ES237203A1 - Procedure for obtaining orthophthal acid. (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for obtaining orthophthal acid. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES237203A1 ES237203A1 ES0237203A ES237203A ES237203A1 ES 237203 A1 ES237203 A1 ES 237203A1 ES 0237203 A ES0237203 A ES 0237203A ES 237203 A ES237203 A ES 237203A ES 237203 A1 ES237203 A1 ES 237203A1
- Authority
- ES
- Spain
- Prior art keywords
- liquid
- ortho
- translation
- acid
- 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 ortho-phthalic acid, characterized in that it comprises oxidizing xylene or an intimately related oxygenated derivative thereof, or the toluene halomethylation product, or an intimately related oxygenated derivative thereof, containing at least some ortho -compound, in the liquid phase, by means of oxygen, ozone or a gas containing oxygen, preferably using a solvent and, as a catalyst, the halide, especially the bromide, of at least one variable valence metal; the subjecting to mixture, during oxidation, after them or at a different stage, to conditions that decrease the partial pressure of water on the liquid, by means of which ortho-phthalic anhydride which remains in solution in the liquid is formed; the removal of iso- and terephthalic acids; subjecting the residual solution containing the solvent to hydrolysis in the liquid phase, with at least the stoichiometric ratio of water; and separating the resulting orthophthalic acid from the liquid reaction medium. (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES0237203A ES237203A1 (en) | 1957-08-19 | 1957-08-19 | Procedure for obtaining orthophthal acid. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES0237203A ES237203A1 (en) | 1957-08-19 | 1957-08-19 | Procedure for obtaining orthophthal acid. (Machine-translation by Google Translate, not legally binding) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES237203A1 true ES237203A1 (en) | 1958-03-16 |
Family
ID=34444943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES0237203A Expired ES237203A1 (en) | 1957-08-19 | 1957-08-19 | Procedure for obtaining orthophthal acid. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES237203A1 (en) |
-
1957
- 1957-08-19 ES ES0237203A patent/ES237203A1/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1004895A (en) | Process for the production of isophthalic and terephthalic acids | |
| CH609321A5 (en) | Process for the preparation of carboxylic acid anhydrides | |
| GB655074A (en) | An improved process for the preparation of terephthalic acid | |
| GB948687A (en) | Process for producing acrylic acid and acrylic acid methyl ester | |
| ES237203A1 (en) | Procedure for obtaining orthophthal acid. (Machine-translation by Google Translate, not legally binding) | |
| GB907926A (en) | Improvements in or relating to the production of trimellitic acid and trimellitic anhydride | |
| GB798619A (en) | Oxidation of aralkyl compounds to aromatic carboxylic acids | |
| GB831902A (en) | Improvements in and relating to a process for the production of terephthalic acid | |
| ES370802A1 (en) | Process for the production of c2-4 peroxycarboxylic acids | |
| SU136358A1 (en) | The method of obtaining phthalic anhydride | |
| GB832012A (en) | Improvements in and relating to the oxidation of organic compounds | |
| GB1166636A (en) | Process for the production of Cycloacetal Esters and Cycloketal Esters | |
| GB878063A (en) | Improvements in the production of dimethyl terephthalate | |
| GB862391A (en) | A process for the production of dimethyl terephthalate by catalytic oxidation of p-xylene and an apparatus for carrying out the process | |
| GB1030847A (en) | Process for the preparation of aromatic carboxylic acids | |
| ES361739A1 (en) | Production of phthalic acids | |
| GB877002A (en) | Oxidation of alkylnaphthalenes | |
| GB837936A (en) | A process for the purification of an ester of terephthalic or isophthalic acid | |
| ES403479A1 (en) | Method for producing monomethyl terepthalate | |
| GB843181A (en) | Process for the oxidation of aromatic hydrocarbons | |
| GB894735A (en) | A process for the production of cyclohexanol and cyclohexanone | |
| ES257701A1 (en) | Procedure for the preparation of esters of bencenodicarboxylic acids (Machine-translation by Google Translate, not legally binding) | |
| ES437932A1 (en) | Process for purifying the waste water from the production of polybasic carboxylic acid esters | |
| GB996265A (en) | Process for the manufacture of vinyl esters | |
| JPS55143934A (en) | Preparation of terephthalic acid |