公开(公告)号：US20190241828A1

公开(公告)日：2019-08-08

申请号：US16318441

申请日：2017-11-30

申请人： IDEMITSU KOSAN CO., LTD.

发明人： Hiroshi OKI ,  Tatsuya KUSUMOTO

IPC分类号： C10M169/04 ,  C10M135/18 ,  C10M135/36 ,  C10M151/04 ,  C10M135/06 ,  C10M133/00 ,  C10M129/76 ,  C10M141/08 ,  C10M161/00

CPC分类号： C10M169/044 ,  C10M129/76 ,  C10M133/00 ,  C10M133/40 ,  C10M135/06 ,  C10M135/18 ,  C10M135/20 ,  C10M135/36 ,  C10M141/06 ,  C10M141/08 ,  C10M151/04 ,  C10M161/00 ,  C10M169/04 ,  C10M177/00 ,  C10M2203/003 ,  C10M2207/144 ,  C10M2215/26 ,  C10M2219/024 ,  C10M2219/066 ,  C10M2219/068 ,  C10M2219/106 ,  C10M2221/04 ,  C10N2230/04 ,  C10N2230/10 ,  C10N2230/45 ,  C10N2230/52 ,  C10N2240/10

摘要： To provide a lubricating oil composition that has good detergency irrespective of the small sulfated ash content thereof, and has a good friction reducing capability even after the deterioration thereof. The lubricating oil composition contains a base oil (A), a non-metal-containing sulfur antioxidant (B), and a hindered amine antioxidant (C) having one piperidine-derived skeleton in a molecule, and has a content of the non-metal-containing sulfur antioxidant (B) as converted in terms of sulfur atom of 800 ppm by mass or more based on the total amount of the lubricating oil composition, a content of the hindered amine antioxidant (C) as converted in terms of nitrogen atom of 100 ppm by mass or more and 400 ppm by mass or less based on the total amount of the lubricating oil composition, a sulfated ash content of 0.70% by mass or less, and a total base number of 4.0 mgKOH/g or more.

公开(公告)号：US20190106648A1

公开(公告)日：2019-04-11

申请号：US16088526

申请日：2017-03-30

申请人： IDEMITSU KOSAN CO., LTD.

发明人： Tatsuya KUSUMOTO ,  Ikuko NAKAYA

IPC分类号： C10M141/10 ,  C10M169/04 ,  C10M137/10 ,  C10M129/54 ,  C10M135/10 ,  C10M135/18

摘要： The present in relates to a lubricating oil composition for sliding member having a coating film, the lubricating oil composition containing a base oil; (A) a zinc dialkyldithiophosphate; and (B) a metallic detergent, wherein the content of sulfur atom (S) is 2,800 ppm by mass or less on the basis of the whole amount of the lubricating oil composition, and a mass ratio of the content of sulfur atom (S) and the content of metal atom (BM) derived from the component (B) [(S)/(BM)] in the lubricating oil composition is 0.07 or more and 2.90 or less.

公开(公告)号：US20220169946A1

公开(公告)日：2022-06-02

申请号：US17442769

申请日：2020-03-25

申请人： Idemitsu Kosan Co.,Ltd.

发明人： Tatsuya KUSUMOTO

IPC分类号： C10M169/04 ,  C10M133/44 ,  C10M129/54 ,  C10M139/00 ,  C10M137/10 ,  C10M141/12

摘要： Provided is a lubricating oil composition for a gas engine, comprising a base oil (A), a calcium-based detergent (B), and an alkenyl succinimide (C), wherein a content of calcium atoms is 0.09 to 0.17 mass % based on the total amount of the lubricating oil composition, the component (C) comprises a non-boron-modified alkenyl bis-succinimide (C1), and a content of boron atoms derived from the component (C) is less than 0.02 mass % based on the total amount of the lubricating oil composition.

公开(公告)号：US20170121627A1

公开(公告)日：2017-05-04

申请号：US15318369

申请日：2016-03-31

申请人： IDEMITSU KOSAN CO., LTD.

发明人： Motoharu ISHIKAWA ,  Tatsuya KUSUMOTO ,  Shinji SUZUKI

IPC分类号： C10M141/08 ,  C10M129/50 ,  C10M141/12

CPC分类号： C10M141/08 ,  C10M129/50 ,  C10M141/12 ,  C10M163/00 ,  C10M169/04 ,  C10M2203/003 ,  C10M2203/024 ,  C10M2203/1006 ,  C10M2207/023 ,  C10M2207/026 ,  C10M2207/262 ,  C10M2207/289 ,  C10M2209/084 ,  C10M2215/04 ,  C10M2215/064 ,  C10M2215/28 ,  C10M2219/046 ,  C10M2219/068 ,  C10M2223/045 ,  C10M2227/066 ,  C10N2210/02 ,  C10N2210/06 ,  C10N2220/021 ,  C10N2220/082 ,  C10N2230/02 ,  C10N2230/04 ,  C10N2230/06 ,  C10N2230/10 ,  C10N2230/38 ,  C10N2230/43 ,  C10N2230/45 ,  C10N2230/50 ,  C10N2230/52 ,  C10N2230/66 ,  C10N2240/10 ,  C10N2240/102 ,  C10N2240/104 ,  C10N2260/14

摘要： Provided are a lubricating oil composition for internal combustion engine, containing a lubricating base oil containing a mineral oil and/or a synthetic oil, (A) an overbased calcium salicylate, (B) an overbased magnesium detergent, (C) a binuclear and/or trinuclear organic molybdenum compound, (D) a phenol-based antioxidant, and (E) an amine-based antioxidant, wherein the component (C), the component (D), and the component (E) are contained in specified contents on the basis of the whole amount of the lubricating oil composition; a method for producing the lubricating oil composition for internal combustion engine; and a lubrication method including using the lubricating oil composition for internal combustion engine.

公开(公告)号：US20210047582A1

公开(公告)日：2021-02-18

申请号：US16978925

申请日：2019-03-12

申请人： IDEMITSU KOSAN CO.,LTD.

发明人： Tatsuya KUSUMOTO

IPC分类号： C10M169/04 ,  C10M101/02 ,  C10M143/14

摘要： The present invention relates to a lubricating oil composition containing a base oil (A) and a viscosity index improver (B) such that in X-ray small-angle scattering spectra obtained through measurement at 40° C. and 100° C., a ratio [Δ|α(40)|/Δ|α(100)|] between Δ|α(40)| and Δ|α(100)|, each of which is an absolute value of a slope of a straight line calculated in a range of the scattering vector q as the x axis of from 0.1 nm −1 to 1 nm −by the least-squares method, is 1.5 or more.

公开(公告)号：US20170198235A1

公开(公告)日：2017-07-13

申请号：US15320540

申请日：2016-03-31

申请人： IDEMITSU KOSAN CO., LTD.

发明人： Tatsuya KUSUMOTO

IPC分类号： C10M169/04 ,  C10M129/50 ,  C10M101/02 ,  C10M133/58 ,  C10M139/00 ,  C10M145/14 ,  C10M141/08 ,  C10M135/10

摘要： Provided is a lubricating oil composition capable of revealing fuel consumption reducing properties due to a friction reducing effect within a short period of time while having excellent fuel consumption reducing properties, specifically a lubricating oil composition of the present invention includes a base oil, a molybdenum dithiocarbamate, a calcium detergent, a magnesium detergent, and a boron-free succinimide, wherein the content of the molybdenum dithiocarbamate as converted into a molybdenum atom is 1,200 ppm by mass or less on a basis of the whole amount of the composition; the content of the boron-free succinimide as converted into a nitrogen atom is less than 1,200 ppm by mass on a basis of the whole amount of the composition; and a mass ratio of the molybdenum atom (Mo) to a magnesium atom (Mg) of the magnesium detergent [Mo/Mg] is 0.1 or more.

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：US20190024009A1

公开(公告)日：2019-01-24

申请号：US16079394

申请日：2017-02-24

申请人： IDEMITSU KOSAN CO., LTD.

发明人： Tatsuya KUSUMOTO ,  Motoharu ISHIKAWA ,  Hiroshi OKI

IPC分类号： C10M141/10 ,  C10M125/24 ,  C10M125/26 ,  C10M133/40 ,  C10M135/18 ,  C10M137/10 ,  C10M101/02

摘要： Provided is a lubricating oil composition containing a base oil (A); a molybdenum dithiophosphate (B1) in an amount of 400 ppm by mass or more as expressed in terms of a molybdenum atom; an organic metal-based detergent (C1) containing a metal atom selected from an alkali metal atom and an alkaline earth metal atom in an amount of 1,400 ppm by mass or less as expressed in terms of the metal atom; and a hindered amine-based antioxidant (D1) in an amount of 900 ppm by mass or more as expressed in terms of a nitrogen atom, with a sulfated ash content being 0.70% by mass or less. The lubricating oil composition may be one in which the detergency, the wear resistance, and the friction-reducing effect are improved with a well balance while reducing the ash content.