| 摘要 |
A composition containing one or more sulfur-containing compounds represented by the formula
(R1)a(X)(R2)b
wherein R1 and R2 are the same or different and are the residue of a heteroatom-containing olefin having from 4 to 40 carbon atoms, X is the residue of a thiol or polythiol, a is a value from 1 to 6, and b is a value from 0 to 6. The composition has a kinematic viscosity at 100° C. (Kv100) from 2 to 300 cst, a kinematic viscosity at 40° C. (Kv40) from 5 to 4000 cst, a viscosity index (VI) from −100 to 300, and a Noack volatility of no greater than 90 percent. A process for producing the composition, a lubricating oil base stock and lubricating oil containing the composition, and a method for improving one or more of solubility and dispersancy of polar additives in a lubricating oil containing the composition. |
| 主权项 |
1. A composition comprising one or more sulfur-containing compounds represented by the formula
(R1)a(X)(R2)b wherein R1 and R2 are the same or different and are the residue of a heteroatom-containing olefin having from 4 to 40 carbon atoms, X is the residue of a thiol or polythiol, a is a value from 1 to 6, and b is a value from 0 to 6; wherein the thiol is selected from the group consisting of an aliphatic thiol, an aromatic thiol, a cycloaliphatic thiol, an ether-, ester- or acid-containing thiol, and a heteroatom-containing thiol, and the polythiol is selected from the group consisting of an aliphatic polythiol, an aromatic polythiol, a cycloaliphatic polythiol, an ether-, ester- or acid-containing polythiol, and a heteroatom-containing polythiol; and wherein the composition has a kinematic viscosity at a temperature of 100° C. (Kv100), measured according to ASTM standard D-445, from 2 to 300 cst, a kinematic viscosity at a temperature of 40° C. (Kv40), measured according to ASTM standard D-445, from 5 to 4000 cst, a viscosity index (VI), measured according to ASTM standard D-2270, from −100 to 300, and a Noack volatility, measured according to ASTM D-5800, of no greater than 90 percent. |
