GB639491A - Process for the manufacture of a dicarboxylic acid - Google Patents

Process for the manufacture of a dicarboxylic acid

Info

Publication number
GB639491A
GB639491A GB755848A GB755848A GB639491A GB 639491 A GB639491 A GB 639491A GB 755848 A GB755848 A GB 755848A GB 755848 A GB755848 A GB 755848A GB 639491 A GB639491 A GB 639491A
Authority
GB
United Kingdom
Prior art keywords
acid
nitric acid
oxidation
manufacture
added gradually
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
GB755848A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB755848A priority Critical patent/GB639491A/en
Publication of GB639491A publication Critical patent/GB639491A/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
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/27—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with oxides of nitrogen or nitrogen-containing mineral acids

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

In the manufacture of ethylene-bis-glycollic acid by nitric acid oxidation of triethylene glycol, the glycol is added gradually to the nitric acid at 40-90 DEG C. The oxidation is preferably carried out in the presence of a vanadium compound, e.g. 0-1 per cent of ammonium vanadate, and the nitric acid may contain sulphuric acid. Nitric acid of higher strength than that originally present (and likewise optionally containing sulphuric acid) may be added gradually to replace the acid consumed in the oxidation, and the process may be operated in batchwise or continuous manner. A detailed example is given and includes a description of the S-benzylthiouranium salt of the product.
GB755848A 1948-03-12 1948-03-12 Process for the manufacture of a dicarboxylic acid Expired GB639491A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB755848A GB639491A (en) 1948-03-12 1948-03-12 Process for the manufacture of a dicarboxylic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB755848A GB639491A (en) 1948-03-12 1948-03-12 Process for the manufacture of a dicarboxylic acid

Publications (1)

Publication Number Publication Date
GB639491A true GB639491A (en) 1950-06-28

Family

ID=9835422

Family Applications (1)

Application Number Title Priority Date Filing Date
GB755848A Expired GB639491A (en) 1948-03-12 1948-03-12 Process for the manufacture of a dicarboxylic acid

Country Status (1)

Country Link
GB (1) GB639491A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2832949A1 (en) * 1978-03-21 1979-10-04 Lonza Ag METHOD FOR PRODUCING METHOXY ACID ACID

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2832949A1 (en) * 1978-03-21 1979-10-04 Lonza Ag METHOD FOR PRODUCING METHOXY ACID ACID

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