ES313872A1 - Procedure for the discoloration of a colored aqueous solution of dipotassic therethalate. (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for the discoloration of a colored aqueous solution of dipotassic therethalate. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES313872A1 ES313872A1 ES0313872A ES313872A ES313872A1 ES 313872 A1 ES313872 A1 ES 313872A1 ES 0313872 A ES0313872 A ES 0313872A ES 313872 A ES313872 A ES 313872A ES 313872 A1 ES313872 A1 ES 313872A1
- Authority
- ES
- Spain
- Prior art keywords
- aqueous solution
- discoloration
- translation
- procedure
- machine
- 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
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/47—Separation; Purification; Stabilisation; Use of additives by solid-liquid treatment; by chemisorption
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
Procedure for the decoloration of a colored aqueous solution of dipotassium terephthalate prepared by dissolving in crude dipotassium terephthalate water obtained by thermal transposition of potassium salts of benzocarboxylic acids other than terephthalic acid, in the presence of the usual catalysts for this purpose, in several stages with the help of active carbon, characterized in that the discoloration is carried out in 2 to 5 stages, by reacting in the first stage the aqueous solution of crude dipotassium terephthalate, before removing the catalyst used for the thermal transposition, with the activated carbon and used and coming from the subsequent decolorization step, then removing the activated carbon together with the catalyst from the rearrangement reaction, then bringing the solution in contact with the activated carbon from the subsequent decolorization step and discoloring in the latter. stage the solution ion from the penultimate stage, with the help of new active carbon. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB77336A DE1238002B (en) | 1964-06-20 | 1964-06-20 | Process for decolorizing an aqueous solution of crude dipotassium terephthalate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES313872A1 true ES313872A1 (en) | 1966-02-01 |
Family
ID=6979431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES0313872A Expired ES313872A1 (en) | 1964-06-20 | 1965-06-05 | Procedure for the discoloration of a colored aqueous solution of dipotassic therethalate. (Machine-translation by Google Translate, not legally binding) |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT254179B (en) |
| BE (1) | BE665584A (en) |
| DE (1) | DE1238002B (en) |
| ES (1) | ES313872A1 (en) |
| GB (1) | GB1038816A (en) |
| NL (1) | NL6507780A (en) |
-
1964
- 1964-06-20 DE DEB77336A patent/DE1238002B/en active Pending
-
1965
- 1965-06-05 ES ES0313872A patent/ES313872A1/en not_active Expired
- 1965-06-17 NL NL6507780A patent/NL6507780A/xx unknown
- 1965-06-17 BE BE665584D patent/BE665584A/xx unknown
- 1965-06-18 GB GB25812/65A patent/GB1038816A/en not_active Expired
- 1965-06-18 AT AT552465A patent/AT254179B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| NL6507780A (en) | 1965-12-21 |
| BE665584A (en) | 1965-12-17 |
| AT254179B (en) | 1967-05-10 |
| DE1238002B (en) | 1967-04-06 |
| GB1038816A (en) | 1966-08-10 |
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