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JPS5683423A - Recovery of solvent - Google Patents

Recovery of solvent

Info

Publication number
JPS5683423A
JPS5683423A JP15924979A JP15924979A JPS5683423A JP S5683423 A JPS5683423 A JP S5683423A JP 15924979 A JP15924979 A JP 15924979A JP 15924979 A JP15924979 A JP 15924979A JP S5683423 A JPS5683423 A JP S5683423A
Authority
JP
Japan
Prior art keywords
solvent
introducing
water
aliphatic hydrocarbon
halogenated aliphatic
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
Application number
JP15924979A
Other languages
Japanese (ja)
Other versions
JPS6228945B2 (en
Inventor
Kimitoshi Kato
Koichi Yoshiura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP15924979A priority Critical patent/JPS5683423A/en
Publication of JPS5683423A publication Critical patent/JPS5683423A/en
Publication of JPS6228945B2 publication Critical patent/JPS6228945B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: To recover a halogenated aliphatic hydrocarbon solvent, easily, in high recovery, and sufficiently high purity for recycling, preventing frothing of the solvent, from a reaction liquid obtained by the nitration of an anthraquinone compound in the presence of said solvent, by introducing the liquid into a water layer of a specific temperature, thereby immediately distilling out the solvent as the azeotropic mixture.
CONSTITUTION: An anthraquinone compound is nitrated in the presence of a halogenated aliphatic hydrocarbon solvent (e.g. methylene chloride, 1,2-dichloroethane, etc.), and the solvent is recovered from the reaction products by introducing the reaction liquid into a water layer (pure water or dilute sulfuric acid) maintained at a temperature above the azeotropic point of the solvent and water, and cooling the distilled azeotropic mixture. The process has no adverse effect to the qualities and yield of the produced nitroanthraquinone compound.
COPYRIGHT: (C)1981,JPO&Japio
JP15924979A 1979-12-10 1979-12-10 Recovery of solvent Granted JPS5683423A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15924979A JPS5683423A (en) 1979-12-10 1979-12-10 Recovery of solvent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15924979A JPS5683423A (en) 1979-12-10 1979-12-10 Recovery of solvent

Publications (2)

Publication Number Publication Date
JPS5683423A true JPS5683423A (en) 1981-07-08
JPS6228945B2 JPS6228945B2 (en) 1987-06-23

Family

ID=15689608

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15924979A Granted JPS5683423A (en) 1979-12-10 1979-12-10 Recovery of solvent

Country Status (1)

Country Link
JP (1) JPS5683423A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8226160B2 (en) 2007-04-13 2012-07-24 Toyota Boshoku Kabushiki Kaisha Vehicular roof structure

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4955654A (en) * 1972-07-06 1974-05-30

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4955654A (en) * 1972-07-06 1974-05-30

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8226160B2 (en) 2007-04-13 2012-07-24 Toyota Boshoku Kabushiki Kaisha Vehicular roof structure

Also Published As

Publication number Publication date
JPS6228945B2 (en) 1987-06-23

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