GB1346701A - Process for the manufacture of aceto-acetic acid - Google Patents

Process for the manufacture of aceto-acetic acid

Info

Publication number
GB1346701A
GB1346701A GB3999072A GB3999072A GB1346701A GB 1346701 A GB1346701 A GB 1346701A GB 3999072 A GB3999072 A GB 3999072A GB 3999072 A GB3999072 A GB 3999072A GB 1346701 A GB1346701 A GB 1346701A
Authority
GB
United Kingdom
Prior art keywords
hydrogen chloride
aceto
manufacture
acetic acid
diketene
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
GB3999072A
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.)
Wacker Chemie AG
Original Assignee
Wacker Chemie 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
Priority claimed from DE19712154875 external-priority patent/DE2154875C3/en
Application filed by Wacker Chemie AG filed Critical Wacker Chemie AG
Publication of GB1346701A publication Critical patent/GB1346701A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides

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

1346701 Acetoacetic acid WACKERCHEMIE GmbH 29 Aug 1972 [4 Nov 1971] 39990/72 Heading C2C Acetoacetic acid ester is prepared by hydrolysing diketene at from 0 to 30‹ C. with the stoichiometric amount of water in the presence of 10 to 60 mol. per cent of hydrogen chloride, relative to the diketene, and crystallizing the acid at - 40 to 0‹ C. An inert solvent such as an aliphatic hydrocarbon may be used and the hydrogen chloride added as free hydrogen chloride or hydrochloric acid.
GB3999072A 1971-11-04 1972-08-29 Process for the manufacture of aceto-acetic acid Expired GB1346701A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712154875 DE2154875C3 (en) 1971-11-04 Process for the preparation of crystalline acetoacetic acid

Publications (1)

Publication Number Publication Date
GB1346701A true GB1346701A (en) 1974-02-13

Family

ID=5824207

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3999072A Expired GB1346701A (en) 1971-11-04 1972-08-29 Process for the manufacture of aceto-acetic acid

Country Status (6)

Country Link
JP (1) JPS5024292B2 (en)
BE (1) BE790793A (en)
CH (1) CH568954A5 (en)
FR (1) FR2158480B1 (en)
GB (1) GB1346701A (en)
IT (1) IT966777B (en)

Also Published As

Publication number Publication date
DE2154875B2 (en) 1976-04-22
DE2154875A1 (en) 1973-05-10
JPS4854026A (en) 1973-07-30
JPS5024292B2 (en) 1975-08-14
CH568954A5 (en) 1975-11-14
BE790793A (en) 1973-04-30
FR2158480A1 (en) 1973-06-15
IT966777B (en) 1974-02-20
FR2158480B1 (en) 1975-03-28

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee