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JPS5798220A - Production of fluorene - Google Patents

Production of fluorene

Info

Publication number
JPS5798220A
JPS5798220A JP17379680A JP17379680A JPS5798220A JP S5798220 A JPS5798220 A JP S5798220A JP 17379680 A JP17379680 A JP 17379680A JP 17379680 A JP17379680 A JP 17379680A JP S5798220 A JPS5798220 A JP S5798220A
Authority
JP
Japan
Prior art keywords
fluorene
fraction
oil
crystallization
methylfluorene
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
Application number
JP17379680A
Other languages
Japanese (ja)
Inventor
Kiyoshi Sakuma
Norio Tomioka
Hiroshi Okamoto
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.)
SHIN NIPPON SEITETSU KAGAKU KOGYO KK
Nippon Steel Chemical and Materials Co Ltd
Original Assignee
SHIN NIPPON SEITETSU KAGAKU KOGYO KK
Nippon Steel Chemical Co 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 SHIN NIPPON SEITETSU KAGAKU KOGYO KK, Nippon Steel Chemical Co Ltd filed Critical SHIN NIPPON SEITETSU KAGAKU KOGYO KK
Priority to JP17379680A priority Critical patent/JPS5798220A/en
Publication of JPS5798220A publication Critical patent/JPS5798220A/en
Pending legal-status Critical Current

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

Abstract

PURPOSE: An oil fraction containing fluorene is distilled under concentration regulation of fluorene and 9-methylfluorene and the resultant fraction is subjected to continuous counter-current crystallization to produce high-purity fluorene used as a starting material of resin plasticizer or stabilizer in high yield.
CONSTITUTION: An oil fraction containing fluorene such as treated oil, coal tar fraction of anthracene oil is distilled so that the content of fluorene becomes more than 60wt% and the weight ratio of 9-methylfluorene/fluorene becomes less than 0.1, preferably less than 0.05 to prepare the fluorene fraction. The fluorene fraction is subjected to continuous crystallization to produce high-purity fluorene. The continuous crystallization is carried out by cooling the fraction whose concentration has been regulated to 70W100°C to precipitate the crystal of fluorene and taking out the precipitated crystals by melting at 113W115°C.
USE: A starting material of fluorene derivatives used for production of dyes and drugs.
COPYRIGHT: (C)1982,JPO&Japio
JP17379680A 1980-12-11 1980-12-11 Production of fluorene Pending JPS5798220A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17379680A JPS5798220A (en) 1980-12-11 1980-12-11 Production of fluorene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17379680A JPS5798220A (en) 1980-12-11 1980-12-11 Production of fluorene

Publications (1)

Publication Number Publication Date
JPS5798220A true JPS5798220A (en) 1982-06-18

Family

ID=15967310

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17379680A Pending JPS5798220A (en) 1980-12-11 1980-12-11 Production of fluorene

Country Status (1)

Country Link
JP (1) JPS5798220A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103224441A (en) * 2013-05-08 2013-07-31 天津大学 Crystallization method for fluorene purification

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103224441A (en) * 2013-05-08 2013-07-31 天津大学 Crystallization method for fluorene purification

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