Synthetic polyolefin lubricant blends having high viscosity indices

摘要

Compositions and methods of preparation for a lubricant mixture having enhanced viscosity index comprising: (a) a low viscosity C20-C60 lubricant range liquid comprising substantially linear hydrocarbons prepared by shape selective catalysis of lower olefin with medium pore acid zeolite catalyst to provide substantially linear liquid olefinic intermediates or C20+ hydrogenated lubricants, said lubricant range liquid having a kinematic viscosity of about 2-10 cS at 100 DEG C.; and (b) at least one poly(alpha-olefin) having viscosity greater than 20 cS and viscosity index improvement properties.