Process for preparing a pour point depressing lubricant base oil component from waste plastic and use thereof

A method for improving the lubricating properties of a lubricant base oil, comprising the steps of:

• (a) determining a target pour point of a lubricant base oil blend, wherein the lubricant base oil blend comprises the lubricant base oil and a pour point depressing lubricant base oil blending component;
• (b) isomerization dewaxing a pyrolyzed plastics feed by contacting at least a portion of the pyrolyzed plastics feed with an isomerization dewaxing catalyst in a catalytic isomerization dewaxing zone to provide an isomerization dewaxing effluent comprising the pour point depressing lubricant base oil blending component, wherein the pyrolyzed plastics feed originates from a plastics feed comprising polyethylene that has been pyrolyzed, and wherein the pour point depressing lubricant base oil blending component comprises a pour point higher than the target pour point;
• (c) recovering the pour point depressing lubricant base oil blending component boiling in the range of about 900° F. to about 1100° F. and having a pour point in the range of about −15° C. to about 0° C.;
• and
• (d) blending the pour point depressing lubricant base oil blending component with the lubricant base oil in the proper proportion to produce the lubricant base oil blend having the target pour point, wherein the target pour point is lower than the pour point of the lubricant base oil.