JPS643139A - Purification of tetrabromobisphenol a - Google Patents

Purification of tetrabromobisphenol a

Info

Publication number
JPS643139A
JPS643139A JP15737187A JP15737187A JPS643139A JP S643139 A JPS643139 A JP S643139A JP 15737187 A JP15737187 A JP 15737187A JP 15737187 A JP15737187 A JP 15737187A JP S643139 A JPS643139 A JP S643139A
Authority
JP
Japan
Prior art keywords
tetrabromobisphenol
solution
under heating
tba
dripping
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
JP15737187A
Other languages
Japanese (ja)
Other versions
JPH013139A (en
JPH07107007B2 (en
Inventor
Michio Aritomi
Toshikazu Maruyama
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.)
Tohto Kasei Co Ltd
Original Assignee
Tohto Kasei 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 Tohto Kasei Co Ltd filed Critical Tohto Kasei Co Ltd
Priority to JP15737187A priority Critical patent/JPH07107007B2/en
Publication of JPS643139A publication Critical patent/JPS643139A/en
Publication of JPH013139A publication Critical patent/JPH013139A/en
Publication of JPH07107007B2 publication Critical patent/JPH07107007B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: To purify tetrabromobisphenol A, by dissolving tetrabromobisphenol A in an aromatic hydrocarbon solvent under heating, treating the solution under azeotropic refluxing dehydration condition while dripping an aqueous solution of an alkali metal hydroxide to the above solution under heating and subjecting the treated product to neutralization, washing with water and cooling to precipitate the objective tetrabromobisphenol A.
CONSTITUTION: The objective purification is carried out to reduce the contents of hydrolyzable bromine and bromine ion in crude tetrabromobisphenol A by the following process. Crude tetrabromobisphenol A (TBA) is dissolved in an aromatic hydrocarbon (especially preferably toluene or xylene and the amount of the hydrocarbon is preferably 1W2pts.wt. per 1pt.wt. of TBA) under heating, the solution is treated under azeotropic refluxing dehydration condition at 100W150°C while dripping an aqueous solution of an alkali metal hydroxide to the solution and the treated product is subjected to neutralization, washing with and cooling to effect the precipitation of purified tetrabromobisphenol A. The purified tetrabromobisphenol A is useful as a flame-retardant for epoxy polymer used in electronic apparatuses.
COPYRIGHT: (C)1989,JPO&Japio
JP15737187A 1987-06-24 1987-06-24 Method for purifying tetrabromobisphenol A Expired - Lifetime JPH07107007B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15737187A JPH07107007B2 (en) 1987-06-24 1987-06-24 Method for purifying tetrabromobisphenol A

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15737187A JPH07107007B2 (en) 1987-06-24 1987-06-24 Method for purifying tetrabromobisphenol A

Publications (3)

Publication Number Publication Date
JPS643139A true JPS643139A (en) 1989-01-06
JPH013139A JPH013139A (en) 1989-01-06
JPH07107007B2 JPH07107007B2 (en) 1995-11-15

Family

ID=15648194

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15737187A Expired - Lifetime JPH07107007B2 (en) 1987-06-24 1987-06-24 Method for purifying tetrabromobisphenol A

Country Status (1)

Country Link
JP (1) JPH07107007B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0574031A1 (en) 1989-01-26 1993-12-15 Tosoh Corporation Process for producing tetrabromobisphenol A
JP2013253062A (en) * 2012-06-08 2013-12-19 Jfe Chemical Corp Method for reducing halogen content in aromatic compound

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA965340B (en) 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
US6885652B1 (en) 1995-06-30 2005-04-26 Interdigital Technology Corporation Code division multiple access (CDMA) communication system
US7929498B2 (en) 1995-06-30 2011-04-19 Interdigital Technology Corporation Adaptive forward power control and adaptive reverse power control for spread-spectrum communications
US7020111B2 (en) 1996-06-27 2006-03-28 Interdigital Technology Corporation System for using rapid acquisition spreading codes for spread-spectrum communications

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0574031A1 (en) 1989-01-26 1993-12-15 Tosoh Corporation Process for producing tetrabromobisphenol A
JP2013253062A (en) * 2012-06-08 2013-12-19 Jfe Chemical Corp Method for reducing halogen content in aromatic compound

Also Published As

Publication number Publication date
JPH07107007B2 (en) 1995-11-15

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