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GB2011889A - Terephthalic acid - Google Patents

Terephthalic acid

Info

Publication number
GB2011889A
GB2011889A GB7848973A GB7848973A GB2011889A GB 2011889 A GB2011889 A GB 2011889A GB 7848973 A GB7848973 A GB 7848973A GB 7848973 A GB7848973 A GB 7848973A GB 2011889 A GB2011889 A GB 2011889A
Authority
GB
United Kingdom
Prior art keywords
terephthalic acid
isomeric
acids
oxidising
tolualdehydes
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.)
Granted
Application number
GB7848973A
Other versions
GB2011889B (en
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 GB7848973A priority Critical patent/GB2011889B/en
Publication of GB2011889A publication Critical patent/GB2011889A/en
Application granted granted Critical
Publication of GB2011889B publication Critical patent/GB2011889B/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
    • C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/23—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of oxygen-containing groups to carboxyl groups
    • C07C51/235—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of oxygen-containing groups to carboxyl groups of —CHO groups or primary alcohol groups
    • 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
    • C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation

Landscapes

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

Abstract

Terephthalic acid substantially free of isomeric phthalic acids is obtained by oxidising mixed isomeric tolualdehydes and separating terephthalic acid from the isomeric acids.
GB7848973A 1978-01-05 1978-12-18 Aromatic dicarboxylic acids Expired GB2011889B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7848973A GB2011889B (en) 1978-01-05 1978-12-18 Aromatic dicarboxylic acids

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB33178 1978-01-05
GB7848973A GB2011889B (en) 1978-01-05 1978-12-18 Aromatic dicarboxylic acids

Publications (2)

Publication Number Publication Date
GB2011889A true GB2011889A (en) 1979-07-18
GB2011889B GB2011889B (en) 1982-08-04

Family

ID=26235856

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7848973A Expired GB2011889B (en) 1978-01-05 1978-12-18 Aromatic dicarboxylic acids

Country Status (1)

Country Link
GB (1) GB2011889B (en)

Also Published As

Publication number Publication date
GB2011889B (en) 1982-08-04

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Legal Events

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