A lubricant additive which provides improved copper corrosion life to lubricants, such as gear oils, is prepared by reacting a sulfurized olefin with a branched chain dialkyl hydrogen phosphite and an amine at a temperature of from 45° to 75°C.
硫化烯烃与支链二烷基
亚磷酸氢酯和胺在 45° 至 75°C 的温度下发生反应,制备出一种润滑油添加剂,可提高齿轮油等润滑油的
铜腐蚀寿命。