JPS55167285A - Preparation of dibenzofuran - Google Patents
Preparation of dibenzofuranInfo
- 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
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
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) |
-
1979
- 1979-06-11 JP JP7225879A patent/JPS55167285A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6121557B2 (en) | 1986-05-27 |
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