Patent ID: 6872692

Claim:
A lubricant base stock comprising: co-oligomers of an alpha olefin or mixture of alpha olefins and a olefinic substituted aromatic compound, the co-oligomers formed by co-oligomerizing in the presence of a Friedel-Crafts catalyst from about 1 to about 80 wt % of an olefinic substituted aromatic compound having the formula where R 1 , R 2 , R 3 and R 4 are independently H or a C 1 to C 4 alkyl group, and from 99 to about 20 wt % of an alpha olefin of from 6 to about 12 carbon atoms or a mixture of alpha olefin of from 6 to about 20 carbon atoms with at least 50% having less than 12 carbon atoms, the co-oligomerization being conducted at a temperature and under conditions selected from the group consisting of: (a) continuously feeding the reactants into a reaction zone under steady state conditions with average residence time of olefin or mixture of olefin, olefinic substituted aromatic compound and catalyst in the range of from about 0.1 to about 10 hours; and (b) by introducing the olefin or mixture of olefins, olefinic substituted aromatic compound and catalyst substantially simultaneously into a reaction zone over an extended time period whereby substantially random co-oligomers are found.