GB918283A - Process for the production of monofluorophthalic acids - Google Patents

Process for the production of monofluorophthalic acids

Info

Publication number
GB918283A
GB918283A GB143760A GB143760A GB918283A GB 918283 A GB918283 A GB 918283A GB 143760 A GB143760 A GB 143760A GB 143760 A GB143760 A GB 143760A GB 918283 A GB918283 A GB 918283A
Authority
GB
United Kingdom
Prior art keywords
monofluorophthalic
acids
nitric acid
production
aqueous nitric
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
GB143760A
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Deutsche Gold und Silber Scheideanstalt
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 Degussa GmbH, Deutsche Gold und Silber Scheideanstalt filed Critical Degussa GmbH
Publication of GB918283A publication Critical patent/GB918283A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/68—Polyesters containing atoms other than carbon, hydrogen and oxygen
    • C08G63/682—Polyesters containing atoms other than carbon, hydrogen and oxygen containing halogens
    • C08G63/6824—Polyesters containing atoms other than carbon, hydrogen and oxygen containing halogens derived from polycarboxylic acids and polyhydroxy compounds
    • 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
    • C07C51/275—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with oxides of nitrogen or nitrogen-containing mineral acids of hydrocarbyl groups

Landscapes

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

Abstract

Monofluorophthalic acids are prepared by oxidising fluoroxylenes at elevated temperature and pressure with aqueous nitric acid. The oxidation is preferably carried out at 125-250 DEG C. using 20% nitric acid. In a modification of the process the nitric acid is replaced wholly or in part with nitrous gases. In examples monofluoroxylenes are heated in an autoclave with aqueous nitric acid or nitrogen dioxide and water. The monofluorophthalic acids are crystallised from the cooled reaction solution and filtered off.
GB143760A 1959-01-17 1960-01-14 Process for the production of monofluorophthalic acids Expired GB918283A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED29792A DE1095803B (en) 1959-01-17 1959-01-17 Process for the preparation of monofluorobenzenedicarboxylic acids or their anhydrides

Publications (1)

Publication Number Publication Date
GB918283A true GB918283A (en) 1963-02-13

Family

ID=7040230

Family Applications (1)

Application Number Title Priority Date Filing Date
GB143760A Expired GB918283A (en) 1959-01-17 1960-01-14 Process for the production of monofluorophthalic acids

Country Status (4)

Country Link
BE (1) BE586582A (en)
CH (1) CH379482A (en)
DE (1) DE1095803B (en)
GB (1) GB918283A (en)

Also Published As

Publication number Publication date
BE586582A (en) 1960-05-03
CH379482A (en) 1964-07-15
DE1095803B (en) 1960-12-29

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