申请人:ETHYL PETROLEUM ADDITIVES LIMITED
公开号:EP0713907A2
公开(公告)日:1996-05-29
Novel zinc additives are provided which function as antioxidants and extreme pressure agents for lubricants and possess high thermal stability. In addition, they exhibit good filterability performance and good corrosion resistance. The zinc-containing additives are formed by admixing (i) at least one zinc dialkyldithiophosphate wherein each alkyl group contains 6 to 12 carbon atoms and is branched on its beta-carbon atom, and (ii) at least one zinc alkanoate wherein each alkanoate group is branched on its beta-carbon atom, in a ratio of 6.0 to 8.0 equivalents of (i) per equivalent of (ii).
新型锌添加剂可用作润滑剂的抗氧化剂和极压剂,并具有较高的热稳定性。此外,它们还具有良好的过滤性和耐腐蚀性。这种含锌添加剂是由以下两种添加剂混合而成:(i) 至少一种二烷基二硫代磷酸锌,其中每个烷基含有 6 至 12 个碳原子,并且在其β-碳原子上有支链;(ii) 至少一种烷酸锌,其中每个烷酸基在其β-碳原子上有支链,混合比例为 6.0 至 8.0 个当量的(i)/当量的(ii)。