Preparation of 3-alkoxy-2-hydroxypropyl ester of 2-ethylhexanoic acid and its application in polymer latexes and coatings

IF 2.3 4区 材料科学 Q2 Chemistry Journal of Coatings Technology and Research Pub Date : 2023-02-22 DOI:10.1007/s11998-022-00741-8
Xinru Zou, Yi-en Yuan, Yong-xin Ji
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Abstract

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.

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2-乙基己酸3-烷氧基-2-羟丙酯的制备及其在聚合物乳液和涂料中的应用
近年来,市场上常用的聚结剂大多含有低沸点的挥发性有机化合物。本文设计并制备了一种新型环保型聚结剂-2-乙基己酸-3-烷氧基-2-羟丙基酯。在催化剂的作用下,以2-乙基己酸和烷基缩水甘油醚为原料进行开环酯化反应,最终得到2-乙基己酸-3-烷氧基-2-羟丙基酯。通过单因素实验和正交实验L9(34)探索最佳反应条件。用1HNMR和FTIR对产物的结构进行了表征。经测定,产品沸点为270-283℃,符合国家环保法规对VOCs的要求。与传统的聚结剂相比,该产品挥发性低,不属于VOC,安全环保。对产物的性能进行了表征,确定了产物在聚合物乳胶和涂料中的应用。我们测量了薄膜的最低成膜温度(MFFT)、原子力显微镜(AFM)、吸水性、耐擦洗性、附着力、色差等性能。结果表明,新型聚结剂的性能优于市场上常用的Texanol(2,2,4-三甲基-1,3-戊二醇单异丁酸酯),具有明显的优势。
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来源期刊
Journal of Coatings Technology and Research
Journal of Coatings Technology and Research CHEMISTRY, APPLIED-MATERIALS SCIENCE, COATINGS & FILMS
CiteScore
4.40
自引率
8.70%
发文量
0
期刊介绍: Journal of Coatings Technology and Research (JCTR) is a forum for the exchange of research, experience, knowledge and ideas among those with a professional interest in the science, technology and manufacture of functional, protective and decorative coatings including paints, inks and related coatings and their raw materials, and similar topics.
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