Studies on 1,2-dibutoxycarbonylethyl Diethyldithiocarbamate as Lubricant Additive

1, 2-dibutoxycarbonylethyl diethyldithiocarbamate was synthesized by using two different reaction ways and was characterised by means of elemental analysis, massspectrum and infrared specttum. The compound has been found to solubilize markedly molybdenum N, N-di(2-ethylhexyl)dithiocarbamate (MoDTC) up to 1000 ppm in 500 SN baseoil. Adding 0.6 wt% of the organo-molybdenum additive, which was prepared by mixing BDTC with MoDTC, into 500 SN oil, the four-ball wear scar diameter (D_(30)~(30)) was determined to be 0.33. This organo-molybdenum additive imposes also better mixing compatibility on the detergent-dispersant additives employed in engine oil.