Preparation of 3-alkoxy-2-hydroxypropyl ester of 2-ethylhexanoic acid and its application in polymer latexes and coatings / Zou Xinru in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 4 (07/2023)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 4 (07/2023) . - p. 1269-1283 Titre : Preparation of 3-alkoxy-2-hydroxypropyl ester of 2-ethylhexanoic acid and its application in polymer latexes and coatings Type de document : texte imprimé Auteurs : Zou Xinru, Auteur ; Yi-en Yuan, Auteur ; Yong-xin Ji, Auteur Année de publication : 2023 Article en page(s) : p. 1269-1283 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Auxiliaire de coalescence Caractérisation Coalescence (Sciences physiques) Composés organiques -- Synthèse Esterification Latex Revêtement mural Revêtements -- Additifs Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : In recent years, most of the coalescing aids commonly used in the market contain volatile organic compounds (VOCs) with low boiling point. Herein, we designed and prepared a novel environmentally friendly coalescing aid, 2-ethylhexanoic acid-3-alkoxy-2-hydroxypropyl ester. Under the action of a catalyst, 2-ethylhexanoic acid and alkyl glycidyl ether were used as raw materials for ring-opening esterification reaction, and 2-ethylhexanoic acid-3-alkoxy-2-hydroxypropyl ester was finally generated. We conducted a single-factor experiment and orthogonal experiment L9(34) to explore the optimal reaction conditions. The structure of the product was characterized by 1HNMR and FTIR. The boiling point of the product was determined to be 270–283°C, which was in line with the requirements of the national environmental protection regulations for VOCs. Compared with traditional coalescing aids, the product has low volatility, is not classified as a VOC and is safe and environmentally friendly. The properties of the product were characterized, and the applications of the product in polymer latex and coating were determined. We measured the minimum film-forming temperature (MFFT), atomic force microscopy (AFM), water absorption, scrub resistance, adhesion, color difference, and other properties of the film. The results show that the performance of the new coalescing aid is superior to Texanol (2,2,4-trimethyl-1,3-pentanediol monoisobutyrate), which is commonly used in the market, and it has obvious advantages. Note de contenu : - EXPERIMENTAL SECTION : - Materials - Instruments - Synthetic route to IE-3 and IE-4 - Synthesis of IE-3 and IE-4 - Gas chromatography analysis - Characterization of product - Evaluation of the effect of IE-3 and IE-4 in polymer latex - Evaluation of the effect of IE-3 and IE-4 in coatings - RESULTS AND DISCUSSION : - Selection of reaction conditions - Characterizations of product - Evaluation of the effect of IE-3 and IE-4 in polymer latex - Evaluation of the effect of IE-3 and IE-4 in coatings - Table 1 : Composition of polymer latex - Table 2 : Composition of exterior wall coating - Table 3 : Composition of interior wall coating - Table 4 : Orthogonal experimental factors and level table - Table 5 : Orthogonal experimental program and results - Table 6 : Boiling point range of two coalescing aids - Table 7 : VOC content of interior wall coating and exterior wall coating that was added with coalescing aid - Table 8 : Color difference of interior wall coating added with different coalescing aids - Table 9 : Color difference of exterior wall coating added with different coalescing aids DOI : https://doi.org/10.1007/s11998-023-00741-8 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00741-8.pdf?pdf=button% [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39715 [article]

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