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公开(公告)号:US06713438B1
公开(公告)日:2004-03-30
申请号:US09275664
申请日:1999-03-24
申请人: David J. Baillargeon , Raymond J. Bergstra , Andrew Jackson , William L. Maxwell , G. James Johnston , Robert A. Pache
发明人: David J. Baillargeon , Raymond J. Bergstra , Andrew Jackson , William L. Maxwell , G. James Johnston , Robert A. Pache
IPC分类号: C10M10500
CPC分类号: C10M111/04 , C10M101/02 , C10M105/06 , C10M105/36 , C10M105/38 , C10M107/02 , C10M143/00 , C10M143/02 , C10M143/08 , C10M143/10 , C10M143/12 , C10M145/14 , C10M169/041 , C10M2203/06 , C10M2203/065 , C10M2203/10 , C10M2203/1006 , C10M2203/102 , C10M2203/1025 , C10M2203/1045 , C10M2203/1065 , C10M2203/1085 , C10M2205/00 , C10M2205/02 , C10M2205/0206 , C10M2205/022 , C10M2205/026 , C10M2205/028 , C10M2205/04 , C10M2205/06 , C10M2207/04 , C10M2207/281 , C10M2207/282 , C10M2207/2825 , C10M2207/283 , C10M2207/2835 , C10M2207/2855 , C10M2207/286 , C10M2207/34 , C10M2209/084 , C10M2219/086 , C10N2220/02 , C10N2240/10 , C10N2240/101 , C10N2240/104 , C10N2240/106
摘要: High performance engine oils and other liquid lubricants comprise a liquid lubricant basestock of low viscosity from 1.5 to 12 cSt (100C) with two dissolved polymer components of differing molecular weights. The basestock is preferably a single PAO or blend of PAOs with a co-basestock component which is preferably an ester or an alkylated aromatic of comparable viscosity. The lower molecular weight polymer is highly viscoelastic in character and is preferably an HVI-PAO; this component in the lubricant which provides unexpectedly high film thickness and unexpectedly good wear protection under conditions where the second, higher molecular weight polymer may lose some or all of its thickening power. The use of the highly viscoelastic low molecular weight polymer in combination with the higher molecular weight thickener enables the production of very widely cross-graded engine oils, especially oils with a low temperature grading of 0W or better. Oils with cross gradings of 0W20, 0W30, 0W40 or even more widely cross graded, for example 0W70 or higher may be achieved.
摘要翻译: 高性能发动机油和其它液体润滑剂包括具有两种不同分子量的溶解的聚合物组分的低粘度的液体润滑剂基础油,其具有1.5至12cSt(100℃)的低粘度。 基础油优选是单一PAO或具有共基础油成分的PAO的共混物,其优选为具有相当粘度的酯或烷基化芳族化合物。 低分子量聚合物的性质是高粘弹性的,优选为HVI-PAO; 润滑剂中的这种组分在第二较高分子量聚合物可能失去其部分或全部增稠力的条件下提供出乎意料的高膜厚度和出人意料的良好的耐磨损保护。 使用高粘弹性低分子量聚合物与较高分子量增稠剂结合使得能够生产非常广泛的交叉级发动机油,特别是低温分级为0W或更好的油。 可以实现具有0W20,0W30,0W40或甚至更广泛交叉分级(例如0W70或更高)的交叉分级的油。