JPS54125643A - Decolorization of decabromobiphenyl - Google Patents
Decolorization of decabromobiphenylInfo
- Publication number
- JPS54125643A JPS54125643A JP3304678A JP3304678A JPS54125643A JP S54125643 A JPS54125643 A JP S54125643A JP 3304678 A JP3304678 A JP 3304678A JP 3304678 A JP3304678 A JP 3304678A JP S54125643 A JPS54125643 A JP S54125643A
- Authority
- JP
- Japan
- Prior art keywords
- bromine
- decabromobiphenyl
- unreactive
- discolored
- biphenyl
- 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
Abstract
PURPOSE: To decolorize the title compound useful as a flame retardant, by heating a discolored decabromobiphenyl obtained from bromination of biphenyl with an excess of bromine in the presence of an aqueous solution of a reducing agent and a specific solvent which is unreactive with the bromine in the presence of water.
CONSTITUTION: Discolored decabromobiphenyl, obtained by brominating biphenyl with bromine in an amount more than that theretically required in the presence of a catalyst, e.g. AlCl3, and by removing the bromine,is heated in the presence of an aqueous solution of a reducing agent, e.g. NaSO3 or KSO3, and an organic solvent, e.g. hexane or heptane, unreactive with the bromine in the presence of water, and decolorized.
EFFECT: No by-product is formed from decolorization step, and large-scale reactor or solvent recovery units are unnecessary.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3304678A JPS54125643A (en) | 1978-03-24 | 1978-03-24 | Decolorization of decabromobiphenyl |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3304678A JPS54125643A (en) | 1978-03-24 | 1978-03-24 | Decolorization of decabromobiphenyl |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54125643A true JPS54125643A (en) | 1979-09-29 |
Family
ID=12375831
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3304678A Pending JPS54125643A (en) | 1978-03-24 | 1978-03-24 | Decolorization of decabromobiphenyl |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54125643A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010509346A (en) * | 2006-11-09 | 2010-03-25 | アルベマール・コーポレーシヨン | Treatment of solid brominated aromatic organic compounds containing occluded bromine. |
-
1978
- 1978-03-24 JP JP3304678A patent/JPS54125643A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010509346A (en) * | 2006-11-09 | 2010-03-25 | アルベマール・コーポレーシヨン | Treatment of solid brominated aromatic organic compounds containing occluded bromine. |
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