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China Surfactant Detergent & Cosmetics ›› 2016, Vol. 46 ›› Issue (6): 314-319.doi: 10.13218/j.cnki.csdc.2016.06.003

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Optimization of synthesis of imidazoline sulfate salt by response surface method and study of its performance

GUO Rui,CHENG Min,YANG Jiang-yue,LI Huan-le,LIU Ai-yu   

  1. Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry of the Ministry of Education, Shaanxi University of Science and Technology,Xi'an,Shaanxi 710021,China
  • Published:2016-06-22

Abstract: Under the catalysis of urea,a kind of imidazoline sulfate salt was synthesized with amino sulfonic acid as the sulfating reagent,lauric acid and N-hydroxyethyl-ethylenediamine as starting materials.The chemical structure of the target product was characterized by IR and 1H NMR.Based upon results obtained from single factor experiments and in combination with response surface method,the optimal synthesis conditions were determined as:n(imidazoline)∶n(amino sulfonic acid)=1∶1.09;reaction temperature,107 ℃;reaction time,3.7 h;dosage of the catalyst,2.93% of the total mass of the reactants.Under the above-mentioned conditions,the reaction yield achieves 75.20%.Surface activity and foaming performance of the product were measured.The results showed that imidazoline sulfate salt displays good surface activity and foaming performance.

Key words: imidazoline sulfate salt, surface activity, response surface method

CLC Number: 

  • TQ423.3