GB768945A - Process for the manufacture of terephthalic acid - Google Patents
Process for the manufacture of terephthalic acidInfo
- Publication number
- GB768945A GB768945A GB3570453A GB3570453A GB768945A GB 768945 A GB768945 A GB 768945A GB 3570453 A GB3570453 A GB 3570453A GB 3570453 A GB3570453 A GB 3570453A GB 768945 A GB768945 A GB 768945A
- Authority
- GB
- United Kingdom
- Prior art keywords
- para
- methyl styrene
- weight
- terephthalic acid
- manufacture
- 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
A process for the manufacture of terephthalic acid comprises oxidizing p-methyl styrene with nitric acid having an initial strength between 3 and 60 per cent by weight and being present initially in an amount containing between 1.4 and 20 parts by weight of 100 per cent HNO3 per 1 part by weight of para-methyl styrene at a pressure above atmospheric and at a temperature of from 110 DEG to 250 DEG C. Examples are furnished in which terephthalic acid, together with some para-toluic acid is produced by nitric acid oxidation of para-methyl styrene. Para-methyl styrene is produced by reacting together toluene and paraldehyde in the presence of hydrogen fluoride to obtain 1 : 1-di-para-tolylethane which is converted, by the process of Specification 592,867, [Group IV], by passing a mixture thereof with steam over a hydrated aluminium silicate catalyst. Specifications 655,074, 662,139, 662,229 and 698,734 also are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3570453A GB768945A (en) | 1953-12-23 | 1953-12-23 | Process for the manufacture of terephthalic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3570453A GB768945A (en) | 1953-12-23 | 1953-12-23 | Process for the manufacture of terephthalic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB768945A true GB768945A (en) | 1957-02-27 |
Family
ID=10380648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3570453A Expired GB768945A (en) | 1953-12-23 | 1953-12-23 | Process for the manufacture of terephthalic acid |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB768945A (en) |
-
1953
- 1953-12-23 GB GB3570453A patent/GB768945A/en not_active Expired
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