GB810893A - A process for the manufacture of terephthalic acid and its salts and other derivatives - Google Patents

A process for the manufacture of terephthalic acid and its salts and other derivatives

Info

Publication number
GB810893A
GB810893A GB472157A GB472157A GB810893A GB 810893 A GB810893 A GB 810893A GB 472157 A GB472157 A GB 472157A GB 472157 A GB472157 A GB 472157A GB 810893 A GB810893 A GB 810893A
Authority
GB
United Kingdom
Prior art keywords
heating
cadmium
terephthalic acid
atmosphere
carbon dioxide
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
GB472157A
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of GB810893A publication Critical patent/GB810893A/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
    • C07C51/41—Preparation of salts of carboxylic acids
    • C07C51/416—Henkel reaction and related reactions, i.e. rearrangement of carboxylate salt groups linked to six-membered aromatic rings, in the absence or in the presence of CO or CO2, (e.g. preparation of terepholates from benzoates); no additional classification for the subsequent hydrolysis of the salt groups has to be given

Landscapes

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

Abstract

Alkali metal salts of terephthalic acid are prepared by heating an alkali metal salt or thallium salt of benzoic acid in the presence of an inert organic compound which is liquid under reaction conditions. Suitable organic compounds are e.g. benzene, naphthalene, diphenyl, ditolyl, diphenyl ether, and pyridine, and they may be separated at the end of the reaction by usual methods and reused after purification. Catalysts such as cadmium, zinc, mercury, iron, lead or compounds thereof are preferably present in the reaction mixture. Examples are given of (1) the heating of potassium benzoate in the presence or absence of cadmium fluoride in an atmosphere of carbon dioxide or nitrogen at 450 DEG C.; (2) heating of potassium benzoate and cadmium powder in an atmosphere of carbon dioxide at 440 DEG C. Super-atmospheric pressures are reached in the course of the reactions. Specifications 744,721 and 777,609 are referred to.
GB472157A 1956-02-13 1957-02-12 A process for the manufacture of terephthalic acid and its salts and other derivatives Expired GB810893A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH26275A DE1004602B (en) 1956-02-13 1956-02-13 Process for the preparation of terephthalic acid

Publications (1)

Publication Number Publication Date
GB810893A true GB810893A (en) 1959-03-25

Family

ID=7150237

Family Applications (1)

Application Number Title Priority Date Filing Date
GB472157A Expired GB810893A (en) 1956-02-13 1957-02-12 A process for the manufacture of terephthalic acid and its salts and other derivatives

Country Status (2)

Country Link
DE (1) DE1004602B (en)
GB (1) GB810893A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111905825A (en) * 2020-08-19 2020-11-10 中原工学院 Zinc coordination polymer catalytic material and preparation method and application thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111905825A (en) * 2020-08-19 2020-11-10 中原工学院 Zinc coordination polymer catalytic material and preparation method and application thereof
CN111905825B (en) * 2020-08-19 2023-01-24 中原工学院 Zinc coordination polymer catalytic material and preparation method and application thereof

Also Published As

Publication number Publication date
DE1004602B (en) 1957-03-21

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