ES402297A3 - Procedure for the obtaining of tereftal acid. (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for the obtaining of tereftal acid. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES402297A3 ES402297A3 ES402297A ES402297A ES402297A3 ES 402297 A3 ES402297 A3 ES 402297A3 ES 402297 A ES402297 A ES 402297A ES 402297 A ES402297 A ES 402297A ES 402297 A3 ES402297 A3 ES 402297A3
- Authority
- ES
- Spain
- Prior art keywords
- acetic acid
- translation
- xylene
- machine
- legally binding
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
"Process for obtaining terephthalic acid" by oxidizing p-xylene with molecular oxygen in a reaction zone in the presence of a liquid medium comprising acetic acid and in the presence of a heavy metal oxidation catalyst and a bromine-promoting compound at a temperature comprised within the limits of 163 to 246º C and a pressure in the range of 3.52 to 35.1 kg/cm2 and the terephthalic acid recovered from the oxidation zone is washed with acetic acid and dried, characterized in that simultaneously at the oxidation zone containing the acetic acid and the catalyst are added at least p-xylene and molecular oxygen in the proper proportion to provide a slight excess of more than 3 moles of oxygen per mole of p-xylene during simultaneous addition, and the terephthalic acid crystals recovered from the fluid effluent from the oxidation zone, after being washed with acetic acid and dried, acterizan by a high performance and a high purity of 98% and more. (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES402297A ES402297A3 (en) | 1972-05-02 | 1972-05-02 | Procedure for the obtaining of tereftal acid. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES402297A ES402297A3 (en) | 1972-05-02 | 1972-05-02 | Procedure for the obtaining of tereftal acid. (Machine-translation by Google Translate, not legally binding) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES402297A3 true ES402297A3 (en) | 1975-11-01 |
Family
ID=8461026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES402297A Expired ES402297A3 (en) | 1972-05-02 | 1972-05-02 | Procedure for the obtaining of tereftal acid. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES402297A3 (en) |
-
1972
- 1972-05-02 ES ES402297A patent/ES402297A3/en not_active Expired
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