GB2000493A - Oxidation process for the preparation of aromatic carboxylic acids - Google Patents

Oxidation process for the preparation of aromatic carboxylic acids

Info

Publication number
GB2000493A
GB2000493A GB7826766A GB7826766A GB2000493A GB 2000493 A GB2000493 A GB 2000493A GB 7826766 A GB7826766 A GB 7826766A GB 7826766 A GB7826766 A GB 7826766A GB 2000493 A GB2000493 A GB 2000493A
Authority
GB
United Kingdom
Prior art keywords
acid
aromatic carboxylic
preparation
washing zone
carboxylic acids
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
GB7826766A
Other versions
GB2000493B (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 GB7826766A priority Critical patent/GB2000493B/en
Publication of GB2000493A publication Critical patent/GB2000493A/en
Application granted granted Critical
Publication of GB2000493B publication Critical patent/GB2000493B/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
    • C07C51/255—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
    • C07C51/265—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting having alkyl side chains which are oxidised to carboxyl groups

Abstract

A reaction slurry of a solid aromatic carboxylic acid such as terephthalic acid in mother liquor such as acetic acid which has been obtained by liquid phase catalytic oxidation of an aromatic compound such as p-xylene in a solvent such as acetic acid is held in a washing zone to allow the solid acid to separate under gravity into fresh solvent fed to the bottom of said washing zone, and a washed slurry of solid acid in solvent is withdrawn from said washing zone.
GB7826766A 1977-07-04 1978-06-13 Oxidation process Expired GB2000493B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7826766A GB2000493B (en) 1977-07-04 1978-06-13 Oxidation process

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2788777 1977-07-04
GB7826766A GB2000493B (en) 1977-07-04 1978-06-13 Oxidation process

Publications (2)

Publication Number Publication Date
GB2000493A true GB2000493A (en) 1979-01-10
GB2000493B GB2000493B (en) 1982-02-03

Family

ID=26259053

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7826766A Expired GB2000493B (en) 1977-07-04 1978-06-13 Oxidation process

Country Status (1)

Country Link
GB (1) GB2000493B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2431479A1 (en) * 1978-07-21 1980-02-15 Mitsubishi Gas Chemical Co PROCESS FOR THE PRODUCTION OF HIGH PURITY TEREPHTHALIC ACID
WO1996030327A1 (en) * 1995-03-27 1996-10-03 Eastman Chemical Company Process for the production of aromatic carboxylic acids

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2431479A1 (en) * 1978-07-21 1980-02-15 Mitsubishi Gas Chemical Co PROCESS FOR THE PRODUCTION OF HIGH PURITY TEREPHTHALIC ACID
WO1996030327A1 (en) * 1995-03-27 1996-10-03 Eastman Chemical Company Process for the production of aromatic carboxylic acids

Also Published As

Publication number Publication date
GB2000493B (en) 1982-02-03

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Legal Events

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