GB823640A - Preparation of bis-2:2-(p-hydroxyphenyl propane - Google Patents

Preparation of bis-2:2-(p-hydroxyphenyl propane

Info

Publication number
GB823640A
GB823640A GB17755/58A GB1775558A GB823640A GB 823640 A GB823640 A GB 823640A GB 17755/58 A GB17755/58 A GB 17755/58A GB 1775558 A GB1775558 A GB 1775558A GB 823640 A GB823640 A GB 823640A
Authority
GB
United Kingdom
Prior art keywords
bis
phenol
catalyst
water
product
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
GB17755/58A
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.)
Rhone Poulenc SA
Original Assignee
Rhone Poulenc SA
Societe des Usines Chimiques Rhone Poulenc SA
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 Rhone Poulenc SA, Societe des Usines Chimiques Rhone Poulenc SA filed Critical Rhone Poulenc SA
Publication of GB823640A publication Critical patent/GB823640A/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
    • C07C37/11—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms
    • C07C37/20—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms using aldehydes or ketones

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

Abstract

Bis - 2,2 - (p - hydroxyphenyl) propane is produced by condensing acetone with phenol in the presence of concentrated sulphuric acid (i.e. acid of at least 85% strength) diluted with acetic acid, using as catalyst a mercapto-alkane sulphonic acid or a salt or ester thereof. The catalyst preferably constitutes 0.1 to 5% by weight of the reaction mixture. The acetic acid (glacial) is preferably equal in weight to the sulphuric acid employed. The mol. ratio of phenol to acetone should lie within the range of 2 : 1 to 8 : 1. The condensation temperature is preferably between 15 DEG C. and 25 DEG C. In Example 1, sodium b -mercaptoethanesulphonate is employed as catalyst. The pasty condensation product is poured into water, and crystalline bis-(hydroxyphenyl) propane contaminated with phenol is obtained. The crystals are centrifuged, and washed with water. They are then suspended in water the residual acidity is neutralized with sodium acetate, and the product is heated at 90 DEG C. with agitation until the bis-(hydroxyphenyl) propane is liquefied. The mixture is cooled to 30 DEG C. with agitation; and the crystals are centrifuged and washed with water. Residual phenol is removed from the product by steam-distillation. The product is dried at 80 DEG C. and may, if desired, be recrystallized from chlorobenzene. In Example 2, sodium o -mercaptopropanesulphonate is used as catalyst.
GB17755/58A 1957-06-03 1958-06-03 Preparation of bis-2:2-(p-hydroxyphenyl propane Expired GB823640A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR823640X 1957-06-03

Publications (1)

Publication Number Publication Date
GB823640A true GB823640A (en) 1959-11-18

Family

ID=9281452

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17755/58A Expired GB823640A (en) 1957-06-03 1958-06-03 Preparation of bis-2:2-(p-hydroxyphenyl propane

Country Status (1)

Country Link
GB (1) GB823640A (en)

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