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Method For Preparing Indigo Or A Substituted Derivative Thereof
Abstract: The present invention relates to the synthesis of dyes. More specifically, the present invention relates to a method for preparing optionally substituted indigo, the method comprising a step of reacting an optionally substituted anthranilic acid with glyoxylic acid under hydrogenation in the presence of a metal catalyst in a solvent to obtain an optionally substituted 2-(carboxymethylamino)benzoic acid, and a step of converting the latter into optionally substituted indigo.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
18 November 2024
Publication Number
51/2024
Publication Type
INA
Invention Field
CHEMICAL
Status
Email
Parent Application
Applicants
PILI
135 avenue de Rangueil
31077 Toulouse Cedex 4
Inventors
1. GOMES, Filipe
c/o PILI
135 avenue de Rangueil
31077 Toulouse Cedex 4
2. CHEVRON, Océane
c/o PILI
135 avenue de Rangueil
31077 Toulouse Cedex 4
3. COTTET, Kevin
c/o PILI
135 avenue de Rangueil
31077 Toulouse Cedex 4
4. BOISSONNAT, Guillaume
c/o PILI
135 avenue de Rangueil
31077 Toulouse Cedex 4
5. VILONA, Debora
c/o Activation
10 rue Jacquard
69680 Chassieu
6. BOSSET, Cyril
c/o Activation
10 rue Jacquard
69680 Chassieu
7. HENRYON, Vivien
c/o Activation
10 rue Jacquard
69680 Chassieu
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202417089145-STATEMENT OF UNDERTAKING (FORM 3) [18-11-2024(online)].pdf | 2024-11-18 |
| 2 | 202417089145-REQUEST FOR EXAMINATION (FORM-18) [18-11-2024(online)].pdf | 2024-11-18 |
| 3 | 202417089145-FORM 18 [18-11-2024(online)].pdf | 2024-11-18 |
| 4 | 202417089145-FORM 1 [18-11-2024(online)].pdf | 2024-11-18 |
| 5 | 202417089145-DECLARATION OF INVENTORSHIP (FORM 5) [18-11-2024(online)].pdf | 2024-11-18 |
| 6 | 202417089145-COMPLETE SPECIFICATION [18-11-2024(online)].pdf | 2024-11-18 |
| 7 | 202417089145-certified copy of translation [19-11-2024(online)].pdf | 2024-11-19 |
| 8 | 202417089145-Proof of Right [27-11-2024(online)].pdf | 2024-11-27 |
| 9 | 202417089145-FORM-26 [27-11-2024(online)].pdf | 2024-11-27 |
| 10 | 202417089145-certified copy of translation [27-11-2024(online)].pdf | 2024-11-27 |
| 11 | 202417089145-certified copy of translation [13-12-2024(online)].pdf | 2024-12-13 |
| 12 | 202417089145-FORM 3 [02-04-2025(online)].pdf | 2025-04-02 |