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Research on two-step synthesis method of 12-hydroxystearate diethanolamide / Ziling Zhao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 107, N° 2 (03-04/2023)
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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 cuirIndex. 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 productsEn ligne : https://drive.google.com/file/d/1UNNfqZm_-rhgnyO37uoBvTtJzFeyrL8P/view?usp=drive [...] Format de la ressource électronique : 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[article]Réservation
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