公开(公告)号：US20190106645A1

公开(公告)日：2019-04-11

申请号：US16088654

申请日：2016-12-14

申请人： IDEMITSU KOSAN CO., LTD.

发明人： Shinji AOKI ,  Moritsugu KASAI ,  Asami KOGA

IPC分类号： C10M101/02 ,  C10M171/02 ,  C10M117/04 ,  C10M115/08 ,  C10M169/02

摘要： The present invention provides a mineral base oil having a kinetic viscosity at 100° C. of 7 mm2/s or more and less than 10 mm2/s, a viscosity index of 100 or more, and a temperature gradient Δ|η*| complex viscosity between two temperature points of −5° C. and −15° C. of 240 mPa·s/° C. or less as measured with a rotary rheometer at an angular velocity of 6.3 rad/s. The use of the mineral base oil enables easy preparation of a lubricating oil composition and a grease composition having excellent oxidation stability while ensuring the freedom of selection of additives.

公开(公告)号：US20160002563A1

公开(公告)日：2016-01-07

申请号：US14772201

申请日：2014-02-27

申请人： IDEMITSU KOSAN CO., LTD.

发明人： Moritsugu KASAI ,  Hideki KAMANO

IPC分类号： C10M161/00

CPC分类号： C10M161/00 ,  C10M157/00 ,  C10M2203/1025 ,  C10M2205/02 ,  C10M2205/028 ,  C10M2207/026 ,  C10M2207/28 ,  C10M2209/084 ,  C10M2215/064 ,  C10M2215/086 ,  C10M2215/28 ,  C10M2223/045 ,  C10N2220/021 ,  C10N2220/022 ,  C10N2220/033 ,  C10N2230/02 ,  C10N2230/10 ,  C10N2230/68 ,  C10N2240/10 ,  C10N2260/14

摘要： A lubricating oil composition of the invention contains: a lubricating base oil; a component (A) that is a polymethacrylate having a mass average molecular weight in a range from 30,000 to 600,000; and a component (B) that is an olefin copolymer having a 95% weight-loss temperature of 500 degrees C. or less as calculated by differential thermal analysis and having 40 or less of SSI (Shear Stability Index).

摘要翻译： 本发明的润滑油组合物含有：润滑油基础油; 作为质量平均分子量为30,000〜600,000的聚甲基丙烯酸酯的成分（A） 以及作为通过差热分析计算且具有40以下的SSI（剪切稳定性指数）计算的具有500℃以下的95％重量损失温度的烯烃共聚物的组分（B）。

公开(公告)号：US20210009918A1

公开(公告)日：2021-01-14

申请号：US17040711

申请日：2019-03-29

申请人： IDEMITSU KOSAN CO.,LTD.

发明人： Hiroaki KOSHIMA ,  Yoriyuki TAKASHIMA ,  Moritsugu KASAI

IPC分类号： C10M143/18 ,  C08F8/46 ,  C08F110/08 ,  C10M129/76 ,  C10M161/00 ,  C10M169/04

摘要： A dispersant for a lubricating oil, containing at least one compound selected from a specific nitrogen-containing compound which is obtained by using, as raw materials, (A) at least one polyolefin selected from polybutene and polyisobutene, (B) at least one maleic acid compound selected from maleic acid and maleic anhydride, and (C) polyamine; a boride of the specific nitrogen-containing compound; and an acylated product of the specific nitrogen-containing compound. The polyolefin (A) satisfies at least one of the following conditions (α) and (β). (α) a ratio (Sb/Sa) of an integrated value (Sb) of a peak present at 4.40 to 5.00 ppm in a 1H-NMR spectrum to an integrated value (Sa) of a peak present at 5.01 to 5.60 ppm in the 1H-NMR spectrum is 2 or more. (β) a ratio (Sd/Sc) of an integrated value (Sd) of a peak present at 1.76 to 2.10 ppm in the 1H-NMR spectrum to an integrated value (Sc) of a peak present at 1.65 to 1.75 ppm in the 1H-NMR spectrum is 1 or more.

公开(公告)号：US20200048576A1

公开(公告)日：2020-02-13

申请号：US16498181

申请日：2018-03-20

申请人： IDEMITSU KOSAN CO., LTD.

发明人： Naoto HORITA ,  Tsukasa YAMAGISHI ,  Moritsugu KASAI

IPC分类号： C10M169/04 ,  C10M143/04 ,  C10M145/14 ,  C10M157/00 ,  C10M129/50 ,  C10M135/10 ,  C10M141/08 ,  C10M161/00

摘要： The present invention provides a lubricating oil composition for two-wheeled vehicles, which is able to not only suppress a lowering of fatigue life of engine parts while making fuel saving properties (in particular, fuel saving properties at the time of low speed) favorable but also make clutch friction characteristics of two-wheeled vehicles favorable. The present invention is concerned with a lubricating oil composition for two-wheeled vehicles, including a base oil (A) having a viscosity index of 120 or more, an ethylene-propylene copolymer (B), and a metal-based detergent (C), wherein the content of the ethylene-propylene copolymer (B) is 0.30% by mass or more on the basis of the whole amount of the lubricating oil composition; the metal-based detergent (C) contains a calcium phenate (C1) and a calcium sulfonate (C2), and a mass ratio of the content (Ca1) of the calcium phenate (C1) as expressed in terms of a calcium atom to the content (Ca2) of the calcium sulfonate (C2) as expressed in terms of a calcium atom is satisfied with a relation of (1.0≤Ca1/Ca2); and the lubricating oil composition has a kinematic viscosity at 100° C. is less than 9.3 mm2/s and an HTHS viscosity at 150° C. is 2.9 mPa·s or more.

公开(公告)号：US20210047581A1

公开(公告)日：2021-02-18

申请号：US16979675

申请日：2019-03-14

申请人： IDEMITSU KOSAN CO.,LTD.

发明人： Moritsugu KASAI ,  Toshimasa UTAKA

IPC分类号： C10M169/04 ,  C10M101/00 ,  C10M133/16 ,  C10M135/36 ,  C10M137/10 ,  C10M129/76

摘要： Provided is a lubricating oil composition for use in internal-combustion engines, containing a base oil (A), an ashless dispersant (B) containing a non-boronated alkenylsuccinic acid imide (B1) and a boronated alkenylsuccinic acid imide (B2), a thiadiazole compound (C), and an aromatic carboxylate (D) having one or more hydroxy groups, wherein the content of the component (C) is 0.2 to 1.2% by mass based on the total amount of the lubricating oil composition, the content of a zinc dithiophosphate is, as calculated in terms of zinc atoms, less than 500 ppm by mass based on the total amount of the lubricating oil composition, and the content of a metal-based detergent is, as calculated in terms of metal atoms, less than 600 ppm by mass based on the total amount of the lubricating oil composition.

公开(公告)号：US20190270943A1

公开(公告)日：2019-09-05

申请号：US16320157

申请日：2017-12-19

申请人： IDEMITSU KOSAN CO., LTD.

发明人： Moritsugu KASAI ,  Norihiro KURODA

IPC分类号： C10M101/02 ,  C10M145/14 ,  C10M143/02 ,  C10M143/04

摘要： Disclosed herein is a mineral base oil satisfying the following requirements (I) to (V): (I): a kinematic viscosity at 100° C. is 2 mm2/s or more and less than 7 mm2/s; (II): a viscosity index is 100 or more; (III): a temperature gradient Δ|η*| of complex viscosity between two points of −10° C. and −25° C. is 60 Pa·s/° C. or less as measured with a rotary rheometer under conditions at an angular velocity of 6.3 rad/s and a strain amount of 0.1 to 100%; (IV): a content ratio [R1/R2] of a monocyclo paraffin component (R1) to a dicyclo to hexacyclo paraffin component (R2) is 0.70 or less by a volume ratio as measured in accordance with ASTM D2786; and (V): a % CA is less than 1.0.

公开(公告)号：US20170369811A1

公开(公告)日：2017-12-28

申请号：US15543843

申请日：2016-01-15

申请人： IDEMITSU KOSAN CO., LTD.

发明人： Moritsugu KASAI

IPC分类号： C10M161/00 ,  C10M101/00 ,  F02M61/14 ,  C10M169/04 ,  C10M145/14 ,  C10M149/06 ,  C10M155/04 ,  F16J9/20 ,  C10M139/00

CPC分类号： C10M161/00 ,  C10M101/00 ,  C10M125/22 ,  C10M133/56 ,  C10M135/18 ,  C10M137/10 ,  C10M139/00 ,  C10M145/14 ,  C10M149/02 ,  C10M149/06 ,  C10M155/04 ,  C10M159/18 ,  C10M169/044 ,  C10M2203/1025 ,  C10M2205/02 ,  C10M2205/028 ,  C10M2207/023 ,  C10M2207/04 ,  C10M2207/262 ,  C10M2207/289 ,  C10M2209/084 ,  C10M2209/107 ,  C10M2209/108 ,  C10M2215/082 ,  C10M2215/26 ,  C10M2215/28 ,  C10M2217/024 ,  C10M2219/068 ,  C10M2223/045 ,  C10M2227/06 ,  C10M2227/066 ,  C10M2227/09 ,  C10M2229/00 ,  C10N2210/02 ,  C10N2210/06 ,  C10N2220/021 ,  C10N2230/06 ,  C10N2230/42 ,  C10N2230/43 ,  C10N2240/10 ,  F02M61/14 ,  F16J9/20 ,  C10N2260/14 ,  C10N2220/022

摘要： Provided is a lubricating oil composition to be used in an internal combustion engine having a sliding mechanism including a piston ring and a liner, the lubricating oil composition including: a base oil; (A) a poly(meth)acrylate; and (B) an organic molybdenum compound, in which: (A) the poly(meth)acrylate contains a polymer (A1) including a repeating unit derived from a (meth)acrylate represented by the following formula (1) and having a mass-average molecular weight of from 1,000 to 500,000; and a content of (B) the organic molybdenum compound in a total amount of the composition is from 0.01 mass % to 0.2 mass % in terms of a molybdenum atom: wherein R1 represents a hydrogen atom or a methyl group, and X represents a hydrogen atom, a hydrocarbon group having 1 to 60 carbon atoms, or a functional group-containing hydrocarbon group having 1 to 60 carbon atoms.

公开(公告)号：US20240191154A1

公开(公告)日：2024-06-13

申请号：US18553020

申请日：2022-03-02

申请人： IDEMITSU KOSAN CO.,LTD.

发明人： Tatsuya KUSUMOTO ,  Moritsugu KASAI

IPC分类号： C10M169/04 ,  C10M129/50 ,  C10M129/54 ,  C10M133/04 ,  C10M137/10 ,  C10M141/10 ,  C10M149/02 ,  C10M155/00 ,  C10M157/10 ,  C10M161/00 ,  C10N30/00 ,  C10N30/04 ,  C10N30/10 ,  C10N40/25

CPC分类号： C10M169/044 ,  C10M129/50 ,  C10M129/54 ,  C10M133/04 ,  C10M137/10 ,  C10M141/10 ,  C10M149/02 ,  C10M155/00 ,  C10M157/10 ,  C10M161/00 ,  C10M2203/003 ,  C10M2207/262 ,  C10M2215/26 ,  C10M2217/06 ,  C10M2223/045 ,  C10M2229/00 ,  C10N2030/04 ,  C10N2030/10 ,  C10N2030/45 ,  C10N2040/25

摘要： A lubricating oil composition for a gas engine containing: a base oil (A), at least one overbased calcium detergent (B) selected from the group consisting of calcium salicylate (B1) and calcium phenate (B2), alkenyl succinimide (C), and a hindered amine-based antioxidant (D), where the content (X) of calcium atoms derived from the component (B) is less than 0.090% by mass based on the total amount of the lubricating oil composition; the content (Y) of calcium carbonate contained in the component (B) is 0.060% by mass or more based on the total amount of the lubricating oil composition; the content of boron atoms derived from the component (C) is less than 0.020% by mass based on the total amount of the lubricating oil composition, and the content of the component (D) is more than 0.20% by mass based on the total amount of the lubricating oil composition.

公开(公告)号：US20230057229A1

公开(公告)日：2023-02-23

申请号：US17759057

申请日：2021-01-20

申请人： Idemitsu Kosan Co.,Ltd.

发明人： Moritsugu KASAI ,  Tatsuya KUSUMOTO

IPC分类号： G01N33/28 ,  G01N33/30 ,  C10M129/52 ,  C10M129/54 ,  C10M125/22 ,  C10M169/04

摘要： A method for utilizing a lubricating oil composition in which the content of a metal-based cleaning agent (X) having a base value of 100 mgKOH/g or less is 630 mass ppm or less in terms of metal atoms, and the content of sulfated ash is 1.5 mass % or less. The method includes measuring at least one physical property value among the capacitance and the dielectric constant of the lubricating oil composition while using the lubricating oil composition, and evaluating the progress of degradation of the lubricating oil composition.

公开(公告)号：US20190002794A1

公开(公告)日：2019-01-03

申请号：US16064806

申请日：2016-12-22

申请人： IDEMITSU KOSAN CO., LTD.

发明人： Moritsugu KASAI ,  Norihiro KURODA ,  Hisao ANZAI

IPC分类号： C10M169/04 ,  C10M101/02

摘要： Provided is a mineral base oil satisfying the following requirements (I) to (III): Requirement (I): a kinematic viscosity at 100° C. is 2 mm2/s or more and less than 7 mm2/s; Requirement (II): a viscosity index is 100 or more; and Requirement (III): a temperature gradient Δ|η*| of complex viscosity between two temperature points −10° C. and −25° C. is 60 Pa·s/° C. or less as measured with a rotary rheometer under conditions at an angular velocity of 6.3 rad/s and a strain amount of 0.1 to 100%. The foregoing mineral base oil can become a lubricating oil composition having desirable low-temperature viscosity characteristics, including low-temperature fuel consumption and low-temperature engine start-up performance, and also having excellent high-temperature piston detergency.