JPS54128558A - Purification of naphthoquinone - Google Patents

Purification of naphthoquinone

Info

Publication number
JPS54128558A
JPS54128558A JP3582578A JP3582578A JPS54128558A JP S54128558 A JPS54128558 A JP S54128558A JP 3582578 A JP3582578 A JP 3582578A JP 3582578 A JP3582578 A JP 3582578A JP S54128558 A JPS54128558 A JP S54128558A
Authority
JP
Japan
Prior art keywords
naphthoquinone
crude
acid
pref
naphthalene
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
JP3582578A
Other languages
Japanese (ja)
Other versions
JPS5614094B2 (en
Inventor
Akira Matsuura
Kazuaki Sakai
Tsunekatsu Sato
Yorinobu Yamada
Kozo Bando
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.)
Kawasaki Kasei Chemicals Ltd
Original Assignee
Kawasaki Kasei Chemicals Ltd
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 Kawasaki Kasei Chemicals Ltd filed Critical Kawasaki Kasei Chemicals Ltd
Priority to JP3582578A priority Critical patent/JPS54128558A/en
Priority to US06/022,878 priority patent/US4257851A/en
Priority to GB7910222A priority patent/GB2017694B/en
Priority to DE2912053A priority patent/DE2912053C2/en
Publication of JPS54128558A publication Critical patent/JPS54128558A/en
Publication of JPS5614094B2 publication Critical patent/JPS5614094B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To purify a crude naphthoquinone obtained by the oxidation of naphthalene, in high yield and efficiency, without causing polycondensation of the naphthoquinone, by decreasing the acid content of the crude raw material below a specific value, and distilling under reduced pressure.
CONSTITUTION: The content of organic acid such as phthalic acid, benzoic acid, etc., in a crude naphthoquinone obtained by the oxidation of naphthalene is reduced below 5 mol%, pref. below 3 mol%, as monobasic acid, based on the naphthoquinone, and distilled in vacuum. The distillation can be carried out by a simple distillation apparatus or a rectification column, pref. at a temp. betweem the melting point of the crude naphthoquinone and 160°C under a vacuum of 1W16 Torr.
COPYRIGHT: (C)1979,JPO&Japio
JP3582578A 1978-03-27 1978-03-27 Purification of naphthoquinone Granted JPS54128558A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP3582578A JPS54128558A (en) 1978-03-27 1978-03-27 Purification of naphthoquinone
US06/022,878 US4257851A (en) 1978-03-27 1979-03-22 Purification of naphthoquinone
GB7910222A GB2017694B (en) 1978-03-27 1979-03-23 Purification of naphthoquinone
DE2912053A DE2912053C2 (en) 1978-03-27 1979-03-27 Process for the purification of naphthoquinone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3582578A JPS54128558A (en) 1978-03-27 1978-03-27 Purification of naphthoquinone

Publications (2)

Publication Number Publication Date
JPS54128558A true JPS54128558A (en) 1979-10-05
JPS5614094B2 JPS5614094B2 (en) 1981-04-02

Family

ID=12452721

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3582578A Granted JPS54128558A (en) 1978-03-27 1978-03-27 Purification of naphthoquinone

Country Status (1)

Country Link
JP (1) JPS54128558A (en)

Also Published As

Publication number Publication date
JPS5614094B2 (en) 1981-04-02

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