Patent ID: 8486877

Claim:
An alkylated hydroxyaromatic compound prepared by a process comprising: reacting at least one hydroxyaromatic compound with at least one branched olefinic propylene oligomer having from about 20 to about 80 carbon atoms in the presence of an acid catalyst, wherein the at least one branched olefinic propylene oligomer has less than about 1 wt. % of vinylidene content, to provide an alkylated hydroxyaromatic compound. wherein the benzylic carbon attached to the hydroxyaromatic ring is substituted with one group being methyl or a branched alkyl group of 3 to 5 carbon atoms, a second group being a branched alkyl group of at least about 18 carbon atoms having an average of one branch every 2 carbon atoms wherein each branch contains 1 to 2 carbon atoms, and a third group being a linear alkyl group of 1 to 5 carbon atoms, with the proviso that the carbon group directly attached to the benzylic carbon of each of the first and second groups is not a CH 2 group.