JPS6461436A - Method for separating 2,6-diisopropylnaphthalene - Google Patents
Method for separating 2,6-diisopropylnaphthaleneInfo
- Publication number
- JPS6461436A JPS6461436A JP21555887A JP21555887A JPS6461436A JP S6461436 A JPS6461436 A JP S6461436A JP 21555887 A JP21555887 A JP 21555887A JP 21555887 A JP21555887 A JP 21555887A JP S6461436 A JPS6461436 A JP S6461436A
- Authority
- JP
- Japan
- Prior art keywords
- dipn
- boiling point
- mixture
- titled compound
- isopropylnaphthalenes
- 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.)
- Pending
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE:To advantageously obtain the titled compound from a mixture of isopropylnaphthalenes, by distilling away a fore-running so as to provide a specific amount of components having a higher boiling point than monoisopropylnaphthalene and lower boiling point than that of the titled compound, cooling and crystallizing or recrystallizing the titled compound. CONSTITUTION:A mixture of isopropylnaphthalenes containing 2,6- diisopropylnaphthalene (2,6-DIPN) is distilled and the distillation residual oil is cooled and crystallized or recrystallized to separate the 2,6-DIPN useful for producing polyethylene naphthalate fibers, etc., from the above-mentioned mixture. In the process, a fore-running is distilled away so that the amount of components having a lower boiling point than that of monoisopropylnaphthalene and higher boiling point than that of the 2,6-DIPN may be <=10%, preferably <=5% by the afore-mentioned distillation. Thereby the concentrated 2,6-DIPN fraction is recovered from the alkylation reaction product of naphthalene (the above-mentioned mixture) at a low equipment cost with hardly any quantity of utility.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21555887A JPS6461436A (en) | 1987-08-28 | 1987-08-28 | Method for separating 2,6-diisopropylnaphthalene |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21555887A JPS6461436A (en) | 1987-08-28 | 1987-08-28 | Method for separating 2,6-diisopropylnaphthalene |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6461436A true JPS6461436A (en) | 1989-03-08 |
Family
ID=16674417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21555887A Pending JPS6461436A (en) | 1987-08-28 | 1987-08-28 | Method for separating 2,6-diisopropylnaphthalene |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6461436A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0404421A1 (en) * | 1989-06-22 | 1990-12-27 | Kureha Kagaku Kogyo Kabushiki Kaisha | Method of separating and purifying beta-monoisopropyl-naphthalene |
-
1987
- 1987-08-28 JP JP21555887A patent/JPS6461436A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0404421A1 (en) * | 1989-06-22 | 1990-12-27 | Kureha Kagaku Kogyo Kabushiki Kaisha | Method of separating and purifying beta-monoisopropyl-naphthalene |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0137124A3 (en) | Removal of light impurities from caprolactam by distillation with water | |
US4513143A (en) | Preparation of ketene acetals | |
KR980001989A (en) | Dialkyl naphthalene manufacturing method | |
US4780568A (en) | Purification of methacrylic acid from an oxydehydrogenation by crystallization | |
EP0031097A1 (en) | Method for distilling ethyl alcohol | |
US2321117A (en) | Purification of naphthalene | |
JPS6461436A (en) | Method for separating 2,6-diisopropylnaphthalene | |
SG44681A1 (en) | Process for the purification of 2,6-diisopropyl phenol | |
US3870745A (en) | Complex of 2,6-dimethylnaphthalene and 2-cyano-6-methylnaphthalene | |
GB1357159A (en) | Easily graphitizable electrode pitch | |
BR9201010A (en) | PROCESS FOR ACETIC ACID RECOVERY FROM A LIQUID COMPOSITION AND PROCESS FOR ACETIC ACID PRODUCTION | |
US3364139A (en) | Method for separating isobutane from an alkylate effluent | |
ATE263745T1 (en) | METHOD FOR PRODUCING 2,6-DIMETHYLNAPHHALINE | |
US3689584A (en) | A chemical process of separating olefins from aluminum alkyls by forming complexes of the aluminum alkyls which are insoluble in the olefins | |
ES462355A1 (en) | Process for the purification of epsilon-caprolactam | |
US3222349A (en) | Method for separating hydrocarbons | |
US2382142A (en) | Process for recovering substantially pure m-cresol or p-cresol | |
GB1488639A (en) | Process for separating solutions containing propylene oxide | |
US4066682A (en) | Transesterification of borate esters for producing secondary alcohols | |
GB1208364A (en) | Purification process involving two crystallization stages for separating paraxylene from an aromatic hydrocarbon fraction | |
US4032581A (en) | Method for separation of m- or p-cresol | |
KR19990076779A (en) | Purification method of crystalline substance | |
JPS5795923A (en) | Preparation of beta-methylnaphthalene | |
JP2623344B2 (en) | Method for separation and purification of β-monoisopropylnaphthalene | |
JPS5740423A (en) | Production of cumene and/or polyisopropylbenzene |