公开(公告)号：US20160194578A1

公开(公告)日：2016-07-07

申请号：US14910883

申请日：2014-08-25

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Shuichi SAKANOUE ,  Aya AOKI

IPC: C10M169/04 ,  C10M145/14 ,  C10M105/06 ,  C10M105/32 ,  C10M101/02 ,  C10M105/04

CPC classification number: C10M169/041 ,  C10M101/02 ,  C10M105/04 ,  C10M105/06 ,  C10M105/32 ,  C10M145/14 ,  C10M2203/1006 ,  C10M2203/1025 ,  C10M2205/0285 ,  C10M2205/223 ,  C10M2207/2805 ,  C10M2209/084 ,  C10N2220/021 ,  C10N2220/022 ,  C10N2230/68 ,  C10N2230/74 ,  C10N2240/08

Abstract: Provided is a lubricating oil composition for a shock absorber, which realizes excellent riding comfort in low-temperature and high-temperature environments and can suppress worsening of riding comfort with time, which is caused by evaporation and shearing of the lubricating oil. The lubricating oil composition for a shock absorber contains (A) a base oil having a pour point of lower than −40° C. and a kinematic viscosity at 80° C. of from 2.0 to 2.7 mm2/s, (B-1) from 1 to 15% by mass of a polymethacrylate having a weight-average molecular weight of from 10,000 to less than 100,000, and (B-2) from 0.1 to 5% by mass of a polymethacrylate having a weight-average molecular weight of from 100,000 to 200,000.

Abstract translation: 提供一种用于减震器的润滑油组合物，其在低温和高温环境中实现优异的乘坐舒适性，并且可以抑制由于润滑油的蒸发和剪切而引起的乘坐舒适性的恶化。 用于减震器的润滑油组合物包含（A）倾点低于-40℃，80℃下的运动粘度为2.0-2.7mm 2 / s的基油，（B-1） 1〜15质量％的重均分子量为10,000〜100000的聚甲基丙烯酸酯，和（B-2）0.1〜5质量％的重均分子量为 100,000至20万。

公开(公告)号：US20230250357A1

公开(公告)日：2023-08-10

申请号：US18003100

申请日：2021-07-02

Applicant: Idemitsu Kosan Co.,Ltd.

Inventor： Shuichi SAKANOUE ,  Kenji KOBAYASHI

IPC: C10M169/04 ,  C10M137/10 ,  C10M135/10 ,  C10M135/34 ,  C10M141/10

CPC classification number: C10M169/04 ,  C10M137/10 ,  C10M135/10 ,  C10M135/34 ,  C10M141/10 ,  C10M2203/1025 ,  C10M2223/045 ,  C10M2219/044 ,  C10M2219/102 ,  C10N2030/36

Abstract: A lubricating oil composition may include a base oil (A), a zinc dithiophosphate (B) comprising a compound (B1) of formula (b-1), calcium sulfonate (C), and a seal sweller (D). In formula (b-1), R1 to R4 are each independently an alkyl group. However, at least one of R1 to R4 is a prescribed straight-chain alkyl group, and at least one of R1 to R4 is a prescribed branched chain alkyl group.

公开(公告)号：US20200172824A1

公开(公告)日：2020-06-04

申请号：US16630592

申请日：2018-11-07

Applicant: Idemitsu Kosan Co.,Ltd.

Inventor： Shuichi SAKANOUE ,  Tatsuya HAMACHI

IPC: C10M141/10 ,  C10M169/04 ,  C10M137/02 ,  C10M127/04 ,  C10M101/02

Abstract: Provided is a lubricating oil composition for a shock absorber, the lubricating oil composition being capable of emitting fluorescence by ultraviolet irradiation while ensuring thermal stability and abrasion resistance. This lubricating oil composition for a shock absorber contains, as components: (A) a base oil; (B) a hydrocarbon compound having a stilbene structure; and (C) a phosphite ester.

公开(公告)号：US20160369200A1

公开(公告)日：2016-12-22

申请号：US14910845

申请日：2014-08-25

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Shuichi SAKANOUE

IPC: C10M141/10

CPC classification number: C10M141/10 ,  C10M2203/1006 ,  C10M2203/1025 ,  C10M2207/026 ,  C10M2207/289 ,  C10M2209/084 ,  C10M2215/04 ,  C10M2215/082 ,  C10M2219/106 ,  C10M2223/041 ,  C10M2223/043 ,  C10M2223/045 ,  C10M2223/049 ,  C10M2223/065 ,  C10M2229/02 ,  C10N2210/02 ,  C10N2230/06 ,  C10N2230/10 ,  C10N2230/36 ,  C10N2240/08 ,  C10N2220/022

Abstract: The lubricating oil composition for a shock absorber of the present invention contains (A) a base oil containing a mineral oil and/or a synthetic oil, (B) a tertiary amine represented by the following general formula (I), (C) a zinc dithiophosphate represented by the following general formula (II), and (D) a phosphorus acid ester amine salt, wherein R1 and R2 each independently represent an aliphatic hydrocarbon group having from 1 to 5 carbon atoms, and R3 represents an aliphatic hydrocarbon group having from 12 to 24 carbon atoms, in the general formula (I), wherein R4 to R7 each independently represent one selected from an alkyl group and an alkenyl group each having from 1 to 24 carbon atoms, in the general formula (II).

Abstract translation: 本发明的减震器用润滑油组合物含有（A）含有矿物油和/或合成油的基油，（B）由以下通式（I）表示的叔胺，（C）a 由以下通式（II）表示的二硫代磷酸锌和（D）磷酸酯胺盐，其中R 1和R 2各自独立地表示具有1至5个碳原子的脂肪族烃基，R 3表示脂肪族 通式（I）中具有12至24个碳原子的烃基，其中R 4至R 7各自独立地表示选自具有1至24个碳原子的烷基和烯基，一般式 （二）。

公开(公告)号：US20190284498A1

公开(公告)日：2019-09-19

申请号：US16318399

申请日：2017-11-17

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Shuichi SAKANOUE ,  Tatsuya HAMACHI

IPC: C10M169/04 ,  C10M101/02 ,  C10M101/04 ,  C10M145/14

Abstract: To provide a lubricating oil composition having excellent viscosity characteristics and a property of difficulty in evaporation, which contains a base oil having a kinematic viscosity at 40° C. of 4.0 mm2/s or more and less than 6.0 mm2/s, a kinematic viscosity at 100° C. of 1.0 mm2/s or more and less than 2.0 mm2/s and a flash point of 140° C. or more, and a viscosity index improver, and has a Brookfield viscosity at −40° C. of 750 mPa·s or less, a kinematic viscosity at 60° C. of 5.5 mm2/s or more, and a NOACK value at 145° C. for 1 hour of 10% by mass or less.

公开(公告)号：US20190119604A1

公开(公告)日：2019-04-25

申请号：US16094693

申请日：2017-04-05

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Shuichi SAKANOUE ,  Tatsuya HAMACHI

IPC: C10M171/04 ,  C10M169/04 ,  F16F9/32

Abstract: Provided are a lubricating oil composition for shock absorber, containing a base oil and a comb polymer having a mass average molecular weight of 5×104 or more and 1×106 or less, which has a high viscosity index and provides a shock absorber capable of keeping a damping force thereof substantially constant at any temperature and exhibiting excellent damping force characteristics; a method of producing the lubricating oil composition for shock absorber; a damping method; and a shock absorber.

公开(公告)号：US20170247630A1

公开(公告)日：2017-08-31

申请号：US15329484

申请日：2015-05-22

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Shuichi SAKANOUE

IPC: C10M169/04 ,  C10M129/10 ,  C10M101/02 ,  C10M137/04

CPC classification number: C10M169/04 ,  C10M101/02 ,  C10M129/10 ,  C10M137/04 ,  C10M2203/003 ,  C10M2203/1025 ,  C10M2207/023 ,  C10M2207/026 ,  C10M2223/04 ,  C10N2230/06 ,  C10N2230/10 ,  C10N2230/36 ,  C10N2240/04

Abstract: A lubricating oil composition of the invention contains: a base oil; at least one of acid phosphate represented by formulae (1) and (2) below; and an antioxidant. In the above formulae: R1, R2 and R3 are alkyl groups; and at least one of R1 and R2 has 20 to 30 carbon atoms while R3 has 20 to 30 carbon atoms.

公开(公告)号：US20180182521A1

公开(公告)日：2018-06-28

申请号：US15759747

申请日：2016-09-15

Applicant: HONDA MOTOR CO., LTD. ,  IDEMITSU KOSAN CO., LTD.

Inventor： Kentaro KOMORI ,  Daijiro ENDO ,  Shuichi SAKANOUE ,  Seiichiro YAMAMOTO

IPC: H01F1/44 ,  C10M133/06 ,  F16F15/023

Abstract: This vibration damping device (10) includes a magnetorheological fluid composition in a cylinder (12). The magnetorheological fluid composition includes magnetic particles; a dispersant having the magnetic particles dispersed therein; and a friction modifier. The friction modifier is an amine-based additive having a hydrocarbon chain having 14 to 22 carbon atoms, preferably an alkyl chain or an alkenyl chain. The content of the friction modifier is 0.1 to 5 mass %.

公开(公告)号：US20160194576A1

公开(公告)日：2016-07-07

申请号：US14911112

申请日：2014-08-25

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Shuichi SAKANOUE ,  Aya AOKI

IPC: C10M169/04 ,  C10M129/76 ,  C10M133/16 ,  C10M101/02 ,  C10M137/10

CPC classification number: C10M169/04 ,  C10M101/02 ,  C10M129/76 ,  C10M133/16 ,  C10M137/10 ,  C10M141/10 ,  C10M2203/1006 ,  C10M2207/283 ,  C10M2207/289 ,  C10M2209/084 ,  C10M2215/082 ,  C10M2223/045 ,  C10M2229/051 ,  C10N2210/02 ,  C10N2230/02 ,  C10N2230/06 ,  C10N2230/08 ,  C10N2230/10 ,  C10N2240/08

Abstract: Provided is a lubricating oil composition for a shock absorber excellent in thermal stability and capable of reducing the friction factor for rubber. The lubricating oil composition for a shock absorber contains (A) a base oil composed of a mineral oil and/or a synthetic oil, (B) a zinc dithiophosphate represented by the following general formula (I), (C) a fatty acid amide and (D) a polyalcohol ester. In the formula, R1 to R4 each independently represent at least one selected from a linear, branched or cyclic alkyl group having from 6 to 20 carbon atoms and a linear, branched or cyclic alkenyl group having from 6 to 20 carbon atoms.

Abstract translation: 本发明提供一种热稳定性优异且能够降低橡胶摩擦系数的减震器用润滑油组合物。 用于减震器的润滑油组合物包含（A）由矿物油和/或合成油组成的基础油，（B）由以下通式（I）表示的二硫代磷酸锌，（C）脂肪酸酰胺 和（D）多元醇酯。 在该式中，R 1至R 4各自独立地表示选自具有6至20个碳原子的直链，支链或环状烷基和具有6至20个碳原子的直链，支链或环状烯基中的至少一种。

公开(公告)号：US20160186090A1

公开(公告)日：2016-06-30

申请号：US14910893

申请日：2014-08-25

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Shuichi SAKANOUE ,  Aya AOKI

IPC: C10M169/04 ,  C10M161/00 ,  C10M133/06 ,  C10M155/02 ,  C10M101/02 ,  C10M137/10

CPC classification number: C10M169/044 ,  C10M101/02 ,  C10M133/06 ,  C10M137/10 ,  C10M141/10 ,  C10M155/02 ,  C10M161/00 ,  C10M2203/1006 ,  C10M2203/1025 ,  C10M2215/04 ,  C10M2223/045 ,  C10M2229/02 ,  C10M2229/041 ,  C10M2229/051 ,  C10N2210/02 ,  C10N2230/06 ,  C10N2230/70 ,  C10N2240/08

Abstract: The lubricating oil composition for a shock absorber of the present invention contains (A) a base oil composed of a mineral oil and/or a synthetic oil, (B) a tertiary amine represented by the following general formula (I), and (C) a zinc dithiophosphate represented by the following general formula (II): wherein R1 and R2 each independently represent an aliphatic hydrocarbon group having from 1 to 5 carbon atoms, and R3 represents an aliphatic hydrocarbon group having from 12 to 24 carbon atoms in the general formula (I), wherein R4 to R7 each independently represent one selected from an alkyl group and an alkenyl group each having 1 to 24 carbon atoms in the general formula (II).

Abstract translation: 本发明的减震器用润滑油组合物含有（A）由矿物油和/或合成油构成的基油，（B）由以下通式（I）表示的叔胺和（C ）由以下通式（II）表示的二硫代磷酸锌：其中R 1和R 2各自独立地表示具有1至5个碳原子的脂族烃基，并且R 3表示一般具有12至24个碳原子的脂族烃基 式（I）中，R 4〜R 7各自独立地表示通式（II）中的碳原子数为1〜24的烷基和烯基。