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1. 发明授权

US07022766B2 Olefin block copolymer, viscosity index improver for lubricating oils and lubricating oil composition 有权
标题翻译：烯烃嵌段共聚物，润滑油粘度指数改进剂和润滑油组成
公开(公告)号：US07022766B2
公开(公告)日：2006-04-04
申请号：US10721107
申请日：2003-11-26
申请人： Keiji Okada , Shigenobu Ikenaga , Ryousuke Kaneshige , Tomoaki Matsugi , Shinichi Kojoh , Terunori Fujita
发明人： Keiji Okada , Shigenobu Ikenaga , Ryousuke Kaneshige , Tomoaki Matsugi , Shinichi Kojoh , Terunori Fujita
IPC分类号： C08F255/04 , C08F210/02 , C08F210/06 , C10M107/04
CPC分类号： C10M143/04 , C08F210/06 , C08F210/16 , C08F297/08 , C08F297/083 , C08L53/00 , C10M143/02 , C08F2/001 , C08L2666/02 , C08F2500/03 , C08F2500/17
摘要： The present invention provides an olefin block copolymer for a viscosity index improver capable of preparing a lubricating oil composition having excellent low temperature properties and excellent balance between viscosity and shear stability, a viscosity index improver and a lubricating oil composition comprising the viscosity index improver.The olefin block copolymer has a Mw/Mn of not more than 1.5, and comprises:(i) a polymer block comprising ethylene and an α-olefin of 3 to 20 carbon atoms, having a molar ratio (ethylene/α-olefin) of ethylene units to α-olefin units of from 20/80 to 65/35, a Mw of 50,000 to 2,000,000, and having a slope of an intramolecular composition distribution of absolute value of 0.1 to 0, and(ii) a polymer block comprising ethylene and an α-olefin of 3 to 20 carbon atoms, having a molar ratio (ethylene/α-olefin) of ethylene units to α-olefin units of from 70/30 to 85/15, a Mw of 10,000 to 400,000, and having a slope of an intramolecular composition distribution of absolute value of 0.1 to 0.
摘要翻译：本发明提供一种能够制备具有优异的低温性能和粘度与剪切稳定性之间优异平衡的润滑油组合物的粘度指数改进剂的烯烃嵌段共聚物，粘度指数改进剂和包含粘度指数改进剂的润滑油组合物。烯烃嵌段共聚物的Mw / Mn不大于1.5，并且包括：（i）包含乙烯和3-20个碳原子的α-烯烃的聚合物嵌段，其摩尔比（乙烯/α-烯烃）为乙烯单元与α-烯烃单元的比例为20/80至65/35，Mw为50,000至2,000,000，绝对值为0.1至0的分子内组成分布的斜率，和（ii）包含乙烯的聚合物嵌段和具有3-20个碳原子的α-烯烃，乙烯单元与α-烯烃单元的摩尔比（乙烯/α-烯烃）为70/30至85/15，Mw为10,000至400,000，并具有分子内组成分布的斜率为0.1〜0。

2. 发明授权

US06589920B2 Viscosity modifier for lubricating oil and lubricating oil composition 有权
标题翻译：润滑油和润滑油组成的粘度调节剂
公开(公告)号：US06589920B2
公开(公告)日：2003-07-08
申请号：US09964485
申请日：2001-09-28
申请人： Keiji Okada , Ryousuke Kaneshige
发明人： Keiji Okada , Ryousuke Kaneshige
IPC分类号： C07C900
CPC分类号： C10M143/02 , C08F210/16 , C10M143/00 , C10M2205/00 , C10M2205/02 , C10M2205/022 , C10M2205/04 , C10M2209/084 , C10M2209/086 , C10N2220/02 , C10N2230/02 , C08F2500/03 , C10M2205/024
摘要： The lubricating oil composition of the invention comprises a lubricating oil base (A) and a copolymer (B) of ethylene and an &agr;-olefin of 3 to 20 carbon atoms. The copolymer (B) of ethylene and an &agr;-olefin of 3 to 20 carbon atoms is contained in the composition in an amount of 1 to 20% by weight and has the following properties: (1) the ethylene content (E) is in the range of 40 to 77% by weight, (2) the weight-average molecular weight (Mw) in terms of polystyrene, as measured by GPC, is in the range of 80,000 to 400,000, (3) Mw/Mn is not more than 2.4, (4) the melting point (Tm), as measured by DSC, is not higher than 60° C., (5) the ethylene content (E, % by weight) and the melting point (Tm, ° C.), as measured by DSC, satisfy the following relation (I): 3.31×E−186≧Tm (I), and (6) the intensity ratio, S&agr;&bgr;/S&agr;&agr;, measured by 13C-NMR spectrum is not more than 0.5.
摘要翻译：本发明的润滑油组合物包含乙烯和3-20个碳原子的α-烯烃的润滑油基料（A）和共聚物（B）。乙烯和3〜20个碳原子的α-烯烃的共聚物（B）的含量为1〜20重量％，具有以下性质：（1）乙烯含量（E）为 40〜77重量％的范围，（2）通过GPC测定的聚苯乙烯换算重量平均分子量（Mw）在80,000〜400,000的范围内，（3）Mw / Mn不大超过2.4，（4）通过DSC测量的熔点（Tm）不高于60℃，（5）乙烯含量（E，重量％）和熔点（Tm，℃））通过DSC测量满足以下关系式（I）：（6）通过13 C-NMR光谱测定的浓度比Salimuma / Salphaalpha不大于0.5。

3. 发明申请

US20060122079A1 Lubricating oil composition and internal combustion engine oil 有权
标题翻译：润滑油组成和内燃机油
公开(公告)号：US20060122079A1
公开(公告)日：2006-06-08
申请号：US10534580
申请日：2003-11-11
申请人： Ryousuke Kaneshige , Keiji Okada , Masaaki Kawasaki , Satoshi Ikeda
发明人： Ryousuke Kaneshige , Keiji Okada , Masaaki Kawasaki , Satoshi Ikeda
IPC分类号： C10M143/04 , C10M107/06
CPC分类号： C10M107/06 , C10M2205/022 , C10N2220/02 , C10N2220/021 , C10N2220/022 , C10N2230/02 , C10N2230/06 , C10N2230/08 , C10N2240/04 , C10N2240/08 , C10N2240/10 , C10M2205/024
摘要： The present invention provides a lubricating oil composition having excellent low temperature viscosity properties suitable for engine oils for automobiles and industries, gear oils, shock absorber oils, hydraulic fluids and it also provides a lubricating oil for internal-combustion engines formed from the composition. The lubricating oil composition comprises; a lubricating oil base (A) having a kinematic viscosity at 100° C. of 1 to 50 mm2/s and a viscosity index of not less than 80, an ethylene•propylene copolymer (B) having the following properties (B1) to (B4) such that (B1) the ethylene content is from 30 to 75% by weight, (B2) the intrinsic viscosity [η] is from 1.3 to 2.0 dl/g, (B3) the Mw/Mn is not more than 2.4 and (B4) the melting point as measured with DSC is not higher than 30° C., and optionally a pour point depressant (C).
摘要翻译：本发明提供一种具有优异的低温粘度性能的润滑油组合物，其适用于汽车和工业用发动机油，齿轮油，减震器油，液压油，并且还提供由该组合物形成的内燃机的润滑油。润滑油组合物包含：在100℃下的运动粘度为1〜50mm 2 / s，粘度指数为80以上的润滑油基材（A），乙烯 - 丙烯共聚物（B）具有（B1）至（B4）的特性粘度η为1.3〜2.0dl / g，（B1）乙烯含量为（B）为30〜75重量％，（B 2） / Mn不大于2.4，（B4）用DSC测得的熔点不高于30℃，任选地是倾点下降剂（C）。

4. 发明授权

US06525007B2 Viscosity modifier for lubricating oil and lubricating oil composition 有权
标题翻译：润滑油和润滑油组成的粘度调节剂
公开(公告)号：US06525007B2
公开(公告)日：2003-02-25
申请号：US09876865
申请日：2001-06-08
申请人： Keiji Okada , Ryousuke Kaneshige
发明人： Keiji Okada , Ryousuke Kaneshige
IPC分类号： C07C900
CPC分类号： C10M177/00 , C10M143/02 , C10M143/04 , C10M157/00 , C10M171/00 , C10M2205/00 , C10M2205/022 , C10M2205/024 , C10N2220/02
摘要： The present invention is intended to obtain a viscosity modifier for a lubricating oil, by the use of which a lubricating oil composition of excellent low-temperature properties can be obtained, and to obtain a lubricating oil composition of excellent low-temperature properties containing the viscosity modifier. The viscosity modifier for a lubricating oil comprises an ethylene/propylene copolymer (A) having the properties: the density is in the range of 857 to 882 kg/m3, Mw is in the range of 80,000 to 400,000, Mw/Mn is not more than 2.3, and the density (D (kg/m3)) and the melting point (Tm (° C.)) satisfy the relation Tm≦1.247×D−1037; or comprises an ethylene/propylene copolymer (B) having the properties: the ethylene content is in the range of 70 to 79 wt %, Mw is not less than 80,000 and less than 250,000, Mw/Mn is not more than 2.3, Tm is in the range of 15 to 60° C., and the ethylene content (E (wt %)) and the melting point (Tm (° C.)) satisfy the relation 3.44×E−206≧Tm; or comprises an ethylene/propylene copolymer (C) having the properties: the ethylene content is in the range of 70 to 79 wt %, Mw is in the range of 250,000 to 400,000, Mw/Mn is not more than 2.3, Tm is in the range of 15 to 60° C., and the ethylene content (E (wt %)) and the melting point (Tm (° C.)) satisfy the relation 3.44×E−204≧Tm. The lubricating oil composition comprises the ethylene/propylene copolymer (A) (B) or (C), a lubricating oil base (D), and if necessary, a pour point depressant.
摘要翻译：本发明旨在获得润滑油的粘度调节剂，通过使用可以获得具有优异的低温性能的润滑油组合物，并获得含有粘度的优异的低温性能的润滑油组合物修饰语。用于润滑油的粘度调节剂包括具有以下性质的乙烯/丙烯共聚物（A）：密度在857-882kg / m 3的范围内，Mw在80,000至400,000范围内，Mw / Mn不大（D（kg / m3））和熔点（Tm（℃））满足Tm <= 1.247×D-1037的关系; 或包含乙烯/丙烯共聚物（B），其乙烯含量在70至79重量％范围内，Mw不小于80,000且小于250,000，Mw / Mn不大于2.3，Tm为在15〜60℃的范围内，乙烯含量（E（wt％））和熔点（Tm（℃））满足关系3.44×E-206> = Tm; 或包含具有以下性质的乙烯/丙烯共聚物（C）：乙烯含量在70至79重量％的范围内，Mw在250,000至400,000的范围内，Mw / Mn不大于2.3，Tm在 15〜60℃的范围和乙烯含量（E（重量％））和熔点（Tm（℃））满足关系3.44×E-204> = Tm。润滑油组合物包含乙烯/丙烯共聚物（A）（B）或（C），润滑油基料（D），如果需要，还含有倾点降低剂。

5. 发明授权

US07820607B2 Viscosity modifier for lubricating oils, additive composition for lubricating oils, and lubricating oil compositions 有权
标题翻译：用于润滑油的粘度调节剂，用于润滑油的添加剂组合物和润滑油组合物
公开(公告)号：US07820607B2
公开(公告)日：2010-10-26
申请号：US11662139
申请日：2005-09-08
申请人： Akihiro Matsuda , Ryousuke Kaneshige , Satoshi Ikeda , Keiji Okada
发明人： Akihiro Matsuda , Ryousuke Kaneshige , Satoshi Ikeda , Keiji Okada
IPC分类号： C10M143/00
CPC分类号： C08F210/06 , C08F4/65908 , C08F4/65912 , C08F210/16 , C08F2420/02 , C10M143/06 , C10M143/08 , C10M2203/1006 , C10M2205/022 , C10N2220/021 , C10N2220/022 , C10N2230/02 , C08F4/6592 , C08F210/14 , C08F2500/17 , C08F2500/03 , C08F2500/20 , C10M2205/026 , C10M2205/024 , C10M2205/028
摘要： A viscosity modifier for lubricating oils or an additive composition for lubricating oils, which is excellent in oil-thickening properties and can provide lubricating oil compositions excellent in low-temperature characteristics and handleability at low temperatures; and lubricating oil compositions excellent in low-temperature characteristics and handleability at low temperatures. The viscosity modifier comprises an ethylene/α-olefin copolymer (B) which comprises (i) a structural unit derived from ethylene, (ii) a structural unit derived from an α-olefin having 3 to 19 carbon atoms, and (iii) a structural unit derived from a higher α-olefin having 4 to 20 carbon atoms whose carbon number is by one or more larger than that of the α-olefin having the unit (ii) which has the following properties of (1) and (2): (1) the contents of units (i), (ii) and (iii) are 25-49 mol %, 15-55 mol %, and 9-40 mol % respectively (with the proviso that the total of the units (i), (ii), and (iii) is 100 mol %) and (2) the intrinsic viscosity [η] is 0.5 to 5.0 dl/g.
摘要翻译：一种用于润滑油的粘度调节剂或润滑油添加剂组合物，其油增稠性能优异，并且可以提供低温特性和低温处理性优异的润滑油组合物; 以及在低温下具有优异的低温特性和可操作性的润滑油组合物。粘度调节剂包括乙烯/α-烯烃共聚物（B），其包含（i）衍生自乙烯的结构单元，（ii）衍生自具有3至19个碳原子的α-烯烃的结构单元，和（iii）具有碳原子数为1以上的具有碳原子数4〜20的高级α-烯烃的结构单元比具有（1）和（2）的以下性质的具有单元（ⅱ）的α-烯烃的碳原子数为1以上，：（1）单位（i），（ii）和（iii）的含量分别为25-49mol％，15-55mol％和9-40mol％（条件是单位（ i），（ii）和（iii）为100摩尔％）和（2）特性粘度[ηe]为0.5〜5.0dl / g。

6. 发明授权

US08410035B2 Viscosity modifier of lubricating oil for power transmission system and lubricating oil composition for power transmission system 有权
标题翻译：动力传动系统润滑油粘度调节剂和动力传动系统润滑油组成
公开(公告)号：US08410035B2
公开(公告)日：2013-04-02
申请号：US11886960
申请日：2006-03-24
申请人： Ryousuke Kaneshige , Akihiro Matsuda , Satoshi Ikeda , Keiji Okada , Masaaki Kawasaki
发明人： Ryousuke Kaneshige , Akihiro Matsuda , Satoshi Ikeda , Keiji Okada , Masaaki Kawasaki
IPC分类号： C10M119/02 , C08F10/06
CPC分类号： C10M169/041 , C10M107/02 , C10M143/00 , C10M2203/1006 , C10M2205/02 , C10M2205/022 , C10M2205/024 , C10M2209/084 , C10N2220/02 , C10N2220/021 , C10N2220/022 , C10N2220/032 , C10N2230/02 , C10N2230/68 , C10N2240/04 , C10N2240/042
摘要： A lubricating oil composition for a power transmission system, which is excellent in both of low-temperature viscosity property and shear stability, is provided. The viscosity modifier of a lubricating oil for a power transmission system according to the present invention comprises an ethylene/α-olefin copolymer (B) having the properties: (B1) an ethylene content in the range of 70 to 85% by mol, (B2) an intrinsic viscosity [η] in the range of 0.2 to 1.0 dl/g, (B3) Mw/Mn not more than 2.4, and (B4) a melting point, as measured by DSC, not higher than 60° C., or no melting point observed.
摘要翻译：提供了低温粘度特性和剪切稳定性优异的动力传递系统用润滑油组合物。根据本发明的用于动力传动系统的润滑油的粘度调节剂包括具有以下性质的乙烯/α-烯烃共聚物（B）：（B1）乙烯含量在70至85摩尔％的范围内（ B2）在0.2〜1.0dl / g范围内的特性粘度[（e）]，（B3）Mw / Mn不大于2.4，（B4）通过DSC测定的熔点不高于60℃ ，或没有观察到熔点。

7. 发明授权

US07622433B2 Lubricating oil composition and internal combustion engine oil 有权
标题翻译：润滑油组成和内燃机油
公开(公告)号：US07622433B2
公开(公告)日：2009-11-24
申请号：US10534580
申请日：2003-11-11
申请人： Ryousuke Kaneshige , Keiji Okada , Masaaki Kawasaki , Satoshi Ikeda
发明人： Ryousuke Kaneshige , Keiji Okada , Masaaki Kawasaki , Satoshi Ikeda
IPC分类号： C10L1/16
CPC分类号： C10M107/06 , C10M2205/022 , C10N2220/02 , C10N2220/021 , C10N2220/022 , C10N2230/02 , C10N2230/06 , C10N2230/08 , C10N2240/04 , C10N2240/08 , C10N2240/10 , C10M2205/024
摘要： The present invention provides a lubricating oil composition having excellent low temperature viscosity properties suitable for engine oils for automobiles and industries, gear oils, shock absorber oils, hydraulic fluids and it also provides a lubricating oil for internal-combustion engines formed from the composition.The lubricating oil composition comprises; a lubricating oil base (A) having a kinematic viscosity at 100° C. of 1 to 50 mm2/s and a viscosity index of not less than 80, an ethylene•propylene copolymer (B) having the following properties (B1) to (B4) such that (B1) the ethylene content is from 30 to 75% by weight, (B2) the intrinsic viscosity [η] is from 1.3 to 2.0 dl/g, (B3) the Mw/Mn is not more than 2.4 and (B4) the melting point as measured with DSC is not higher than 30° C., and optionally a pour point depressant (C).
摘要翻译：本发明提供一种具有优异的低温粘度性能的润滑油组合物，其适用于汽车和工业用发动机油，齿轮油，减震器油，液压油，并且还提供由该组合物形成的内燃机的润滑油。润滑油组合物包含：在100℃下的运动粘度为1〜50mm 2 / s，粘度指数为80以上的润滑油基材（A）具有以下特性的乙烯 - 丙烯共聚物（B）（B1）〜（ B4），使得（B1）乙烯含量为30〜75重量％，（B2）特性粘度η为1.3〜2.0dl / g，（B3）Mw / Mn为2.4以下，（B4）用DSC测定的熔点不高于30℃，任选地是倾点降低剂（C）。

8. 发明申请

US20090023619A1 Viscosity modifier of lubricating oil for power transmission system and lubricating oil composition for power transmission system 有权
标题翻译：动力传动系统润滑油粘度调节剂和动力传动系统润滑油组成
公开(公告)号：US20090023619A1
公开(公告)日：2009-01-22
申请号：US11886960
申请日：2006-03-24
申请人： Ryousuke Kaneshige , Akihiro Matsuda , Satoshi Ikeda , Keiji Okada , Masaaki Kawasaki
发明人： Ryousuke Kaneshige , Akihiro Matsuda , Satoshi Ikeda , Keiji Okada , Masaaki Kawasaki
IPC分类号： C10M145/14 , C08F210/02 , C10M143/02
CPC分类号： C10M169/041 , C10M107/02 , C10M143/00 , C10M2203/1006 , C10M2205/02 , C10M2205/022 , C10M2205/024 , C10M2209/084 , C10N2220/02 , C10N2220/021 , C10N2220/022 , C10N2220/032 , C10N2230/02 , C10N2230/68 , C10N2240/04 , C10N2240/042
摘要： A lubricating oil composition for a power transmission system, which is excellent in both of low-temperature viscosity property and shear stability, is provided. The viscosity modifier of a lubricating oil for a power transmission system according to the present invention comprises an ethylene/α-olefin copolymer (B) having the properties: (B1) an ethylene content in the range of 70 to 85% by mol, (B2) an intrinsic viscosity [η] in the range of 0.2 to 1.0 dl/g, (B3) Mw/Mn not more than 2.4, and (B4) a melting point, as measured by DSC, not higher than 60° C., or no melting point observed.
摘要翻译：提供了低温粘度特性和剪切稳定性优异的动力传递系统用润滑油组合物。根据本发明的用于动力传动系统的润滑油的粘度调节剂包括具有以下性质的乙烯/α-烯烃共聚物（B）：（B1）乙烯含量在70至85摩尔％范围内（ B2）特性粘度η在0.2〜1.0dl / g的范围内，（B3）Mw / Mn不大于2.4，（B4）通过DSC测定的熔点不高于60℃。，或没有观察到熔点。

9. 发明授权

US06764985B2 Viscosity modifier for lubricating oil and lubricating oil composition 有权
标题翻译：润滑油和润滑油组成的粘度调节剂
公开(公告)号：US06764985B2
公开(公告)日：2004-07-20
申请号：US10030382
申请日：2002-01-10
申请人： Keiji Okada , Ryousuke Kaneshige
发明人： Keiji Okada , Ryousuke Kaneshige
IPC分类号： C10M14308
CPC分类号： C10M157/00 , C08F4/65908 , C08F210/16 , C10M143/00 , C10M143/02 , C10M143/04 , C10M143/06 , C10M143/08 , C10M2203/065 , C10M2205/00 , C10M2205/02 , C10M2205/022 , C10M2205/024 , C10M2205/026 , C10M2205/028 , C10M2205/04 , C10M2209/0625 , C10M2209/0845 , C10M2209/0863 , C10N2220/02 , C10N2220/021 , C10N2230/02 , C10N2270/00 , C08F4/6592 , C08F210/06 , C08F210/08 , C08F2500/03 , C08F2500/17 , C08F210/14
摘要： This invention aims to provide lubricating oil compositions excellent in low-temperature properties, oxidation stability, lubricity at high temperatures and fuel efficiency and also in handling properties at low temperatures, and a viscosity modifier for lubricating oil employable in said lubricating oil compositions. The viscosity modifier for lubricating oil comprises an ethylene/&agr;-olefin copolymer (B) composed of: (i) ethylene, (ii) an &agr;-olefin of 3 or more carbon atoms, and (iii) a higher &agr;-olefin of 4 to 20 carbon atoms wherein the carbon number of (iii) is larger than that of (ii) by one or more, and the ethylene/&agr;-olefin copolymer (B) has the following properties (b-1) and (b-2): (b-1) a content of ethylene (i) is in the range of 40 to 80% by weight, a content of the &agr;-olefin of 3 or more carbon atoms (ii) is in the range of 15 to 59% by weight, and a content of the higher &agr;-olefin of 4 to 20 carbon atoms (iii) is in the range of 0.1 to 25% by weight with the proviso that the sum is 100% by weight; and (b-2) a weight-average molecular weight (Mw) in terms of polystyrene as measured by GPC is between 80,000 and 400,000.
摘要翻译：本发明的目的在于提供低温性，氧化稳定性，高温润滑性和燃料效率以及低温处理性能优异的润滑油组合物，以及可用于所述润滑油组合物中的润滑油用粘度调节剂。粘度用于润滑油的改性剂包括由以下组成的乙烯/α-烯烃共聚物（B）：（i）乙烯，（ii）3个或更多个碳原子的α-烯烃，和（iii）4至20个较高级的α-烯烃（ⅲ）的碳原子数大于（ⅱ）的碳原子数为1以上的碳原子，乙烯/α-烯烃共聚物（B）具有以下性质（b-1）和（b-2）:( b-1）乙烯（i）的含量在40〜80重量％的范围内，碳原子数3以上的α-烯烃的含量（ii）为15〜59重量％，并且含有4-20个碳原子的高级α-烯烃（ⅲ）的含量在0.1〜25重量％的范围内，p 总重量为100％的roviso; 和（b-2）通过GPC测定的以聚苯乙烯换算的重均分子量（Mw）为8万至40万。

10. 发明授权

US06214779B1 Lubricating oil or lubricating oil composition and fuel oil composition 失效
标题翻译：润滑油或润滑油组成和燃油组成
公开(公告)号：US06214779B1
公开(公告)日：2001-04-10
申请号：US09101335
申请日：1998-07-07
申请人： Ryousuke Kaneshige , Hideki Hirano , Masahide Tanaka , Kenichi Morizono , Keiji Okada
发明人： Ryousuke Kaneshige , Hideki Hirano , Masahide Tanaka , Kenichi Morizono , Keiji Okada
IPC分类号： C10M10102
CPC分类号： C10L10/08 , C08L23/0815 , C08L91/00 , C10L1/165 , C10M107/02 , C10M107/12 , C10M143/00 , C10M143/10 , C10M2205/00 , C10M2205/02 , C10M2205/0206 , C10M2205/04 , C10M2205/043 , C08L2666/02
摘要： The present invention is directed towards a lubricating oil comprising a random copolymer of an &agr;-olefin/aromatic vinyl compound, wherein the copolymer has a viscosity falling within a specific range and comprises ethylene, an aromatic vinyl compound, and optionally an &agr;-olefin. The lubricating oil possesses excellent viscosity properties, thermal stability, oxidation stability, abrasion resistance, and compatibility with lubricating oil additives. The random copolymer having a different viscosity range is useful as a viscosity index improver and a compatibilizing agent for a lubricating oil. The invention also provides a lubricating oil composition comprising a base oil and the viscosity index improver or the compatibilizing agent. The invention further provides a fuel oil composition comprising a fuel oil fluidity improver based on the above random copolymer having a different viscosity range and a middle fraction fuel oil having a boiling point of 150 to 400° C. The fuel oil composition prevents an increase in viscosity of the middle fraction fuel oil, lowers the clogging point and the flow point in a low-temperature filter, and inhibits the abrasion of a fuel jet nozzle.
摘要翻译：本发明涉及包含α-烯烃/芳族乙烯基化合物的无规共聚物的润滑油，其中所述共聚物的粘度落在特定范围内并且包含乙烯，芳族乙烯基化合物和任选的α-烯烃。润滑油具有优异的粘度性能，热稳定性，氧化稳定性，耐磨性和与润滑油添加剂的相容性。具有不同粘度范围的无规共聚物可用作粘度指数改进剂和润滑油相容剂。本发明还提供一种包含基础油和粘度指数改进剂或相容剂的润滑油组合物。本发明还提供了一种燃料油组合物，其包含基于上述具有不同粘度范围的无规共聚物的燃料油流动性改进剂和沸点为150-400℃的中间馏分燃料油。燃料油组合物防止了中间馏分燃料油的粘度降低低温过滤器中的堵塞点和流动点，并且抑制燃料喷嘴的磨损。

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