公开(公告)号：US20210130727A1

公开(公告)日：2021-05-06

申请号：US16633197

申请日：2018-09-27

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Shinji AOKI ,  Shota INOUE

IPC: C10M133/12 ,  C10M137/08 ,  C10M133/44 ,  C10M129/10 ,  C10M141/06 ,  C10M141/10 ,  C10M169/04

Abstract: The present invention relates to a hydraulic fluid composition containing a base oil (A), an antioxidant (B) including an amine-based antioxidant (B1) and a phenol-based antioxidant (B2), and a succinimide-based compound (C), wherein the hydraulic fluid composition satisfies the following requirement (I): and is to be used for hydraulic equipment which is equipped with at least one of a wet type brake and a wet type clutch and which is selected from a construction machinery, a general industrial machinery, and a power generator, and in which a working pressure is 30 MPa or more. The hydraulic fluid composition is not only excellent in wear resistance and an effect for suppressing the sludge formation but also excellent in a braking performance or a clutch performance, even when used under a high-pressure condition.
Requirement (I): A static friction coefficient (μs) after 1,000 cycles, as measured in conformity with the SAE No. 2 test described in JCMAS P 047:2004, is 0.100 to 0.162.

公开(公告)号：US20190106645A1

公开(公告)日：2019-04-11

申请号：US16088654

申请日：2016-12-14

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Shinji AOKI ,  Moritsugu KASAI ,  Asami KOGA

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

Abstract: 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：US20190024008A1

公开(公告)日：2019-01-24

申请号：US16071688

申请日：2017-01-16

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Shinji AOKI ,  Hidenori TORII

IPC: C10M137/04 ,  C10M169/04 ,  C10M133/12 ,  C10M101/02

Abstract: Provided is a lubricating oil composition containing a base oil (A) and an amine-based antioxidant (B), wherein the component (B) contains a phenyl-naphthylamine (B1), an alkylphenyl-naphthylamine (B2) and a di(alkylphenyl)amine (B3), the content of the component (B1) is 2.0 to 10.0% by mass relative to 100% by mass of the total amount of the component (B), the content of the component (B2) is 40.0 to 90.0% by mass relative to 100% by mass of the total amount of the component (B), and the content of the component (B3) is 8.0 to 50.0% by mass relative to 100% by mass of the total amount of the component (B). The lubricating oil composition maintains excellent oxidation stability even in long-term use in high-temperature environments, and has an excellent lifetime and is excellent also in a sludge preventing effect.

公开(公告)号：US20170283730A1

公开(公告)日：2017-10-05

申请号：US15508128

申请日：2015-09-11

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Shinji AOKI ,  Masahiro KOBESSHO ,  Keizo MURATA

IPC: C10M105/80 ,  C07F7/22 ,  C07F7/24 ,  C07F7/30

CPC classification number: C10M105/80 ,  C07F7/2208 ,  C07F7/24 ,  C07F7/30 ,  C10M2227/08 ,  C10M2227/082 ,  C10M2227/083 ,  C10N2240/20

Abstract: Provided are a pressure medium oil, containing a Group-14 element-containing organic compound selected from an organic germanium compound, an organic tin compound, and an organic lead compound, and a method for using a pressure medium oil, which includes applying a pressure to a substance via the pressure medium oil. The pressure medium oil does not solidify even under an ultrahigh pressure of more than 3.7 GPa at room temperature (25° C.) and has a low pour point, and hardly dissolves a conductive paste.

公开(公告)号：US20200017791A1

公开(公告)日：2020-01-16

申请号：US16491052

申请日：2018-03-08

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Shinji AOKI

IPC: C10M105/38 ,  C10M133/12 ,  C10M145/14 ,  C10M127/06 ,  C10M169/04

Abstract: A turbine oil used in a turbine of a jet engine, containing: a base oil (A) containing a polyol ester (A1); an antioxidant (B) containing an amine-based antioxidant (B1); a polymethacrylate (C) having a weight average molecular weight of 50,000 to 600,000; and an alkyl aromatic compound (D), having a content of the component (D) of 1,000 parts by mass or less per 100 parts by mass of a total resin content of the component (C), and satisfying the following requirements (1) and (2): requirement (1): a viscosity index of 140 or more; and requirement (2): a coking amount attached to a panel of 80 mg or less after a panel coking test under the prescribed condition. The turbine oil has a high viscosity index to such an extent that an oil film can be retained in the use under a high temperature environment as in a turbine of a jet engine mounted on an aircraft, and is excellent in low temperature viscosity characteristics while retaining excellent heat resistance.

公开(公告)号：US20170335231A1

公开(公告)日：2017-11-23

申请号：US15533136

申请日：2015-08-12

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Shinji AOKI ,  Tadashi KISEN

IPC: C10M169/04 ,  C10M105/36 ,  C10M145/30

CPC classification number: C10M169/041 ,  C10M105/36 ,  C10M145/30 ,  C10M2207/0406 ,  C10M2207/2825 ,  C10M2207/2845 ,  C10M2207/2855 ,  C10M2209/084 ,  C10M2209/103 ,  C10M2209/1033 ,  C10M2209/1045 ,  C10M2209/105 ,  C10N2230/00 ,  C10N2230/02 ,  C10N2230/68 ,  C10N2240/02 ,  C10N2240/04 ,  C10N2240/08 ,  C10N2220/022 ,  C10M2209/108 ,  C10M2209/109

Abstract: A lubricating oil composition prepared by blending a base oil (A) containing a compound (A1) that is an ester or ether and has two or more aromatic rings, with a polyalkylene glycol (B) is provided. The lubricating oil composition has a high density (i.e., a high bulk modulus), a high viscosity index, and excellent shear stability.

公开(公告)号：US20190177648A1

公开(公告)日：2019-06-13

申请号：US16321916

申请日：2017-08-07

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Shinji AOKI ,  Shota HIRAKAWA

IPC: C10M169/04 ,  C10M137/08 ,  C10M105/38 ,  C10M105/34 ,  C10M133/12

Abstract: Provided is a lubricating oil composition comprising a base oil (A) containing a polyalkylene glycol (A1) and a polyol ester (A2), a phosphorus-based rust inhibitor (B), and an antioxidant (C) containing an amine-based antioxidant (C1). The lubricating oil composition exhibits a strong effect for suppressing sludge sedimentation even when used for an extended period of time in a high-temperature environment, and has excellent demulsibility and rust preventive properties, and therefore, can be suitably used in turbomachinery, compressors, hydraulic equipment, and machine tools.

公开(公告)号：US20180044606A1

公开(公告)日：2018-02-15

申请号：US15552854

申请日：2016-02-25

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Shinji AOKI

IPC: C10M169/04

CPC classification number: C10M169/04 ,  C10M105/32 ,  C10M105/38 ,  C10M129/10 ,  C10M129/76 ,  C10M133/12 ,  C10M137/10 ,  C10M2207/026 ,  C10M2207/2805 ,  C10M2207/282 ,  C10M2207/283 ,  C10M2207/2835 ,  C10M2207/288 ,  C10M2207/289 ,  C10M2209/084 ,  C10M2215/064 ,  C10M2215/223 ,  C10M2219/044 ,  C10M2223/00 ,  C10M2223/04 ,  C10M2223/041 ,  C10M2223/047 ,  C10M2229/02 ,  C10N2220/00 ,  C10N2220/021 ,  C10N2220/025 ,  C10N2230/00 ,  C10N2230/02 ,  C10N2230/06 ,  C10N2230/08 ,  C10N2230/10 ,  C10N2230/64 ,  C10N2240/08

Abstract: The present invention provides a biodegradable lubricating oil composition containing 50% by mass or more of a synthetic ester base oil (A), 0.1 to 3% by mass of an amine-based antioxidant (B1), 0.1 to 3% by mass of a phenol-based antioxidant (B2), and 0.01 to 2% by mass of a sulfur-phosphorus-based extreme-pressure agent (C), wherein the transmittance at 3,005±1 cm−1 of a 0.1 mm-thick liquid film of the composition, as measured through IR absorptiometry, is 50% or more.

公开(公告)号：US20160032214A1

公开(公告)日：2016-02-04

申请号：US14779486

申请日：2014-02-10

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Jitsuo SHINODA ,  Shinji AOKI

IPC: C10M161/00

Abstract: A lubricating oil composition contains: a base oil with a kinematic viscosity at 40 degrees C. in a range from 1 mm2/s to 200 mm2/s, a viscosity index of 80 or more and a sulfur content of less than 0.03 mass %; a component (A) being a polyacrylate compound with a mass average molecular weight in a range from 10,000 to 100,000; and a component (B) being at least one of phosphorus compounds represented by a formula (1) below. A content of the component (B) is in a range from 0.05 mass % to 2.0 mass % of a total amount of the composition, and a viscosity index of the composition is 160 or more.

Abstract translation: 润滑油组合物含有：在40℃下的运动粘度为1 / 2mm〜200mm 2 / s，粘度指数为80以上，硫含量为0.03质量％以下的基油; 组分（A）是质量平均分子量在10,000至100,000范围内的聚丙烯酸酯化合物; 和组分（B）是由下式（1）表示的磷化合物中的至少一种。 组分（B）的含量在组合物总量的0.05质量％至2.0质量％的范围内，并且组合物的粘度指数为160以上。