GB1101579A - Process for the separation of isopropylphenols - Google Patents

Process for the separation of isopropylphenols

Info

Publication number
GB1101579A
GB1101579A GB4235866A GB4235866A GB1101579A GB 1101579 A GB1101579 A GB 1101579A GB 4235866 A GB4235866 A GB 4235866A GB 4235866 A GB4235866 A GB 4235866A GB 1101579 A GB1101579 A GB 1101579A
Authority
GB
United Kingdom
Prior art keywords
isomer
benzene
mixture
separation
isopropylphenol
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
GB4235866A
Inventor
Guy Francois Marie Bertholm
Robert Marc Perrin
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.)
Centre National de la Recherche Scientifique CNRS
Original Assignee
Centre National de la Recherche Scientifique CNRS
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 Centre National de la Recherche Scientifique CNRS filed Critical Centre National de la Recherche Scientifique CNRS
Publication of GB1101579A publication Critical patent/GB1101579A/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
    • C07C37/685—Processes comprising at least two steps in series
    • 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
    • C07C37/72—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by liquid-liquid treatment
    • 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
    • C07C37/86—Purification; separation; Use of additives, e.g. for stabilisation by treatment giving rise to a chemical modification

Landscapes

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

Abstract

The separation of p-isopropylphenol from the m-isomer is effected by sulphonating the mixture with conc. H2SO4, extracting with benzene, and recovering the p-isomer from the organic phase by distilling off the benzene, allowing the residue to stand and separating the precipitate of pure p-isomer. The aqueous phase deposits crystals of sulphonated m-isopropylphenol, which are separated and hydrolysed with steam/H2SO4 to the phenol. Where the initial mixture contains also diisopropylphenol, its solution in aq. alkali is benzene-extracted to remove the latter, and the alkaline phase treated with strong acid to give the mixture to be sulphonated.
GB4235866A 1965-09-23 1966-09-22 Process for the separation of isopropylphenols Expired GB1101579A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR32466A FR1457681A (en) 1965-09-23 1965-09-23 Process for the separation of meta- and para-isopropylphenols

Publications (1)

Publication Number Publication Date
GB1101579A true GB1101579A (en) 1968-01-31

Family

ID=8588954

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4235866A Expired GB1101579A (en) 1965-09-23 1966-09-22 Process for the separation of isopropylphenols

Country Status (3)

Country Link
DE (1) DE1543497A1 (en)
FR (1) FR1457681A (en)
GB (1) GB1101579A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19954141A1 (en) 1999-11-11 2001-06-13 Phenolchemie Gmbh & Co Kg Reduction of salt content of high-boiling fraction, useful for carbon black production, obtained in phenol production from cumene involves dilution with organic liquid before extraction

Also Published As

Publication number Publication date
FR1457681A (en) 1966-01-24
DE1543497A1 (en) 1969-09-18

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