Hydrocarbyl ethers of sulfur-containing hydroxyl derived aromatics as synthetic lubricant base stocks

The composition as recited in claim I where R and R.sub.1 are C.sub.4 to C.sub.8 hydrocarbyl that are at least 40% branched.

A process of preparing a liquid hydrocarbon or hydrocarbyl fuel additive comprising hydrocarbyl ethers of sulfur-containing hydroxyl-derived aromatic reaction products prepared as described below:

• ##STR3## that contain R and R.sub.1 substituent groups only where R, R.sub.1 are hydrogen or C.sub.1 to C.sub.30 hydrocarbyl that are the same or different, straight chain or branched and which optionally contain at least one heteroatom selected from a member of the group consisting of sulfur, nitrogen or oxygen and mixtures thereof, R and R.sub.1 can be the same or different, where at least one of R and R.sub.1 must be hydrocarbyl;
• X=Cl, Br, I;
• and y=1-3, and wherein the reaction is carried out at temperatures varying from ambient to about 250.degree. C. under pressures varying from ambient to about 1,000 psig or is autogenous for a time sufficient to obtain the desired additive product of reaction and wherein the molar ratios of reactants vary from equimolar to more than molar to less than molar.

A method for improving the catalytic thermal/oxidative stabilities, antiwear, and load carrying properties of a liquid hydrocarbon or hydrocarbyl fuel which comprises adding to said fuel an additive amount of hydrocarbyl ethers of sulfur-containing hydroxyl-derived aromatic reaction products prepared as described below:

• ##STR4## that contain R and R.sub.1 substituent groups only where R, R.sub.1 are hydrogen or C.sub.1 to C.sub.30 hydrocarbyl that are the same or different, straight chain or branched and which optionally contain at least one heteroatom selected from a member of the group consisting of sulfur, nitrogen or oxygen and mixtures thereof, R and R.sub.1 can be the same or different, where at least one of R and R.sub.1 must be hydrocarbyl;
• X=Cl, Br, I;
• and y=1-3, and wherein the reaction is carried out at temperatures varying from ambient to about 1,000 psig or is autogenous for a time sufficient to obtain the desired additive product of reaction and wherein the molar ratios of reactants vary from equimolar to more than molar to less than molar.

A fuel composition comprising a major amount of a liquid hydrocarbon or hydrocarbyl fuel and a minor amount of a liquid additive product of reaction having improved catalytic thermal/oxidative stabilities, concomitantly with improved antiwear and load-carrying properties comprising R and R.sub.1 only substituent group hydrocarbyl ethers of sulfur-containing hydroxyl-derived aromatic reaction products where R and R.sub.1 are hydrogen or C.sub.1 to C.sub.30 hydrocarbyl which are the same or different, that are straight chain or branched where at least 40% are branched and which optionally contain at least one heteroatom selected from a member of the group consisting of sulfur, nitrogen or oxygen.