Viscosity index improver and lubricant composition
    5.
    发明专利
    Viscosity index improver and lubricant composition 审中-公开
    粘度指数改进剂和润滑剂组合物

    公开(公告)号:JP2013185006A

    公开(公告)日:2013-09-19

    申请号:JP2012049472

    申请日:2012-03-06

    Inventor: TATSUMI TAKENORI

    Abstract: PROBLEM TO BE SOLVED: To provide a viscosity index improver, which is high in viscosity index improving effect, and hardly raises the low-temperature viscosity of a lubricant composition.SOLUTION: A viscosity index improver contains a (co)polymer (A) including a monomer (a) represented by general formula (1) as an essential component monomer and having a solubility parameter of 8.5-9.5; and a (co)polymer (B) including a monomer (b) represented by general formula (2) and/or a monomer (c) represented by general formula (3) as essential component monomers, and having a solubility parameter of 8.5-9.5.

    Abstract translation: 要解决的问题:提供一种粘度指数提高效果高的粘度指数改进剂,并且难以提高润滑剂组合物的低温粘度。粘度指数改进剂含有(共)聚合物(A),其包含 由通式(1)表示的单体(a)作为必要成分单体,溶解度参数为8.5-9.5; 和包含由通式(2)表示的单体(b)和/或由通式(3)表示的单体(c))作为主要成分单体的(共)聚合物(B),溶解度参数为8.5- 9.5。

    Lubricating oil composition
    7.
    发明专利
    Lubricating oil composition 审中-公开
    润滑油组成

    公开(公告)号:JP2011021056A

    公开(公告)日:2011-02-03

    申请号:JP2009164767

    申请日:2009-07-13

    Abstract: PROBLEM TO BE SOLVED: To provide a lubricating oil composition whose kinematic viscosity at 40°C, kinematic viscosity at 100°C and HTHS (high-temperature high-shear) viscosity at 100°C are sufficiently low, while maintaining HTHS viscosity at 150°C, and excellent in fuel saving property of a high improvement ratio of friction torque and low temperature viscosity.
    SOLUTION: This lubricating oil composition includes: a lubricating base oil having a kinematic viscosity of 2.0-12 mm
    2 /s at 100°C; and a viscosity index improver having a weight average molecular weight of 5,000-1,000,000 and a viscosity/oil film thickness ratio of ≤0.2, wherein the content of the viscosity index improver is 0.1-50 mass% on the basis of the total amount of the lubricating oil composition.
    COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题:为了提供在40℃下的运动粘度,100℃下的运动粘度和100℃下的HTHS(高温高剪切)粘度的润滑油组合物足够低,同时保持HTHS 在150℃下的粘度,摩擦转矩和低温粘度的高提高比的燃料节省性优异。 解决方案:该润滑油组合物包括:在100℃下运动粘度为2.0-12mm 2 / s的润滑基础油; 和粘度指数改进剂的重量平均分子量为5,000-1,000,000,粘度/油膜厚度比≤0.2的粘度指数改进剂,其中粘度指数改进剂的含量为0.1-50质量% 润滑油组成。 版权所有(C)2011,JPO&INPIT

    Lubricating oil composition
    8.
    发明专利
    Lubricating oil composition 有权
    润滑油组成

    公开(公告)号:JP2010059374A

    公开(公告)日:2010-03-18

    申请号:JP2008229158

    申请日:2008-09-06

    Inventor: UMEMOTO NOBORU

    Abstract: PROBLEM TO BE SOLVED: To provide a lubricating oil composition having excellent metal fatigue life characteristics even in the case of having low viscosity.
    SOLUTION: The lubricating oil composition includes at least a component A and a component B. The component A is a base oil for a lubricating oil. The component B is at least one kind of terminal-modified polydienes included in the base oil for a lubricating oil. The content of the terminal-modified polydienes is 0.1-50 wt.% based on the total weight of the lubricating oil composition. The lubricating oil composition has excellent metal fatigue life characteristics.
    COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题:即使在低粘度的情况下也提供具有优异的金属疲劳寿命特性的润滑油组合物。 解决方案:润滑油组合物至少包含组分A和组分B.组分A是润滑油的基础油。 组分B是包含在用于润滑油的基础油中的至少一种末端改性聚二烯。 末端改性聚二烯的含量相对于润滑油组合物的总重量为0.1-50重量%。 润滑油组合物具有优异的金属疲劳寿命特性。 版权所有(C)2010,JPO&INPIT

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