JPS57159733A - Purification of crude bisphenol a - Google Patents

Purification of crude bisphenol a

Info

Publication number
JPS57159733A
JPS57159733A JP56045248A JP4524881A JPS57159733A JP S57159733 A JPS57159733 A JP S57159733A JP 56045248 A JP56045248 A JP 56045248A JP 4524881 A JP4524881 A JP 4524881A JP S57159733 A JPS57159733 A JP S57159733A
Authority
JP
Japan
Prior art keywords
bisphenol
water
mixture
separated
cooled
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
JP56045248A
Other languages
Japanese (ja)
Inventor
Hajime Mori
Kazuhiro Fujii
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.)
Mitsubishi Kasei Corp
Original Assignee
Mitsubishi Kasei Corp
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 Mitsubishi Kasei Corp filed Critical Mitsubishi Kasei Corp
Priority to JP56045248A priority Critical patent/JPS57159733A/en
Publication of JPS57159733A publication Critical patent/JPS57159733A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

PURPOSE: Melted crude bisphenol A containing water in a more than specified proportion is cooled and a part of it is crystallized out and separated, thus producing high-quality bisphenol A with industrial advantage without use of a large amount of water.
CONSTITUTION: Crude bisphenol A resulting from reaction between phenol and acetone in the presence of an acidic catalyst is heated together with more than 5wt% water, preferably 5W20wt%, the minimum amount necessary for melting point depression, in a vessel equipped with heaters and a stirrer and fused. Then, the mixture is cooled to a little lower temperature than the melting point of the mixture and the removal of heat is controlled so that 50W90wt% of the bisphenol A exists in the melted state in the mixture and the remaining crystallizes out. The crystals are separated by filtration. When necessary, the separated crystals are washed with water and dried at lower than 130°C.
COPYRIGHT: (C)1982,JPO&Japio
JP56045248A 1981-03-27 1981-03-27 Purification of crude bisphenol a Pending JPS57159733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56045248A JPS57159733A (en) 1981-03-27 1981-03-27 Purification of crude bisphenol a

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56045248A JPS57159733A (en) 1981-03-27 1981-03-27 Purification of crude bisphenol a

Publications (1)

Publication Number Publication Date
JPS57159733A true JPS57159733A (en) 1982-10-01

Family

ID=12713957

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56045248A Pending JPS57159733A (en) 1981-03-27 1981-03-27 Purification of crude bisphenol a

Country Status (1)

Country Link
JP (1) JPS57159733A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529823A (en) * 1984-04-02 1985-07-16 General Electric Company Purification of bisphenol-A
US5202505A (en) * 1992-03-24 1993-04-13 Hoechst Celanese Corporation Purification of hydroxyphenyl alkanes
JPH05294871A (en) * 1992-04-14 1993-11-09 Nippon Steel Chem Co Ltd Production of bisphenol a
US5756781A (en) * 1995-09-29 1998-05-26 General Electric Company Method for making tris(hydroxyphenyl) compounds using ion exchange
WO1999051558A1 (en) * 1998-04-06 1999-10-14 General Electric Company Descaling of bisphenol-a reactor using water

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529823A (en) * 1984-04-02 1985-07-16 General Electric Company Purification of bisphenol-A
US5202505A (en) * 1992-03-24 1993-04-13 Hoechst Celanese Corporation Purification of hydroxyphenyl alkanes
JPH05294871A (en) * 1992-04-14 1993-11-09 Nippon Steel Chem Co Ltd Production of bisphenol a
US5756781A (en) * 1995-09-29 1998-05-26 General Electric Company Method for making tris(hydroxyphenyl) compounds using ion exchange
WO1999051558A1 (en) * 1998-04-06 1999-10-14 General Electric Company Descaling of bisphenol-a reactor using water
US6011184A (en) * 1998-04-06 2000-01-04 General Electric Company Descaling of bisphenol-A reactor using water

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