发明名称 |
HIGH PERFORMANCE ENGINE OIL |
摘要 |
High performance engine oils and other liquid lubricants comprise a liquid lubricant basestock of low viscosity from 1.5 to 12 cSt (110C) with two dissolved polymer components of differing molecular weights. The basestock i s 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 o r all of its thickening power. The use of the highly viscoelastic low molecula r 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 grading s of 0W20, 0W30, 0W40 or even more widely cross graded, for example 0W70 or higher may be achieved.
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申请公布号 |
CA2368221(A1) |
申请公布日期 |
2000.10.05 |
申请号 |
CA20002368221 |
申请日期 |
2000.02.15 |
申请人 |
MOBIL OIL CORPORATION |
发明人 |
MAXWELL, WILLIAM L.;BAILLARGEON, DAVID J.;BERGSTRA, RAYMOND J.;JACKSON, ANDREW;PACHE, ROBERT A.;JOHNSTON, G. JAMES |
分类号 |
C10M105/06;C10M105/32;C10M107/02;C10M111/04;C10M143/00;C10M143/10;C10M143/12;C10M145/14;C10M169/04;C10N20/00;C10N20/02;C10N20/04;C10N30/02;C10N30/06;C10N30/08;C10N40/25;(IPC1-7):C10M105/00;C10M107/12;C10M107/20;C10M105/38 |
主分类号 |
C10M105/06 |
代理机构 |
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代理人 |
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地址 |
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