JPS5569522A - Refining of methylnaphthalene - Google Patents
Refining of methylnaphthaleneInfo
- Publication number
- JPS5569522A JPS5569522A JP14277678A JP14277678A JPS5569522A JP S5569522 A JPS5569522 A JP S5569522A JP 14277678 A JP14277678 A JP 14277678A JP 14277678 A JP14277678 A JP 14277678A JP S5569522 A JPS5569522 A JP S5569522A
- Authority
- JP
- Japan
- Prior art keywords
- impurities
- methylnaphthalene
- coal tar
- crude
- colored components
- 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 obtain the title compound as dye-carriers, solvents, and a raw material for organic synthesis, by heat-treating a crude methylnaphthalene cut from fractional distillation of coal tar with a caustic alkali, and removing the impurities, e.g. colored components, etc., with distillation.
CONSTITUTION: A crude blue or royal purple methylnaphthalene cut (M), fractionated from coal tar, containing impurities, e.g. biphenyl, acenaphthene, and indole, is heated at 200°C or higher, preferably 230°C or higher, with a caustic alkali e.g. caustic potash or soda, in an amount of 1W10wt% based on (M), and then distilled to remove the impurities, e.g. colored components.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14277678A JPS5569522A (en) | 1978-11-21 | 1978-11-21 | Refining of methylnaphthalene |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14277678A JPS5569522A (en) | 1978-11-21 | 1978-11-21 | Refining of methylnaphthalene |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5569522A true JPS5569522A (en) | 1980-05-26 |
JPS5711889B2 JPS5711889B2 (en) | 1982-03-08 |
Family
ID=15323318
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14277678A Granted JPS5569522A (en) | 1978-11-21 | 1978-11-21 | Refining of methylnaphthalene |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5569522A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108586184A (en) * | 2018-04-17 | 2018-09-28 | 鹏辰新材料科技股份有限公司 | A kind of separation and process for purification based on overcritical and ultrasonic wave beta-methylnaphthalene |
-
1978
- 1978-11-21 JP JP14277678A patent/JPS5569522A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108586184A (en) * | 2018-04-17 | 2018-09-28 | 鹏辰新材料科技股份有限公司 | A kind of separation and process for purification based on overcritical and ultrasonic wave beta-methylnaphthalene |
Also Published As
Publication number | Publication date |
---|---|
JPS5711889B2 (en) | 1982-03-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3169101A (en) | Purification of impure phenols by distillation with an organic solvent | |
JPS5569522A (en) | Refining of methylnaphthalene | |
JPS53116348A (en) | Stereospecific cyclization of d-citronellal to 1-isopulegol | |
ES409297A1 (en) | Distillation of chlorinated hydrocarbons with alkali metal material addition | |
ES479445A1 (en) | Process for producing high purity benzene | |
US4429170A (en) | Process for removing tar bases from Lurgi tar acid stream | |
GB747411A (en) | Improvements relating to the separation of gases | |
JPS5511513A (en) | Purification of resorcinol | |
ES462355A1 (en) | Process for the purification of epsilon-caprolactam | |
JPS5575485A (en) | Coke production and coke composition | |
JPS56135428A (en) | Purification of 1,2-dichlroethane | |
JPS5649791A (en) | Purification of coal heavy oil | |
GB2084178B (en) | Process for coking high boiling aromatic hydrocarbon mixtures to form carbon materials with substantially constant properties | |
EP0187479A3 (en) | Extraction of aromatics with ethyl acetoacetate | |
JPS5557524A (en) | Preparation of polycyclic aromatic hydrocarbon compound | |
JPS55167230A (en) | Separation and purification of terphenyl | |
ATE189802T1 (en) | DISTILLATION PROCESS TO IMPROVE THE EXTRACTION OF PURE PRODUCTS FROM RAW ANTHRACENES | |
JPS55104387A (en) | Production of heavy oil as raw material for high-quality carbonaceous material | |
JPS57114574A (en) | Preparation of 2-methylquinoline | |
JPS525733A (en) | Process for separation and purification of cyclohexene | |
JPS52144649A (en) | Separation and purification of cyclohexene | |
JPS5721329A (en) | Recovery of naphthalene from petroleum cracking product | |
JPS56161334A (en) | Purifying method of methylnaphthalene | |
JPS5212135A (en) | Process for separation of 1,3,5-trialkylbenzene | |
JPS53137909A (en) | Purification of fatty acid |