公开(公告)号：EP1661921A1

公开(公告)日：2006-05-31

申请号：EP05025767.4

申请日：2005-11-25

申请人： Mitsui Chemicals, Inc.

发明人： Iimura, Yuriko ,  Hirano, Hideki ,  Tohi, Yasushi ,  Urakawa, Naomi

IPC分类号： C08F10/14 ,  C10M107/10 ,  C10M111/04 ,  C10M169/04 ,  C10N20/02 ,  C10N20/04 ,  C10N30/02 ,  C10N30/10 ,  C10N40/08 ,  C10N40/04 ,  C10N40/25

CPC分类号： C10M169/04 ,  C08F110/14 ,  C08F210/14 ,  C10M107/10 ,  C10M111/04 ,  C10M2203/1006 ,  C10M2205/0225 ,  C10M2205/0285 ,  C10M2207/2805 ,  C10M2207/2825 ,  C10N2220/021 ,  C10N2220/022 ,  C10N2230/02 ,  C10N2230/06 ,  C10N2230/10 ,  C10N2230/68 ,  C10N2240/04 ,  C10N2240/042 ,  C10N2240/044 ,  C10N2240/045 ,  C10N2240/046 ,  C10N2240/08 ,  C10N2240/10 ,  C08F2500/02 ,  C08F2500/03 ,  C08F2500/17 ,  C08F210/16

摘要： Disclosed is a synthetic lubricating oil comprising an α-olefin (co)polymer defined by the following features (i) to (v):

(i) said (co)polymer contains constituent units derived from (a) at least one monomer selected from α-olefins of 8 to 20 carbon atoms in amounts of 90 to 100% by mol and contains constituent units derived from (b) ethylene in amounts of 0 to 10% by mol,
(ii) the dynamic viscosity at 100°C is in the range of 8 to 500 mm 2 /s,
(iii) the number-average molecular weight (Mn), as measured by gel permeation chromatography, is in the range of 500 to 15,000,
(iv) said (co)polymer satisfies the following formulas (I) and (II):

         A ≤ 24.0×Exp(-0.0239×K)     (I)

         B ≤ 0.0775×K     (II)

wherein A is a content (%) of a (co)polymer having a molecular weight, as measured by gel permeation chromatography, of not more than 1,000, B is a content (%) of a (co)polymer having a molecular weight of not less than 20,000, and K is a dynamic viscosity (mm 2 /s) at 100°C, and
(v) the molecular weight distribution (Mw/Mn) is in the range of 1.1 to 1.8.

Also disclosed is a lubricating oil composition comprising the above-mentioned synthetic lubricating oil and a low-viscosity base oil. The synthetic lubricating oil and the lubricating oil composition have high thermal oxidation stability and are excellent in viscosity index, low-temperature viscosity properties and shear stability.

摘要翻译： 公开了包含由以下特征（i）至（v）定义的± - 烯烃（共）聚合物的合成润滑油：（i）所述（共）聚合物含有由（a）至少一种选自 8〜20个碳原子的α-烯烃，其含量为90〜100摩尔％，含有（b）乙烯的结构单元为0〜10摩尔％，（ii）100℃下的动态粘度为 8〜500mm 2 / s的范围，（iii）通过凝胶渗透色谱法测定的数均分子量（Mn）在500〜15000的范围内，（iv）所述（共）聚合物满足 以下公式（I）和（II）：€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ‰¤24.0×Exp（-0.0239×K）€ƒ€ƒ€ƒ€ƒ ）ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ‰¤0.0775×K€ƒ€ƒ€ƒ（II）其中A是（共）聚合物的含量（％） 通过凝胶渗透色谱法测定的分子量不大于1,000，B是a的含量（％） （共）聚合物，K为100℃下的动态粘度（mm 2 / s），（v）分子量分布（Mw / Mn）为1.1 到1.8。 还公开了包含上述合成润滑油和低粘度基础油的润滑油组合物。 合成润滑油和润滑油组合物具有高热氧化稳定性，粘度指数，低温粘度特性和剪切稳定性优异。

公开(公告)号：EP1661921B1

公开(公告)日：2019-07-17

申请号：EP05025767.4

申请日：2005-11-25

申请人： Mitsui Chemicals, Inc.

发明人： Iimura, Yuriko ,  Hirano, Hideki ,  Tohi, Yasushi ,  Urakawa, Naomi

IPC分类号： C08F10/14 ,  C10M107/10 ,  C10M111/04 ,  C10M169/04 ,  C10N20/02 ,  C10N20/04 ,  C10N30/02 ,  C10N30/10 ,  C10N40/08 ,  C10N40/04 ,  C10N40/25