| abstract |
PROBLEM TO BE SOLVED: To provide a composition having reduced sulfur content, phosphorus content and especially zinc content for use in lubricants and hydraulic fluids. A composition comprising a reaction product (AT) formed by treating a compound represented by the formula (A) with a compound that reduces the bound sulfur content of (A) and the following (B): Embedded image Wherein, in formula (A), R 1 , R 2 , R 3 and R 4 are independently a hydrocarbyl group, X 1 and X 2 are independently O or S, and n is 0-3; wherein the reaction product has lower copper reactivity than (A); and (B) An acylated nitrogen-containing compound having a substituent of at least 10 aliphatic carbon atoms. |