%0 Journal Article
%T Hydroxamic acid surface active agents
%A Ahmed
%A M. H.M.
%A Mahmoud
%A A. A.
%A El-Sawy
%A A. A.
%J Grasas y Aceites
%D 2001
%I Consejo Superior de Investigaciones Cient¨ªficas
%X p-Hydroxy phenyloctadecanol and p-hydroxy phenyloctadecanoic acid were used as new precursors for the preparation of surface active hydroxamic acid including different moles of propylene oxide. The hydroxamic acid was prepared by the reaction of propenoxylated products with sodium chloroacetate, followed by methyl esterification and the resultant product reacted with hydroxyl amine hydrochloride to give the hydroxamic acid. The structures of prepared hydroxamic acid were confirmed by spectroscopic study. The surface activity of prepared hydroxamic acid was studied; the results revealed that, the prepared hydroxamic acid has pronounced surface activity, the alcohol substrate shows a surface activity superior than the acid substrate. Se han utilizado el p-hidroxifeniloctadecanol y el ¨¢cido p-hidroxifeniloctadecanoico como nuevos precursores para la preparaci¨®n de tensioactivos derivados del ¨¢cido hidrox¨¢mico, que incluyen diferentes moles de ¨®xido de propileno. El ¨¢cido hidrox¨¢mico se prepar¨® por reacci¨®n de los productos propenoxilados con cloroacetato s¨®dico, seguido de la formaci¨®n de ¨¦steres met¨ªlicos, y los productos resultantes se hicieron reaccionar con clorhidrato de hidroxilamina para dar los derivados del ¨¢cido hidrox¨¢mico. Las estructuras de los derivados preparados del ¨¢cido hidrox¨¢mico, se confirmaron por t¨¦cnicas espectrosc¨®picas, estudi¨¢ndose su actividad superficial cuyos resultados mostraron que dichos compuestos ten¨ªan un alto valor. La actividad superficial del sustrato alcoh¨®lico fue mayor que la del sustrato ¨¢cido.
%K Hydroxamic acid
%K p-Hydroxy phenyloctadecanol
%K p-hydroxy phenyloctadecanoic acid
%K Surface activity
%K ¨¢cido hidrox¨¢mico
%K ¨¢cido p-hidroxifeniloctadecanoico
%K Actividad superficial
%K p-hidroxifeniloctadecanol
%U http://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/368/371