JPS6450855A - Purification of 4,4'-dihydroxydiphenylsulfone - Google Patents

Purification of 4,4'-dihydroxydiphenylsulfone

Info

Publication number
JPS6450855A
JPS6450855A JP20843487A JP20843487A JPS6450855A JP S6450855 A JPS6450855 A JP S6450855A JP 20843487 A JP20843487 A JP 20843487A JP 20843487 A JP20843487 A JP 20843487A JP S6450855 A JPS6450855 A JP S6450855A
Authority
JP
Japan
Prior art keywords
salting
dihydroxydiphenylsulfone
added
basic substance
acid
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
JP20843487A
Other languages
Japanese (ja)
Other versions
JPH0478609B2 (en
Inventor
Eiji Ogata
Koji Ono
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.)
Konishi Chemical Ind Co Ltd
Original Assignee
Konishi Chemical Ind 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 Konishi Chemical Ind Co Ltd filed Critical Konishi Chemical Ind Co Ltd
Priority to JP20843487A priority Critical patent/JPS6450855A/en
Priority to DE19883890647 priority patent/DE3890647T1/en
Priority to DE3890647A priority patent/DE3890647C2/en
Priority to PCT/JP1988/000813 priority patent/WO1989001469A1/en
Priority to US07/362,411 priority patent/US5097074A/en
Priority to GB8908173A priority patent/GB2216125B/en
Publication of JPS6450855A publication Critical patent/JPS6450855A/en
Publication of JPH0478609B2 publication Critical patent/JPH0478609B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To obtain the titled compound useful for chemical industry of high polymer efficiently, in high yield and in high purity without using an organic solvent, by dissolving crude 4,4'-dihydroxydiphenylsulfone in an aqueous solution of a basic substance, carrying out salting-out, separation and acid treatment. CONSTITUTION:Crude 4,4'-dihydroxydiphenylsulfone is dissolved in an aqueous solution of a basic substance (e.g. hydroxide of Na, K, Ca or Mg, especially NaOH) and subjected to salting-out. In the salting-out, chloride of Na, K, Ca or Mg is preferably used and added as an agent for salting-out, an excess amount of the basic substance is added to the solution and an acid such as HCl or H2SO4 is added to the solution to form an agent for salting-out or both the methods are used. After salting-out, precipitate is separated by filtration and then treated with an acid such as HCl to give purified 4,4'- dihydroxydiphenylsulfone.
JP20843487A 1987-08-21 1987-08-21 Purification of 4,4'-dihydroxydiphenylsulfone Granted JPS6450855A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP20843487A JPS6450855A (en) 1987-08-21 1987-08-21 Purification of 4,4'-dihydroxydiphenylsulfone
DE19883890647 DE3890647T1 (en) 1987-08-21 1988-08-17 METHOD FOR PURIFYING 4,4'-DIHYDROXYDIPHENYL SULPHONE
DE3890647A DE3890647C2 (en) 1987-08-21 1988-08-17 Process for the purification of crude 4,4'-dihydroxydiphenyl sulfone
PCT/JP1988/000813 WO1989001469A1 (en) 1987-08-21 1988-08-17 Process for purifying 4,4'-dihydroxydiphenyl sulfone
US07/362,411 US5097074A (en) 1987-08-21 1988-08-17 Process for purifying 4,4'-dihydroxydiphenylsulfone
GB8908173A GB2216125B (en) 1987-08-21 1988-08-17 Process for purifying 4,4'-dihydroxydiphenylsulfone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20843487A JPS6450855A (en) 1987-08-21 1987-08-21 Purification of 4,4'-dihydroxydiphenylsulfone

Publications (2)

Publication Number Publication Date
JPS6450855A true JPS6450855A (en) 1989-02-27
JPH0478609B2 JPH0478609B2 (en) 1992-12-11

Family

ID=16556145

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20843487A Granted JPS6450855A (en) 1987-08-21 1987-08-21 Purification of 4,4'-dihydroxydiphenylsulfone

Country Status (1)

Country Link
JP (1) JPS6450855A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0461272A1 (en) * 1989-12-29 1991-12-18 Konishi Chemical Ind. Co., Ltd. Process for producing 4,4'-dihydroxydiphenyl sulfone

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0461272A1 (en) * 1989-12-29 1991-12-18 Konishi Chemical Ind. Co., Ltd. Process for producing 4,4'-dihydroxydiphenyl sulfone
EP0461272B1 (en) * 1989-12-29 1997-08-13 Konishi Chemical Ind. Co., Ltd. Process for producing 4,4'-dihydroxydiphenyl sulfone

Also Published As

Publication number Publication date
JPH0478609B2 (en) 1992-12-11

Similar Documents

Publication Publication Date Title
BR9407655A (en) Method for the production of cyclic T esters
ES2014472B3 (en) GLYCOLIDE PURIFICATION.
BR0116892A (en) Process for the continuous production of ultra high purity electrolytic zinc or ultra high purity zinc compounds from raw materials containing zinc, and ultra pure zinc and compounds thereof
AU7659087A (en) A process for the recovery of rhodium from aqueous solutions containing rhodium complex compounds
DE69016683D1 (en) Sodium N-acetyl neuraminate trihydrate and process for its preparation.
FR2604997B1 (en) PROCESS FOR THE PREPARATION OF TRIFLUOROMETHYL IODIDE
JPS6450855A (en) Purification of 4,4'-dihydroxydiphenylsulfone
KR910007859A (en) Method for producing high purity terephthalic acid
MX159243A (en) PROCEDURE FOR THE PURIFICATION OF PROCESS PHOSPHORIC ACID IN WET
US3174904A (en) Method of purifying sulfated carbohydrates
JPS6450856A (en) Production of 4,4'-dihydroxydiphenylsulfone monometallic salt
JPS5564569A (en) Purification of thioglycolic acid
ES2061918T3 (en) PROCEDURE FOR THE PURIFICATION OF 1,2-BIS (NICOTINAMIDE) PROPANE.
EP0299434A3 (en) High ph recovery of neutral amino acids
RU92014631A (en) METHOD FOR PROCESSING ALUMINUM MANUFACTURING SLUDGE
ATE97127T1 (en) PROCESS FOR PRODUCTION OF NA SALT OF DIETHYLMETANILIC ACID.
SU1586143A1 (en) Method of sodium l-ascorbate purification
JPS6445349A (en) Production of dl-lysine
SU1777371A1 (en) Method of tellurium purification from impurities
AU2979792A (en) Process for removing organic phosphorus compounds and other impurities from dilute sulfuric acid
JPS54131594A (en) Purification of caustic soda
RO100043B1 (en) Preparation and purification method of 2-nytro-5-pheniltiomethoxyacetanylide
JPS5612363A (en) Purification of aromatic sulfinic acid
CS263624B1 (en) Process for the purification of 3/2h/-benzo/d/isothiazolon-1,1-dioxide

Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term
FPAY Renewal fee payment (prs date is renewal date of database)

Year of fee payment: 15

Free format text: PAYMENT UNTIL: 20071211