JPS55167285A - Preparation of dibenzofuran - Google Patents

Preparation of dibenzofuran

Info

Publication number
JPS55167285A
JPS55167285A JP7225879A JP7225879A JPS55167285A JP S55167285 A JPS55167285 A JP S55167285A JP 7225879 A JP7225879 A JP 7225879A JP 7225879 A JP7225879 A JP 7225879A JP S55167285 A JPS55167285 A JP S55167285A
Authority
JP
Japan
Prior art keywords
dibenzofuran
fraction
oil
give
coal tar
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
JP7225879A
Other languages
Japanese (ja)
Other versions
JPS6121557B2 (en
Inventor
Kiyoshi Sakuma
Kihachiro Oota
Norio Tomioka
Masakazu Takeuchi
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.)
Nippon Steel Chemical and Materials Co Ltd
Original Assignee
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 Nippon Steel Chemical Co Ltd filed Critical Nippon Steel Chemical Co Ltd
Priority to JP7225879A priority Critical patent/JPS55167285A/en
Publication of JPS55167285A publication Critical patent/JPS55167285A/en
Publication of JPS6121557B2 publication Critical patent/JPS6121557B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Furan Compounds (AREA)

Abstract

PURPOSE: To obtain dibenzofuran useful as a raw material for dye, antiseptic or insecticide in high yield, by distilling a coal tar fraction containing dibenzofuran while controlling the composition, and by crystallizing the resulting specific fraction continuously.
CONSTITUTION: A coal tar fraction containing dibenzofuran (D), preferably one or more fractions selected from naphthalene oil, wash oil and anthracene oil are distilled to give the D content of 30wt% or more, a molar ratio of D to acenaphthene ≥1.3, and that of fluorene to D ≤0.05. The D fraction thus obtained is continuously crystallized, separated and recovered to give D in high purity. Preferably, the continuous crystallization is carried out by cooling the specific fraction of the composition decribed above to settle D crystals, which are molten and taken out.
COPYRIGHT: (C)1980,JPO&Japio
JP7225879A 1979-06-11 1979-06-11 Preparation of dibenzofuran Granted JPS55167285A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7225879A JPS55167285A (en) 1979-06-11 1979-06-11 Preparation of dibenzofuran

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7225879A JPS55167285A (en) 1979-06-11 1979-06-11 Preparation of dibenzofuran

Publications (2)

Publication Number Publication Date
JPS55167285A true JPS55167285A (en) 1980-12-26
JPS6121557B2 JPS6121557B2 (en) 1986-05-27

Family

ID=13484080

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7225879A Granted JPS55167285A (en) 1979-06-11 1979-06-11 Preparation of dibenzofuran

Country Status (1)

Country Link
JP (1) JPS55167285A (en)

Also Published As

Publication number Publication date
JPS6121557B2 (en) 1986-05-27

Similar Documents

Publication Publication Date Title
SG44681A1 (en) Process for the purification of 2,6-diisopropyl phenol
ES306649A1 (en) A procedure for continuous recovery of p-xylene from liquid mixtures containing p-xylene. (Machine-translation by Google Translate, not legally binding)
JPS55167285A (en) Preparation of dibenzofuran
JPS5527117A (en) Preparation of isopropenylphenol
JPS5795923A (en) Preparation of beta-methylnaphthalene
JPS55139327A (en) Preparation of high purity para-xylene
DE2102476B2 (en) METHOD FOR PURIFYING O-HYDROXYDIPHENYL
KR890700559A (en) Process for the preparation of para-xylol having a purity of at least 99.5%
ES2007786A6 (en) A method for the production of HNS II.
KR850003737A (en) Method and apparatus for preparing crystalline dextrose monohydrate
DE60100870T2 (en) Process for the production of 2,6-dimethylnaphthalene from mixtures containing it
JPS5750984A (en) Preparation of dibenzofuran
JPS643137A (en) Purification of 2,4-xylenol
JPS5750986A (en) Preparation of dibenzofuran
JPS58121228A (en) Distillation of 1,4-butandiol
Schildknecht Zone melting and column crystallization as analytical tools
JPS5750985A (en) Preparation of dibenzofuran
JPS5266684A (en) Purification and separation of 2-keto-l-glonic acid
JPS5798266A (en) Preparation of isoquinoline
JPS55167230A (en) Separation and purification of terphenyl
JPS5798219A (en) Production of acenaphthene
JPS5373507A (en) Crystallization of pentaerythritol
JPS5798220A (en) Production of fluorene
JPS5798221A (en) Production of diphenyl
US4182921A (en) Method of purifying alkylphenol