORCINOL AND HYDROQUINONE |
IT49849/80A IT1143996B (en) | 1979-10-09 | 1980-10-08 | PROCEDURE FOR THE SEPARATION AND PURIFICATION OF BIVALENT PHENOLS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13036579A JPS5653630A (en) | 1979-10-09 | 1979-10-09 | Separating method of resorcin and hydroquinone |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5653630A true JPS5653630A (en) | 1981-05-13 |
JPS6249253B2 JPS6249253B2 (en) | 1987-10-19 |
Family
ID=15032625
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13036579A Granted JPS5653630A (en) | 1979-10-09 | 1979-10-09 | Separating method of resorcin and hydroquinone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5653630A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003512295A (en) * | 1999-01-25 | 2003-04-02 | ロディア・シミ | Method and apparatus for separation and purification of diphenols in the phenol and phenol derivative industries |
KR20050019667A (en) * | 2003-08-20 | 2005-03-03 | 애경화학 주식회사 | Separation of hydroxy-substituted aromatic compounds |
JP2009541468A (en) * | 2006-06-29 | 2009-11-26 | ロデイア・オペラシヨン | Process for the preparation of purified hydroquinone |
JP2011506553A (en) * | 2007-12-19 | 2011-03-03 | ロデイア・オペラシヨン | Method for preparing purified pyrocatechol |
-
1979
- 1979-10-09 JP JP13036579A patent/JPS5653630A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003512295A (en) * | 1999-01-25 | 2003-04-02 | ロディア・シミ | Method and apparatus for separation and purification of diphenols in the phenol and phenol derivative industries |
KR20050019667A (en) * | 2003-08-20 | 2005-03-03 | 애경화학 주식회사 | Separation of hydroxy-substituted aromatic compounds |
JP2009541468A (en) * | 2006-06-29 | 2009-11-26 | ロデイア・オペラシヨン | Process for the preparation of purified hydroquinone |
JP2011506553A (en) * | 2007-12-19 | 2011-03-03 | ロデイア・オペラシヨン | Method for preparing purified pyrocatechol |
Also Published As
Publication number | Publication date |
---|---|
JPS6249253B2 (en) | 1987-10-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS549269A (en) | Carboxylic acid esters, process for their preparation and insecticides and miticides containing the same as active constituents | |
JPS5791994A (en) | 5'-o-(n-alkylcarbamoylalanyl)-5-fluorouridine and its preparation | |
JPS5653630A (en) | Separating method of resorcin and hydroquinone | |
JPS5618939A (en) | Effective component in corbicula as a drug and its preparation | |
JPS5626847A (en) | Preparation of substituted salicylic acid derivative | |
JPS53112837A (en) | Method of isolation of alpha-phenylpropionic acid compound | |
JPS55108898A (en) | 25-hydroxy-24-oxocholesterol derivative and its preparation | |
JPS5536456A (en) | 1,2-benzodiazepine derivative and its preparation | |
JPS537657A (en) | Concentration and separation of naphthalene-1,3,6,-trisulfonic acid | |
JPS5495533A (en) | Preparation of derivative of anthranylaldehyde | |
JPS5513230A (en) | Isomerization of unsaturated alcohol | |
JPS51119994A (en) | Floor duct work for cable using light weight steel and the like | |
JPS55129249A (en) | Preparation of 1-amino-2-bromo-4-hydroxyanthraquinone | |
JPS5424813A (en) | Separation of methacrylic acid | |
JPS545936A (en) | Phenylacetic acid ester derivatives, process for their preparation and their insecticides or miticides containing the same as active constituents | |
JPS52153919A (en) | Preparation of resorcin | |
JPS5721371A (en) | Quinolinoneiminecarboxylic ester derivative, its preparation and anti-inflammatory and analgesic agent composition containing the same | |
JPS5538316A (en) | Intermediate for synthesis of steroid and its preparation | |
JPS55111424A (en) | Preparation of tricyclo 6.2.1.02,6 undec-2(6)-ene | |
JPS52102252A (en) | Preparation of cyclopropanecarbxylic acid ester | |
JPS52102274A (en) | 8-azaprostanic acid derivatives | |
JPS5412355A (en) | Alkyl cyclohexyldichlorosilane compounds and their preparation | |
JPS55127349A (en) | Simultaneous removal of water and picolines | |
JPS52122345A (en) | Preparation of cyclopropane carboxylic acid derivatives and compounds derived therefrom | |
JPS5735560A (en) | Isolation of 4,4'-dihydroxydiphenylsulfone from mixture of dihyoroxydiphenylsulfone isomer |