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GB973589A - Recovery of alkali metal salts of benzenecarboxylic acids - Google Patents

Recovery of alkali metal salts of benzenecarboxylic acids

Info

Publication number
GB973589A
GB973589A GB28219/62A GB2821962A GB973589A GB 973589 A GB973589 A GB 973589A GB 28219/62 A GB28219/62 A GB 28219/62A GB 2821962 A GB2821962 A GB 2821962A GB 973589 A GB973589 A GB 973589A
Authority
GB
United Kingdom
Prior art keywords
alkali metal
recovery
metal salts
benzenecarboxylates
benzenecarboxylic acids
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
GB28219/62A
Inventor
Walter Schenk
Albrecht Wallis
Ludwig Vogel
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik AG
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 BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB973589A publication Critical patent/GB973589A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C63/00—Compounds having carboxyl groups bound to a carbon atoms of six-membered aromatic rings
    • C07C63/14—Monocyclic dicarboxylic acids
    • C07C63/15—Monocyclic dicarboxylic acids all carboxyl groups bound to carbon atoms of the six-membered aromatic ring
    • C07C63/16—1,2 - Benzenedicarboxylic acid
    • C07C63/20—Salts thereof
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/41—Preparation of salts of carboxylic acids
    • C07C51/416—Henkel reaction and related reactions, i.e. rearrangement of carboxylate salt groups linked to six-membered aromatic rings, in the absence or in the presence of CO or CO2, (e.g. preparation of terepholates from benzoates); no additional classification for the subsequent hydrolysis of the salt groups has to be given
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Dry neutral alkali metal benzenecarboxylates, which may be thermally converted into other alkali metal benzenecarboxylates, are recovered from their aqueous solutions by adjusting the latter to a pH 0.05-0.9 unit above the point of equivalence by addition of alkali metal hydroxide and dividing the solutions thus obtained into two streams, of which one is led into a conventional evaporator and the other is sprayed into a wash tower through which a CO2-containing gas passes in countercurrent. The sodium and potassium salts of benzoic, phthalic and isophthalic acids are specifically mentioned as recoverable salts. Specification 840,040 and U.S.A. Specification 2,930,813 are referred to.
GB28219/62A 1961-07-21 1962-07-23 Recovery of alkali metal salts of benzenecarboxylic acids Expired GB973589A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB63356A DE1142597B (en) 1961-07-21 1961-07-21 Process for the production of dry, neutral alkali salts of cyclic carboxylic acids

Publications (1)

Publication Number Publication Date
GB973589A true GB973589A (en) 1964-10-28

Family

ID=6973955

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28219/62A Expired GB973589A (en) 1961-07-21 1962-07-23 Recovery of alkali metal salts of benzenecarboxylic acids

Country Status (4)

Country Link
US (1) US3259651A (en)
CH (1) CH409918A (en)
DE (1) DE1142597B (en)
GB (1) GB973589A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529018A (en) * 1966-02-24 1970-09-15 Sun Oil Co Process for continuously and simultaneously drying and liberating organic acids from their metal salts
US3867439A (en) * 1972-04-17 1975-02-18 Dow Chemical Co Preparation of potassium benzoate

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL181266B (en) * 1952-11-21 Du Pont PROCEDURE FOR DECORATING HEAT-RESISTANT SUBSTRATE-APPLIED AND STOVE-HARDENED POLYMER COVERINGS.

Also Published As

Publication number Publication date
US3259651A (en) 1966-07-05
CH409918A (en) 1966-03-31
DE1142597B (en) 1963-01-24

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