JPS54119430A - Preparation of tetrabromobisphenol s - Google Patents

Preparation of tetrabromobisphenol s

Info

Publication number
JPS54119430A
JPS54119430A JP2499978A JP2499978A JPS54119430A JP S54119430 A JPS54119430 A JP S54119430A JP 2499978 A JP2499978 A JP 2499978A JP 2499978 A JP2499978 A JP 2499978A JP S54119430 A JPS54119430 A JP S54119430A
Authority
JP
Japan
Prior art keywords
tbs
aqueous phase
dispersed
formula
added
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
JP2499978A
Other languages
Japanese (ja)
Inventor
Kimihiko Sato
Isao Goto
Masaaki Ikemura
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.)
AGC Inc
Original Assignee
Asahi Glass 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 Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Priority to JP2499978A priority Critical patent/JPS54119430A/en
Publication of JPS54119430A publication Critical patent/JPS54119430A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the title compound useful as flame retardants of the reaction or addition type for synthetic resins or fibers, in high yield, by brominating bisphenol S dispersed in water solvent.
CONSTITUTION: Bis-phenol S of formula I dispersed in water is brominated with a brominating agent, e.g. Br2 or HBR, to give tetrabromobisphenol S (TBS) of formula II, which is transferred to the organic phase by adding an organic solvent to remove the aqueous phase. An aqueous alkali is added to the organic solvent cont aining TBS to dissolve the resulting TBS salt in the aqueous phase, to which an acid is added to deposit TBS. The TBS thus formed is dried.
EFFECT: The use of separated aqueous phase as an acid reduces the cost in aftertreatment and a high-purity product with a slight discoloration can be obtained. Granulated product is easily handled and valuable.
COPYRIGHT: (C)1979,JPO&Japio
JP2499978A 1978-03-07 1978-03-07 Preparation of tetrabromobisphenol s Pending JPS54119430A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2499978A JPS54119430A (en) 1978-03-07 1978-03-07 Preparation of tetrabromobisphenol s

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2499978A JPS54119430A (en) 1978-03-07 1978-03-07 Preparation of tetrabromobisphenol s

Publications (1)

Publication Number Publication Date
JPS54119430A true JPS54119430A (en) 1979-09-17

Family

ID=12153662

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2499978A Pending JPS54119430A (en) 1978-03-07 1978-03-07 Preparation of tetrabromobisphenol s

Country Status (1)

Country Link
JP (1) JPS54119430A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5008458A (en) * 1989-01-23 1991-04-16 Akzo N.V. Process for purifying crude tetrabromobisphenol sulfone by extraction
JPH03153662A (en) * 1989-11-13 1991-07-01 Tosoh Corp Production of bis(4-hydroxy-3,5-dibromophenyl)sulfone

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5008458A (en) * 1989-01-23 1991-04-16 Akzo N.V. Process for purifying crude tetrabromobisphenol sulfone by extraction
JPH03153662A (en) * 1989-11-13 1991-07-01 Tosoh Corp Production of bis(4-hydroxy-3,5-dibromophenyl)sulfone

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