GB1450739A - Process for the preparation of aromatic di-and polycarbo- xylic acids - Google Patents

Process for the preparation of aromatic di-and polycarbo- xylic acids

Info

Publication number
GB1450739A
GB1450739A GB2090374A GB2090374A GB1450739A GB 1450739 A GB1450739 A GB 1450739A GB 2090374 A GB2090374 A GB 2090374A GB 2090374 A GB2090374 A GB 2090374A GB 1450739 A GB1450739 A GB 1450739A
Authority
GB
United Kingdom
Prior art keywords
preparation
aromatic
naphthalene
acid
dicarboxylic acid
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
GB2090374A
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.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents 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 Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Priority to GB2090374A priority Critical patent/GB1450739A/en
Priority to DE19752519405 priority patent/DE2519405A1/en
Priority to BE156070A priority patent/BE828742A/en
Priority to NL7505502A priority patent/NL7505502A/en
Priority to IT6818475A priority patent/IT1032840B/en
Priority to FR7514544A priority patent/FR2270229A1/fr
Priority to JP5589375A priority patent/JPS50157330A/ja
Publication of GB1450739A publication Critical patent/GB1450739A/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
    • 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
    • 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

1450739 Preparation of aromatic di- and polycarboxylic acids COAL INDUSTRY (PATENTS) Ltd 23 April 1975 [10 May 1974] 20903/74 Heading C2C The invention comprises a process for preparation of aromatic di- or polycarboxylic acids which comprises oxidizing an aromatic hydrocarbon/aldehyde resin. The oxidation may be carried out by (i) using oxygen under pressure in the presence of water and an alkali metal hydroxide, (ii) heating with a dichromate or (iii) reaction with nitric acid. Examples describe the preparation of naphthalene-1,8-dicarboxylic acid, a mixture comprising trimellitic, pyromellitic and mellitic acids and benzene pentacarboxylic acid, and pyromellitic acid by oxidation of, respectively, naphthalene and toluene-formaldehyde resins. Naphthalene - 1,8 - dicarboxylic acid may be isomerized using the conditions of the Henkel reaction to obtain naphthalene-2,6-dicarboxylic acid.
GB2090374A 1974-05-10 1974-05-10 Process for the preparation of aromatic di-and polycarbo- xylic acids Expired GB1450739A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB2090374A GB1450739A (en) 1974-05-10 1974-05-10 Process for the preparation of aromatic di-and polycarbo- xylic acids
DE19752519405 DE2519405A1 (en) 1974-05-10 1975-04-30 PROCESS FOR THE PRODUCTION OF AROMATIC DI- OR POLYCARBONIC ACIDS AND ACIDS PRODUCED BY THIS PROCESS
BE156070A BE828742A (en) 1974-05-10 1975-05-05 PROCESS FOR THE MANUFACTURING OF AROMATIC POLYCARBOXYLIC ACIDS
NL7505502A NL7505502A (en) 1974-05-10 1975-05-09 PROCESS FOR THE PREPARATION OF AROMATIC DI / AND / OR POLYCARBON ACIDS AND ITS DERIVATIVES.
IT6818475A IT1032840B (en) 1974-05-10 1975-05-09 PROCEDURE FOR THE PREPARATION OF AROMATIC POLYCARBOXYLIC ACIDS
FR7514544A FR2270229A1 (en) 1974-05-10 1975-05-09
JP5589375A JPS50157330A (en) 1974-05-10 1975-05-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2090374A GB1450739A (en) 1974-05-10 1974-05-10 Process for the preparation of aromatic di-and polycarbo- xylic acids

Publications (1)

Publication Number Publication Date
GB1450739A true GB1450739A (en) 1976-09-29

Family

ID=10153734

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2090374A Expired GB1450739A (en) 1974-05-10 1974-05-10 Process for the preparation of aromatic di-and polycarbo- xylic acids

Country Status (7)

Country Link
JP (1) JPS50157330A (en)
BE (1) BE828742A (en)
DE (1) DE2519405A1 (en)
FR (1) FR2270229A1 (en)
GB (1) GB1450739A (en)
IT (1) IT1032840B (en)
NL (1) NL7505502A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112538012B (en) * 2019-09-20 2023-04-07 中国石油化工股份有限公司 Method for purifying 2,6-naphthalenedicarboxylic acid or 2,6-naphthalenedicarboxylic acid dimethyl ester

Also Published As

Publication number Publication date
NL7505502A (en) 1975-11-12
DE2519405A1 (en) 1975-11-20
FR2270229A1 (en) 1975-12-05
JPS50157330A (en) 1975-12-19
IT1032840B (en) 1979-06-20
BE828742A (en) 1975-11-05

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Legal Events

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