Synthesis of 2,2,4-Trimethyl-1,3-Pentanediol Monoisobutyrate

Abstract:

2,2,4-trimethyl-1,3-pentanediol monoisobutyrate (CS-12) is a non-water-soluble diol ester and an emerging green additive, widely used in paint industry. It can be synthesized by isobutyraldehyde with alkali as catalyst. In this article, several catalysts were studied for the synthesis of CS-12, for example, sodium hydroxide, calcium hydroxide, the mixture of sodium hydroxide and calcium hydroxide, sodium methoxide, the solution of sodium methoxide and methanol, and sodium ethoxide. Sodium hydroxide was finally selected as the optimal catalyst for the reaction. The effect of the amount of catalyst, reaction temperature and reaction time on the reaction were investigated by orthogonal experiments. The final optimal conditions are as follows: the catalyst dosage is 2 %, the reaction temperature is 50 °C, the reaction time is 4h. Under these conditions, the conversion of isobutyraldehyde is 93.10%, the selectivity of target product is 92.98%.

• Periodical: Advanced Materials Research (Volumes 1033-1034)
• Pages: 76-80
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1033-1034.76
• Online since: October 2014
• Authors: Xiang Jing Zhang*, Peng Tao Wu, Zi Chao Jiang, Ting Ting Liu, Xiao Yang Gao, Ren Juan Ma, Yong Qi Hu
• Keywords: 2,2,4-Trimethyl-1,3-Pentanediol Monoisobutyrate (CS-12), Catalyst, Isobutyraldehyde, Orthogonal Experiment

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