| 摘要 |
<p>PURPOSE:To provide the titled lubricating oil composition which is highly resistant to emulsification and reluctant to form emulsion sludge, prepared by adding a specified oxygen-containing compd. to a base oil for lubricating oil. CONSTITUTION:0.005-25pts.wt. at least one oxygen-containing compd. selected from among polyethylene glycol monoalkyl (aryl) ether, polyoxyethylene/polyoxypropylene block copolymer, polyoxyalkylene adduct of alkylenediamine with an average molecular weight of 1,500-6,000, sorbitan alkyl ester and polyoxyethylene sorbitan alkyl ester and less than 5pts.wt. additive such as antioxidant, metal inactivator, rust inhibitor and defoamer, are added to 100pts.wt. base oil for lubricating oil having a viscosity of 20-100cSt at 40 deg.C.</p> |
