Synthesis of the Water-Soluble Imidazolinylquaternary-Ammonium-Salt Corrosion Inhibitor
ZHANG Shi-qiao~1,LI Xiao-ou~2,LIU Jie~2,LI Dong-sheng~2,JIN Shan~1(1.College of Chemistry and Materials Science,Liaoning University of Petroleum & Chemical Technology,Fushun 113001,Liaoning Province,China;2.College of Petrochemical Technology,Liaoning University of Petroleum & Chemical Technology,Fushun 113001,Liaoning Province,China)
(1.College of Chemistry and Materials Science,Liaoning University of Petroleum & Chemical Technology,Fushun 113001,Liaoning Province,China;2.College of Petrochemical Technology,Liaoning University of Petroleum & Chemical Technology,Fushun 113001,Liaoning Province,China
Abstract��
An oil-soluble intermediate of cycloalkyl imidazoline was prepared by the condensation of naphthenic acid with polyethylene polyamine catalyzed by boric acid.Then it was transformed into water-soluble corrosion inhibitor of cycloalkyl imidazoline-quaternary-ammonium-salt by reaction with dimethyl sulfate.Some factors,such as the mole ratio of polyethylene polyamine to naphthenic acid,reaction time,and the quantity of solvent affecting the anti-corrosive capacity of the inhibitor,were discussed by orthogonal experiment,and the reasonable data fitting formula was obtained.The calculated values agreed well with the experimental values.The optimum operation conditions of synthesizing experiment is:the mole ratio of polyethylene polyamine to naphthenic acid is 0.573,the reflux time is 8 h,the quantity of solvent is 20%(mass fraction).The verified experiments showed that the products had better water-solubility,and the corrosion inhibition efficiency was over 80%.
ZHANG Shi-qiao~1,LI Xiao-ou~2,LIU Jie~2,LI Dong-sheng~2,JIN Shan~1.Synthesis of the Water-Soluble Imidazolinylquaternary-Ammonium-Salt Corrosion Inhibitor[J]. Chemcial Industry and Engineering, 2009,26(2): 144-146
2009, Vol. 26 
