GB698734A - Production of terephthalic acid - Google Patents
Production of terephthalic acidInfo
- 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
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.
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)
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 |
-
1950
- 1950-01-02 GB GB54/50A patent/GB698734A/en not_active Expired
Cited By (5)
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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