Process for preparing sulfurized branched alkyl phosphite lubricant additive
申请人:ETHYL PETROLEUM ADDITIVES, INC.
公开号:EP0395258A1
公开(公告)日:1990-10-31
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.