GB870105A - Improvements in the recovery of adipic acid from oxidation products of cyclohexane - Google Patents

Improvements in the recovery of adipic acid from oxidation products of cyclohexane

Info

Publication number
GB870105A
GB870105A GB44104/59A GB4410459A GB870105A GB 870105 A GB870105 A GB 870105A GB 44104/59 A GB44104/59 A GB 44104/59A GB 4410459 A GB4410459 A GB 4410459A GB 870105 A GB870105 A GB 870105A
Authority
GB
United Kingdom
Prior art keywords
adipic acid
methylene chloride
cyclohexane
recovery
oxidation products
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
GB44104/59A
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.)
Lonza Electric and Chemical Works Ltd
Original Assignee
Lonza Electric and Chemical Works Ltd
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 Lonza Electric and Chemical Works Ltd filed Critical Lonza Electric and Chemical Works Ltd
Publication of GB870105A publication Critical patent/GB870105A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C55/00—Saturated compounds having more than one carboxyl group bound to acyclic carbon atoms
    • C07C55/02—Dicarboxylic acids
    • C07C55/14—Adipic acid
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/31—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/31—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting
    • C07C51/313—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting with molecular oxygen

Landscapes

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

Abstract

Adipic acid is recovered from the crude aqueous extract obtained from the cyclohexanol and cyclohexanone-containing reaction products of the oxidation of cyclohexanone with oxygen, by extracting the aqueous entract with methylene chloride to form an aqueous layer and a methylene chloride layer containing impurities, separating and recovering the adipic acid from the aqueous layer. The extraction is carried out with stirring at 35-40 DEG C. or in a multi-stage extractor with a preferred ratio of water to methylene chloride of between 2 and 5 to 1 by volume. The adipic acid is recovered by evaporation and crystallisation. Specification 806,660 is referred to.
GB44104/59A 1959-01-07 1959-12-29 Improvements in the recovery of adipic acid from oxidation products of cyclohexane Expired GB870105A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH870105X 1959-01-07

Publications (1)

Publication Number Publication Date
GB870105A true GB870105A (en) 1961-06-14

Family

ID=4543948

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44104/59A Expired GB870105A (en) 1959-01-07 1959-12-29 Improvements in the recovery of adipic acid from oxidation products of cyclohexane

Country Status (1)

Country Link
GB (1) GB870105A (en)

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