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GB596034A - Improvements relating to the production of unsaturated carboxylic acids - Google Patents

Improvements relating to the production of unsaturated carboxylic acids

Info

Publication number
GB596034A
GB596034A GB1812845A GB1812845A GB596034A GB 596034 A GB596034 A GB 596034A GB 1812845 A GB1812845 A GB 1812845A GB 1812845 A GB1812845 A GB 1812845A GB 596034 A GB596034 A GB 596034A
Authority
GB
United Kingdom
Prior art keywords
acid
lead
oxygen
carboxylic acids
unsaturated carboxylic
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
GB1812845A
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.)
Individual
Original Assignee
Individual
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB596034A publication Critical patent/GB596034A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/21Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/25Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/21Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/25Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring
    • C07C51/252Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring of propene, butenes, acrolein or methacrolein

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)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

Unsaturated carboxylic acids are produced by treating their corresponding aldehydes in the liquid phase with a gas containing oxygen in the presence of a catalyst consisting of the salts of unsaturated fatty acids containing more than ten carbon atoms, e.g. oleic acid, with a plurality of multivalent metals, e.g. lead, manganese and cobalt. In the preparation of unsaturated acids, such as acrylic acid, methacrylic acid and crotonic acid, which possess a strong tendency to undergo polymerization, it is advantageous to use oxygen or a current of air enriched by oxygen with a catalyst containing a lead salt, and not allowing the temperature to rise above 35 DEG C. When the aldehyde is a solid or a liquid of high viscosity, the oxidation may be carried out in an inert solvent, e.g. esters such as ethyl acetate. A catalyst consisting of a mixture of lead, manganese and cobalt oleates is used in examples in which cinnamic acid, oenanthylidene-oenanthic acid, crotonic acid, acrylic acid and a -ethyl hexenoic acid are obtained by the oxidation of their corresponding aldehydes. Specifications 550,134 and 560,166 are referred to.
GB1812845A 1945-07-16 Improvements relating to the production of unsaturated carboxylic acids Expired GB596034A (en)

Publications (1)

Publication Number Publication Date
GB596034A true GB596034A (en) 1947-12-24

Family

ID=1733670

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1812845A Expired GB596034A (en) 1945-07-16 Improvements relating to the production of unsaturated carboxylic acids

Country Status (1)

Country Link
GB (1) GB596034A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1244768B (en) * 1963-02-06 1967-07-20 Hoechst Ag Process for the production of sorbic acid or its alkali metal salts by the oxidation of sorbic aldehyde
DE1245363B (en) * 1957-03-18 1967-07-27 Standard Oil Co Process for the production of acrylic acid or methacrylic acid by the oxidation of acrolein or methacrolein
DE1253703B (en) * 1960-04-14 1967-11-09 Distillers Co Yeast Ltd Process for the production of acrylic or methacrylic acid from acrolein, methacrolein or propylene
DE1543046B1 (en) * 1964-02-13 1971-02-11 Ici Ltd Process for the production of acrylic acid

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1245363B (en) * 1957-03-18 1967-07-27 Standard Oil Co Process for the production of acrylic acid or methacrylic acid by the oxidation of acrolein or methacrolein
DE1253703B (en) * 1960-04-14 1967-11-09 Distillers Co Yeast Ltd Process for the production of acrylic or methacrylic acid from acrolein, methacrolein or propylene
DE1244768B (en) * 1963-02-06 1967-07-20 Hoechst Ag Process for the production of sorbic acid or its alkali metal salts by the oxidation of sorbic aldehyde
DE1543046B1 (en) * 1964-02-13 1971-02-11 Ici Ltd Process for the production of acrylic acid

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