Process for making a lubricating composition

A process for making a high VI lubricating oil composition comprising the steps of:

• (a) passing a waste plastics feed comprising polyethylene to a pyrolysis zone having a temperature of from about 600° C. to about 700° C. and pressure not greater than about 0.75 atm., whereby at least a portion of said waste plastics feed is cracked, thereby forming a pyrolysis zone effluent comprising 1-olefins and n-paraffins;
• (b) passing said pyrolysis zone effluent, to a separations zone, thereby separating said pyrolysis zone effluent into at least one heavy fraction and one middle fraction, said middle fraction comprising 1-olefins;
• (c) passing said pyrolysis effluent middle fraction to a dimerization zone, where said pyrolysis effluent middle fraction is contacted with a dimerization catalyst at dimerization conditions, wherein at least a portion of said pyrolysis effluent middle fraction is dimerized;
• (d) passing at least a portion of said dimerized pyrolysis effluent middle fraction to a catalytic hydrotreating zone wherein at least a portion of said dimerized pyrolysis effluent middle fraction is contacted with a hydrotreating catalyst at hydrotreating conditions, thereby producing a hydrotreated dimerized pyrolysis effluent middle fraction;
• (e) passing at least a portion of said hydrotreated dimerized pyrolysis effluent middle fraction to a catalytic isomerization dewaxing zone, wherein at least a portion of said hydrotreated dimerized pyrolysis effluent middle fraction is contacted with a isomerization dewaxing catalyst comprising an intermediate pore size molecular sieve selected from the group consisting of ZSM-22, ZSM-23, SSZ-32, ZSM-35, SAPO-11, SM-3, and mixtures thereof, at isomerization dewaxing conditions, wherein at least a portion of said hydrotreated dimerized pyrolysis effluent middle fraction is converted to a high VI lubricating oil composition;
• (f) wherein said high VI lubricating oil composition comprises a lube fraction having a kinematic viscosity at 100° C. of at least about 8 cSt;
• (g) passing at least a portion of said pyrolysis effluent heavy fraction to said catalytic hydrotreating zone wherein at least a portion of said pyrolysis effluent heavy fraction is contacted with said hydrotreating catalyst at hydrotreating conditions, thereby producing a hydrotreated pyrolysis effluent heavy fraction;
• (h) passing at least a portion of said hydrotreated pyrolysis effluent heavy fraction to said catalytic isomerization dewaxing zone, wherein at least a portion of said hydrotreated pyrolysis effluent heavy fraction is contacted with said isomerization dewaxing catalyst at isomerization dewaxing conditions, wherein at least a portion of said hydrotreated dimerized pyrolysis effluent heavy fraction is converted to a second high VI lubricating oil composition;
• and
• (i) wherein said second high VI lubricating oil composition comprises a lube fraction having a kinematic viscosity at 100° C. of at least about 8 cSt.