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Title: Effectiveness of bis(2-methylpiperazine dithiocarbamato) Cu(II) and Zn(II), bis(diethyldithiophosphato) Ni(II) and its -picoline diadduct and bis(pyrrolidine dithiocarbamato) Cu(II) as antioxidant lubricating oil additives
Authors: Gogoi, Pradip K
Sonowal, Juthika
Keywords: 2-methylpiperazine dithiocarbamates
pyrrolidine dithiocarbamate
oil additive
Issue Date: Jan-2005
Publisher: CSIR
IPC CodeC10M 125/06
Abstract: Effectiveness of 2-methylpiperazinedithiocarbamato(2-Mepipzdtc) complexes of Cu(II) and Zn(II), diethyldithiophosphato (Et2dtp) complex of Ni(II) and its -picoline diadduct, and pyrrolidine dithiocarbamato complex of Cu(II) are evaluated as antioxidant lubricating oil additives by measurement of viscosity, acid number, IR spectral and thermal studies. All the complexes at 0.25 and 0.5 wt% show antioxidant property. Zn(2-Mepipzdtc)2 as well as Ni(Et2dtp)2(-pic)2 were found to be most effective antioxidants among these compounds. The antioxidant behaviour has been explained on the basis of hydroperoxide decomposition and radical scavenger mechanism.
Page(s): 50-54
ISSN: 0975-0991 (Online); 0971-457X (Print)
Source:IJCT Vol.12(1) [January 2005]

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