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2. 发明申请

WO1995024458A1 VISCOSITY INDEX IMPROVER AND LUBRICATING OIL 审中-公开
标题翻译：粘度指数改进和润滑油
公开(公告)号：WO1995024458A1
公开(公告)日：1995-09-14
申请号：PCT/JP1995000309
申请日：1995-02-28
申请人： SANYO CHEMICAL INDUSTRIES, LTD. , SAKAI, Kouzou , MATSUYA, Hidehiko , OHTA, Yoshihisa
发明人： SANYO CHEMICAL INDUSTRIES, LTD.
IPC分类号： C10M145/14
CPC分类号： C10M145/14 , C10M2209/084 , F02B1/04
摘要： A viscosity index improver comprising a polymer containing at least 70 wt.% of an alkyl (meth)acrylate monomer (the alkyl group bearing ten or less carbon atoms) as the constituent unit; and a lubricating oil prepared by adding the improver to a lube base oil selected from the group consisting of mineral oil, MLDW oil, high-viscosity-index mineral oil containing isomeric paraffin, hydrocarbon-base synthetic lubricating oil, ester-base synthetic lubricating oil, and mixtures of at least two of them. As compared with conventional polymethacrylate-base viscosity index improvers, the invention improver is excellent in low-temperature viscosity characteristics and oxidation resistance. Especially when used for producing a high-viscosity-index oil, it can provide a significantly low viscosity at -40 DEG C. When used in combination with a molybdenum-base friction/wear inhibitor, it can provide a low coefficient of friction even when it undergoes oxidative deterioration. Therefore, a lubricating oil containing this improver has excellent low-temperature flow characteristics and high-temperature oxidation stability, can be used even in severe surroundings, and improves fuel consumption.
摘要翻译：一种粘度指数改进剂，其包含含有至少70重量％的（甲基）丙烯酸烷基酯单体（具有十个以下碳原子的烷基）作为构成单元的聚合物; 将润滑油添加到润滑油基础油中，所述润滑油选自矿物油，MLDW油，含有异构链烷烃的高粘度指数矿物油，烃类合成润滑油，酯基合成润滑油，以及它们中至少两个的混合物。与传统的聚甲基丙烯酸酯 - 粘度指数改进剂相比，本发明的改进剂具有优异的低温粘度特性和抗氧化性。特别是当用于生产高粘度指数油时，它可以在-40℃下提供显着的低粘度。当与钼基摩擦/耐磨抑制剂组合使用时，即使当它经历氧化变质。因此，含有这种改进剂的润滑油具有优异的低温流动特性和高温氧化稳定性，即使在恶劣的环境中也可以使用，并且可以提高燃料消耗。

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