| 摘要 |
The invention relates to a multifunctional additive and a process for preparing the same. According to the invention, the additive comprises 30 ... 46 % zinc dialkyl dithiophosphate diluted in oil ; 1, 2, 3, 45 ... 60 % sulphurized isobutene 8 ... 16 % dodecyl succinic acid semiester with 1,2-propylene glycol diluted 1 : 1 in mineral oil having a viscosity of at least 12 cSt at a temperature of 40 degree C and 0.05 ... 0.06 % antifoaming siliconic polymers, the product having a content of at least 15 % sulphur, at least 1.5 % zinc and at least 1.5 %phosphorus, the percentage being expressed by weight. The claimed multifunctional additive is incorporated in different proportions in the formulation of hydraulic oils, oils for industrial gears and grease oils.
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