Patent ID: 8580717

Claim:
A process for preparing an overbased, sulfurized salt of at least one alkylated hydroxyaromatic compound, the process comprising: (a) alkylating at least one hydroxyaromatic compound with at least one isomerized olefin having from about 15 to about 99 wt % branching obtained by isomerizing at least one normal alpha olefin having from about 10 to about 40 carbon atoms, to provide at least one alkylated hydroxyaromatic compound; (b) neutralizing and sulfurizing the alkylated hydroxyaromatic compound in any order to provide at least one neutralized, sulfurized alkylated hydroxyaromatic compound; and (c) overbasing the at least one neutralized, sulfurized alkylated hydroxyaromatic compound; wherein the hydroxyaromatic compound is a phenol, cresol, xylenol, or a mixture thereof.