JPS55124731A - Preparation of polybromodiphenyl ether - Google Patents
Preparation of polybromodiphenyl etherInfo
- Publication number
- JPS55124731A JPS55124731A JP3171179A JP3171179A JPS55124731A JP S55124731 A JPS55124731 A JP S55124731A JP 3171179 A JP3171179 A JP 3171179A JP 3171179 A JP3171179 A JP 3171179A JP S55124731 A JPS55124731 A JP S55124731A
- Authority
- JP
- Japan
- Prior art keywords
- ether
- polybromodiphenyl
- temperature
- perchloroethylene
- solvent
- 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
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain the title compound consisting mainly of decabromodipheyl ether, useful as a flame retarder of a synthetic resin, in high yield, by the two-stage reaction at different temperature, in the solvent of perchloroethylene.
CONSTITUTION: Diphenyl ether, perchloroethylene as a solvent, and Al powder as a catalyst, are stirred together, and a brominating agent e.g. bromine, in an amount enough to make the diphenyl ether into decabromodiphenyl ether, is added to the mixture at 70°C or below, and heated to a temperature at which the brominating agent will not remain. The resulting mixture is heated at a decomposition temperature of tetrachlorodibromoethane, e.g. at 80°C or above, and a polybromodiphenyl ether and the unreacted diphenyl ether are further brominated, if any, with the bromine produced through the decomposition, to obtain a polybromodiphenyl ether consisting mainly of decabromodiphenyl ether.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3171179A JPS55124731A (en) | 1979-03-20 | 1979-03-20 | Preparation of polybromodiphenyl ether |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3171179A JPS55124731A (en) | 1979-03-20 | 1979-03-20 | Preparation of polybromodiphenyl ether |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55124731A true JPS55124731A (en) | 1980-09-26 |
Family
ID=12338650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3171179A Pending JPS55124731A (en) | 1979-03-20 | 1979-03-20 | Preparation of polybromodiphenyl ether |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55124731A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4701564A (en) * | 1985-07-03 | 1987-10-20 | Atochem | Process for the preparation of brominated derivatives of diphenyl ether |
-
1979
- 1979-03-20 JP JP3171179A patent/JPS55124731A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4701564A (en) * | 1985-07-03 | 1987-10-20 | Atochem | Process for the preparation of brominated derivatives of diphenyl ether |
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