Low viscosity low volatility lubricating oil base stocks and processes for preparing same

A composition comprising one or more glycol ether substituted aryl compounds represented by the formula

• wherein R is a substituted or unsubstituted alkyl group having from 4 to 40 carbon atoms, n is a value from 1 to 12;
• and X is CH2, O, NR′ or S, wherein R′ is hydrogen or an alkyl group having from 1 to 4 carbon atoms;
• wherein said composition has a viscosity (Kv100) from 1 to 10 cSt at 100° C. as determined by ASTM D-445, a viscosity index (VI) from −100 to 300 as determined by ASTM D-2270, and a Noack volatility of no greater than 50 percent as determined by ASTM D-5800;
• wherein said one or more glycol ether substituted aryl compounds are produced by a process comprising reacting a substituted or unsubstituted aryl halide with a substituted or unsubstituted glycol ether, optionally in the presence of a catalyst, under reaction conditions sufficient to produce said one or more glycol ether substituted aryl compounds.

A composition comprising one or more glycol ether substituted aryl compounds represented by the formula

• wherein R is a substituted or unsubstituted alkyl group having from 4 to 40 carbon atoms, n is a value from 1 to 12;
• and X is CH2, O, NR′ or S, wherein R′ is hydrogen or an alkyl group having from 1 to 4 carbon atoms;
• wherein said composition has a viscosity (Kv100) from 1 to 10 cSt at 100° C. as determined by ASTM D-445, a viscosity index (VI) from −100 to 300 as determined by ASTM D-2270, and a Noack volatility of no greater than 50 percent as determined by ASTM D-5800;
• wherein said one or more glycol ether substituted aryl compounds are produced by a process comprising reacting a substituted or unsubstituted aryl alcohol with a substituted or unsubstituted glycol ether halide, optionally in the presence of a catalyst, under reaction conditions sufficient to produce said one or more glycol ether substituted aryl compounds.

A lubricating oil comprising a lubricating oil base stock as a major component, and a glycol ether substituted aryl compound cobase stock as a minor component;

• wherein said glycol ether substituted aryl compound cobase stock comprises one or more compounds represented by the formula
• wherein R is a substituted or unsubstituted alkyl group having from 4 to 40 carbon atoms, n is a value from 1 to 12;
• and X is CH2, O, NR′ or S, wherein R′ is hydrogen or an alkyl group having from 1 to 4 carbon atoms;
• wherein said lubricating oil has a viscosity (Kv100) from 1 to 10 cSt at 100° C. as determined by ASTM D-445, a viscosity index (VI) from −100 to 300 as determined by ASTM D-2270, and a Noack volatility of no greater than 50 percent as determined by ASTM D-5800.

A method for improving one or more of oxidative stability, solubility and dispersancy of polar additives of a lubricating oil by using as the lubricating oil a formulated oil comprising a lubricating oil base stock as a major component, and glycol ether substituted aryl compound cobase stock as a minor component;

• wherein said glycol ether substituted aryl compound cobase stock comprises one or more compounds represented by the formula
• wherein R is a substituted or unsubstituted alkyl group having from 4 to 40 carbon atoms, n is a value from 1 to 12;
• and X is CH2, O, NR′ or S, wherein R′ is hydrogen or an alkyl group having from 1 to 4 carbon atoms;
• wherein said lubricating oil has a viscosity (Kv100) from 1 to 10 cSt at 100° C. as determined by ASTM D-445, a viscosity index (VI) from −100 to 300 as determined by ASTM D-2270, and a Noack volatility of no greater than 50 percent as determined by ASTM D-5800.