GB698734A - Production of terephthalic acid - Google Patents

Production of terephthalic acid

Info

Publication number
GB698734A
GB698734A GB54/50A GB5450A GB698734A GB 698734 A GB698734 A GB 698734A GB 54/50 A GB54/50 A GB 54/50A GB 5450 A GB5450 A GB 5450A GB 698734 A GB698734 A GB 698734A
Authority
GB
United Kingdom
Prior art keywords
para
tolualdehyde
cymene
substituent
hydroxy
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
GB54/50A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB698734A publication Critical patent/GB698734A/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
    • C07C51/27—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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Terephthalic acid is made by a modification of the process of the parent Specification characterized in that a para-disubstituted benzene in which one substituent is an alkyl group CnH2n+ 1 where n is less than 4, and the other substituent is taken from the group comprising mono-, di-, and tri-haloalkyl groups, hydroxyalkyl and aldehyde groups and esters thereof, and nitroalkyl, alkenyl, acetal, carboxyl, carbalkoxy and cyano groups is reacted with dilute nitric acid at superatmospheric pressure at a temperature of between 180 DEG C. and 250 DEG C. In examples the following compounds are treated: (1) and (2) para-toluic acid; (3) methyl para-toluate; (4) a -nitro-paraxylene; (5) para-tolualdehyde diacetate; and (6) para-(chloromethyl) toluene. Other starting materials mentioned include para-tolualdehyde, para-ethyl-vinylbenzene, a -chloro-para-xylene, 7 - hydroxy - para - cymene, 8 - hydroxy - para - cymene and para-methyl-benzonitrile.
GB54/50A 1949-08-09 1950-01-02 Production of terephthalic acid Expired GB698734A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US698734XA 1949-08-09 1949-08-09

Publications (1)

Publication Number Publication Date
GB698734A true GB698734A (en) 1953-10-21

Family

ID=22091734

Family Applications (1)

Application Number Title Priority Date Filing Date
GB54/50A Expired GB698734A (en) 1949-08-09 1950-01-02 Production of terephthalic acid

Country Status (1)

Country Link
GB (1) GB698734A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2966514A (en) * 1954-02-25 1960-12-27 Bergwerksverband Gmbh Method of producing benzene polycarboxylic acid
US2970169A (en) * 1955-08-25 1961-01-31 Standard Oil Co Production of polybasic aromatic acids
US2980732A (en) * 1956-10-15 1961-04-18 Heyden Newport Chemical Corp Production of trichlorobenzoic acid
US3105091A (en) * 1957-09-23 1963-09-24 Farberke Hoechst Ag Vormals Me Process for the manufacture of carboxylic acids
US3278592A (en) * 1961-03-15 1966-10-11 Basf Ag Continuous oxidation of aromatic compounds having oxidizable side chains

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2966514A (en) * 1954-02-25 1960-12-27 Bergwerksverband Gmbh Method of producing benzene polycarboxylic acid
US2970169A (en) * 1955-08-25 1961-01-31 Standard Oil Co Production of polybasic aromatic acids
US2980732A (en) * 1956-10-15 1961-04-18 Heyden Newport Chemical Corp Production of trichlorobenzoic acid
US3105091A (en) * 1957-09-23 1963-09-24 Farberke Hoechst Ag Vormals Me Process for the manufacture of carboxylic acids
US3278592A (en) * 1961-03-15 1966-10-11 Basf Ag Continuous oxidation of aromatic compounds having oxidizable side chains

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