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JPS5777666A - Purifying method of dihydroxydiphenyl sulfone - Google Patents

Purifying method of dihydroxydiphenyl sulfone

Info

Publication number
JPS5777666A
JPS5777666A JP15222780A JP15222780A JPS5777666A JP S5777666 A JPS5777666 A JP S5777666A JP 15222780 A JP15222780 A JP 15222780A JP 15222780 A JP15222780 A JP 15222780A JP S5777666 A JPS5777666 A JP S5777666A
Authority
JP
Japan
Prior art keywords
bisphenol
dihydroxydiphenyl sulfone
inorganic peroxide
colored substance
peroxide
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
JP15222780A
Other languages
Japanese (ja)
Other versions
JPS5842186B2 (en
Inventor
Osami Oura
Yasumasa Shimizu
Tsuneo Fukazawa
Koji Kitamura
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.)
TOKAI ELECTRO CHEMICAL CO
TOUKAI DENKA KOGYO KK
Tokai Denka Kogyo KK
Original Assignee
TOKAI ELECTRO CHEMICAL CO
TOUKAI DENKA KOGYO KK
Tokai Denka Kogyo KK
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 TOKAI ELECTRO CHEMICAL CO, TOUKAI DENKA KOGYO KK, Tokai Denka Kogyo KK filed Critical TOKAI ELECTRO CHEMICAL CO
Priority to JP55152227A priority Critical patent/JPS5842186B2/en
Publication of JPS5777666A publication Critical patent/JPS5777666A/en
Publication of JPS5842186B2 publication Critical patent/JPS5842186B2/en
Expired legal-status Critical Current

Links

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

Abstract

PURPOSE: To obtain the titled dihydroxydiphenyl sulfone (bisphenol-S) useful as a raw material for a synthetic resin in high purity, by treating 4,4'-dihydroxydiphenyl sulfone containing a colored substance with an inorganic peroxide.
CONSTITUTION: 4,4'-Dihydroxydiphenyl sulfone (bisphenol-S) containing a colored substance is dissolved in an alkaline aqueous solution, and an inorganic peroxide is then added to decolor the solution. Formed crystals are then separated to give the bisphenol-S having a high degree of whiteness. Hydrogen peroxide, sodium perborate, etc. may be cited as the inorganic peroxide, and the amount thereof is 0.1W 5wt% based on the weight of the bisphenol-S. The use of a sequestering agent, e.g. EDTA, in addition to the inorganic peroxide further improves the decoloring effect.
COPYRIGHT: (C)1982,JPO&Japio
JP55152227A 1980-10-31 1980-10-31 Purification method of dihydroxydiphenyl sulfone Expired JPS5842186B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55152227A JPS5842186B2 (en) 1980-10-31 1980-10-31 Purification method of dihydroxydiphenyl sulfone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55152227A JPS5842186B2 (en) 1980-10-31 1980-10-31 Purification method of dihydroxydiphenyl sulfone

Publications (2)

Publication Number Publication Date
JPS5777666A true JPS5777666A (en) 1982-05-15
JPS5842186B2 JPS5842186B2 (en) 1983-09-17

Family

ID=15535861

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55152227A Expired JPS5842186B2 (en) 1980-10-31 1980-10-31 Purification method of dihydroxydiphenyl sulfone

Country Status (1)

Country Link
JP (1) JPS5842186B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69031272T2 (en) * 1989-12-29 1998-03-26 Konishi Chem Ind METHOD FOR PRODUCING 4,4'-DIHYDROXYDIPHENYL SULPHONE

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5463021A (en) * 1977-10-26 1979-05-21 New Japan Chem Co Ltd Purification of sulfuric ester slats of higher alcohols or ethylene oxide adducts thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5463021A (en) * 1977-10-26 1979-05-21 New Japan Chem Co Ltd Purification of sulfuric ester slats of higher alcohols or ethylene oxide adducts thereof

Also Published As

Publication number Publication date
JPS5842186B2 (en) 1983-09-17

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