| Titre : |
Research on two-step synthesis method of 12-hydroxystearate diethanolamide |
| Type de document : |
texte imprimé |
| Auteurs : |
Ziling Zhao, Auteur ; Haojie Qin, Auteur ; Pei Mao, Auteur ; Shixing Gong, Auteur ; Xiaojun Shen, Auteur |
| Année de publication : |
2023 |
| Article en page(s) : |
p. 55-59 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
12-hydroxystearate diethanolamine
Acylation
Ammonolyse
Caractérisation
Chimie analytique
Composés organiques -- Synthèse
Fourier, Spectroscopie infrarouge à transformée de
Produits de nourriture du cuir
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
12-hydroxystearate diethanolamine, an intermediate for a leather fatliquoring agent, was prepared by two-step synthesis of amidation reaction and ammonolysis reaction through vacuum distillation dehydration, using 12-hydroxystearic acid and diethanolamine as raw materials. Through single factor experiments, the optimised synthesis conditions were determined as follows: the molar ratio of 12-hydroxystearic acid to diethanolamine was 1:1.03, and the temperature of the first amidation reaction was 135°C and the reaction time was 4 hours. In the second step of ammonolysis reaction, the reaction temperature was 70°C, the amount of sodium ethylate (sodium ethoxide) used as catalyst was 1.5% of the mass of 12-hydroxystearic acid, and the reaction time was 2 hours. Under the optimised conditions, the yield of the product could reach 90.9%. The structures of 12-hydroxystearate diethanolamide were characterised by FTIR spectrum. |
| Note de contenu : |
- MATERIALS AND METHODS : Materials - Experimental methods - Analytical methods
- RESULTS AND DISCUSSION : Acylation reaction - Ammonolysis reaction - FTIR analysis
- Table 1 : Effect of first step reaction temperature on the ratio of products |
| En ligne : |
https://drive.google.com/file/d/1UNNfqZm_-rhgnyO37uoBvTtJzFeyrL8P/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39064 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 107, N° 2 (03-04/2023) . - p. 55-59
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