The influence of acid binding agent on synthetic antioxidant 3052

化学工业与工程

Chemcial Industry and Engineering

2023, Vol. 40

Issue (2) :41-46 DOI: 10.13353/j.issn.1004.9533.20210833

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The influence of acid binding agent on synthetic antioxidant 3052

CHEN Dongli¹, YANG Jun², LIU Changqing², HAN Xiaoping², SONG Jian¹

1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China;
2. Research Institute of PetroChina Jilin Petrochemical Company, Jilin Jilin 132022, China

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Abstract The acid binding agent used in the synthesis of 2-(2-hydroxy-3-tert-butyl-5-methylbenzyl)-4-methyl-6-tert-butylphenyl acrylate (antioxidant 3052) in most literature is triethylamine, but when triethylamine is used as an acid binding agent, it may complex with and deactivate acryloyl chloride, and its strong alkalinity also leads to further esterification reaction and formation of by-products such as acrylate diesters. By screening different acid binding agents and optimizing the experimental conditions, the results show that the combination of pyridine, Na₂CO₃ and triethylamine as a mixed acid binding agent greatly reduces the generation of by-products, and the selectivity of raw materials is all above 97%, the yield can reach 80%. The synthetic 3052 sample is added to the production of ABS resin, and the color difference value ΔE is less than 2.0, which meets the qualified industrial standard.

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	CHEN Dongli
	YANG Jun
	LIU Changqing
	HAN Xiaoping
	SONG Jian

Keywords： acid binding agent antioxidant 3052 diisopropylethylamine Na₂CO₃ triethylamine

Received 2021-10-19;

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CHEN Dongli, YANG Jun, LIU Changqing, HAN Xiaoping, SONG Jian.The influence of acid binding agent on synthetic antioxidant 3052[J] Chemcial Industry and Engineering, 2023,V40(2): 41-46

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