GB1149322A - An improved process for purifying 4,4'-isopropylidenediphenol - Google Patents

An improved process for purifying 4,4'-isopropylidenediphenol

Info

Publication number
GB1149322A
GB1149322A GB17825/67A GB1782567A GB1149322A GB 1149322 A GB1149322 A GB 1149322A GB 17825/67 A GB17825/67 A GB 17825/67A GB 1782567 A GB1782567 A GB 1782567A GB 1149322 A GB1149322 A GB 1149322A
Authority
GB
United Kingdom
Prior art keywords
mixture
crystals
water
diphenol
weight
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.)
Expired
Application number
GB17825/67A
Inventor
Gordon Floyd Dugan
Alexander Herman Widiger
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Priority to GB17825/67A priority Critical patent/GB1149322A/en
Publication of GB1149322A publication Critical patent/GB1149322A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
    • C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
    • C07C37/84—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by crystallisation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1,149,322. Purifying isopropylidene (diphenol. DOW CHEMICAL CO. 18 April, 1967, No. 17825/67. Heading C2C. A process for purifying crude 4,4<SP>1</SP>-isopropyl idene diphenol prepared from acetone and phenol which contains phenol and isomeric diphenols and other phenolic impurities comprises mixing the crude diphenol with water in the ratio of 0À5 to 2À0 parts by weight of water per part by weight of crude diphenol, heating the resulting mixture to a temperature sufficient to melt any crystals, agitating the resulting fluid mixture before or while cooling said mixture to a temperature at which a substantial portion of the 4,4<SP>1</SP>-isopropylidenediphenol crystallizes and separating the resulting crystals. In a modified process crystalline material is separated at 40‹ to 50‹ C. from the reaction mixture which is obtained on completion of the reaction between acetone and phenol washed with water, water is added to the washed crystals in an amount of 0À5 to 2 parts by weight of water per part by weight of wet crystals, the mixture of crystals and water is heated sufficiently to melt the crystals, the mixture is cooled to cause crystallization of the 4,41-isopropylidene diphenol which is then separated from the mixture. Examples are furnished.
GB17825/67A 1967-04-18 1967-04-18 An improved process for purifying 4,4'-isopropylidenediphenol Expired GB1149322A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB17825/67A GB1149322A (en) 1967-04-18 1967-04-18 An improved process for purifying 4,4'-isopropylidenediphenol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17825/67A GB1149322A (en) 1967-04-18 1967-04-18 An improved process for purifying 4,4'-isopropylidenediphenol

Publications (1)

Publication Number Publication Date
GB1149322A true GB1149322A (en) 1969-04-23

Family

ID=10101882

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17825/67A Expired GB1149322A (en) 1967-04-18 1967-04-18 An improved process for purifying 4,4'-isopropylidenediphenol

Country Status (1)

Country Link
GB (1) GB1149322A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4180683A (en) * 1977-12-23 1979-12-25 General Electric Company Process for recovering 2,2-bis(4-hydroxyphenyl)propane from distillation residues from the preparation thereof
WO1980000150A1 (en) * 1978-06-27 1980-02-07 Gen Electric Process for recovering 2,2-bis(4-hydroxyphenyl)propane from an adduct of 2,2-bis(4-hydroxyphenyl)propane and phenol
US4192954A (en) 1977-12-23 1980-03-11 General Electric Company Process for preparing 2,2-bis(4-hydroxy-phenyl) propane from distillation by-products thereof
FR2462409A1 (en) * 1979-08-03 1981-02-13 Rhone Poulenc Ind PROCESS FOR PREPARING BISPHENOL-F SOLID PARTICLES
US4300000A (en) 1977-12-28 1981-11-10 General Electric Company Process for the recovery of 2,2-bis(4-hydroxyphenyl)propane
US4447655A (en) * 1982-11-24 1984-05-08 General Electric Company Purification of bisphenol-A
EP0400171A1 (en) * 1988-02-29 1990-12-05 The Dow Chemical Company Countercurrent multi-stage water crystallization for aromatic compounds
US5006920A (en) * 1987-03-18 1991-04-09 Telenorma Telefonbau Und Normalzeit Gmbh Electrical components
EP0694517A1 (en) * 1994-07-28 1996-01-31 General Electric Company Purification of bisphenol-A

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4192954A (en) 1977-12-23 1980-03-11 General Electric Company Process for preparing 2,2-bis(4-hydroxy-phenyl) propane from distillation by-products thereof
US4180683A (en) * 1977-12-23 1979-12-25 General Electric Company Process for recovering 2,2-bis(4-hydroxyphenyl)propane from distillation residues from the preparation thereof
US4300000A (en) 1977-12-28 1981-11-10 General Electric Company Process for the recovery of 2,2-bis(4-hydroxyphenyl)propane
JPS6340775B2 (en) * 1978-06-27 1988-08-12 Gen Electric
WO1980000150A1 (en) * 1978-06-27 1980-02-07 Gen Electric Process for recovering 2,2-bis(4-hydroxyphenyl)propane from an adduct of 2,2-bis(4-hydroxyphenyl)propane and phenol
US4212997A (en) * 1978-06-27 1980-07-15 General Electric Company Process for recovering 2,2-bis(4-hydroxyphenyl)propane from an adduct of 2,2-bis(4-hydroxyphenyl)propane and phenol
FR2462409A1 (en) * 1979-08-03 1981-02-13 Rhone Poulenc Ind PROCESS FOR PREPARING BISPHENOL-F SOLID PARTICLES
US4447655A (en) * 1982-11-24 1984-05-08 General Electric Company Purification of bisphenol-A
US5006920A (en) * 1987-03-18 1991-04-09 Telenorma Telefonbau Und Normalzeit Gmbh Electrical components
EP0400171A1 (en) * 1988-02-29 1990-12-05 The Dow Chemical Company Countercurrent multi-stage water crystallization for aromatic compounds
JPH0324028A (en) * 1988-02-29 1991-02-01 Dow Chem Co:The Refining of aromatic compounds
JP2738958B2 (en) 1988-02-29 1998-04-08 ザ ダウ ケミカル カンパニー Method for purifying aromatic compounds
EP0694517A1 (en) * 1994-07-28 1996-01-31 General Electric Company Purification of bisphenol-A

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