公开(公告)号：US20220372394A1

公开(公告)日：2022-11-24

申请号：US17761862

申请日：2020-09-24

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Yoriyuki TAKASHIMA ,  Taeko NAKANO ,  Koki HIRANO ,  Motoharu ISHIKAWA

IPC: C10M145/14 ,  C10M143/12 ,  C10M169/04 ,  C08F290/04 ,  C08F220/28 ,  C08F220/18

Abstract: An object is to provide a viscosity index improver composition that is capable of properly regulating the HTHS viscosity in the effective temperature range of a lubricating oil composition to a lower range, and a lubricating oil composition containing the viscosity index improver composition, and the viscosity index improver composition contains a comb-shaped polymer (A) containing a structural unit derived from a macromonomer (α) and a structural unit derived from a particular monomer (A1), the macromonomer (α) having a (meth)acryloyl group at one end, and having a structural unit derived from a monomer (α1) selected from butadiene and hydrogenated butadiene.

公开(公告)号：US20180044609A1

公开(公告)日：2018-02-15

申请号：US15559579

申请日：2016-03-09

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Ikuko NAKAYA ,  Yoriyuki TAKASHIMA

IPC: C10M169/04 ,  C10M145/14 ,  C10M139/00 ,  C10M133/54

CPC classification number: C10M169/044 ,  C10M133/08 ,  C10M133/54 ,  C10M139/00 ,  C10M141/12 ,  C10M145/14 ,  C10M145/38 ,  C10M2203/1025 ,  C10M2207/026 ,  C10M2207/262 ,  C10M2209/084 ,  C10M2209/109 ,  C10M2215/042 ,  C10M2215/086 ,  C10M2215/28 ,  C10M2223/045 ,  C10N2210/02 ,  C10N2220/021 ,  C10N2230/02 ,  C10N2230/04 ,  C10N2230/06 ,  C10N2230/45 ,  C10N2230/54 ,  C10N2240/104 ,  C10N2260/14 ,  C10N2220/022

Abstract: Provided is a lubricating oil composition for internal combustion engines capable of exhibit a sufficient friction-reducing effect from a low-temperature range assuming engine starting to a practical temperature range of 80° C. or higher. The lubricating oil composition for internal combustion engines contains a surfactant having an alkylene oxide as the constituent unit and having an HLB value of 7 or more and less than 15, and a lubricant base oil.

公开(公告)号：US20240124638A1

公开(公告)日：2024-04-18

申请号：US18264803

申请日：2022-02-24

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Yoriyuki TAKASHIMA ,  Taeko NAKANO ,  Shota KATO

IPC: C08F279/02 ,  C08F220/18 ,  C10M143/12 ,  C10M145/14 ,  C10M169/04

CPC classification number: C08F279/02 ,  C08F220/1804 ,  C08F220/1818 ,  C10M143/12 ,  C10M145/14 ,  C10M169/041 ,  C10N2020/04

Abstract: A polymer composition contains a comb-shaped polymer (X) containing the following structural units (a) to (c): (a): a structural unit derived from a short-chain alkyl (meth)acrylate (A) having a short-chain alkyl group having 1 to 5 carbon atoms; (b): a structural unit derived from a long-chain alkyl (meth)acrylate (B) having a long-chain alkyl group having 6 to 32 carbon atoms; and (c): a structural unit derived from a macromonomer (C), a content of the structural unit (a) being 70% by mass or more based on the total structural units of the comb-shaped polymer (X); and a hetero atom-containing base oil (Y). The hetero atom-containing base oil (Y) has a kinematic viscosity at 40° C. of 25 mm2/s or less.

公开(公告)号：US20210009918A1

公开(公告)日：2021-01-14

申请号：US17040711

申请日：2019-03-29

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Hiroaki KOSHIMA ,  Yoriyuki TAKASHIMA ,  Moritsugu KASAI

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

Abstract: 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：US20150322371A1

公开(公告)日：2015-11-12

申请号：US14652274

申请日：2013-12-18

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Hiroshi OKI ,  Yoriyuki TAKASHIMA ,  Koki ITO

IPC: C10M161/00

CPC classification number: C10M161/00 ,  C10M139/00 ,  C10M141/12 ,  C10M163/00 ,  C10M2203/1025 ,  C10M2207/262 ,  C10M2209/084 ,  C10M2215/042 ,  C10M2215/064 ,  C10M2215/28 ,  C10M2219/068 ,  C10M2223/045 ,  C10N2210/02 ,  C10N2210/06 ,  C10N2220/021 ,  C10N2230/02 ,  C10N2230/06 ,  C10N2240/10 ,  C10N2260/14 ,  C10N2270/00 ,  C10N2220/022

Abstract: A lubricant oil composition of the present invention that is prepared by blending a boron-containing compound therein, the boron-containing compound having a ratio of an integrated value of peaks in the 5 to 25 ppm chemical shift to an integrated value of peaks in the −10 ppm to 25 ppm chemical shift, as determined by 11B-NMR measurement in deuterochloroform using BF3.OEt2 as an external standard (0 ppm), of 0.5 or higher and 1.0 or lower.

Abstract translation: 本发明的润滑油组合物，其通过在其中混合含硼化合物而制备，所述含硼化合物的峰值在5至25ppm化学位移中的积分值的比值与 -10ppm至25ppm的化学位移，通过使用BF 3 OEt 2作为外部标准（0ppm）的氘氯仿中的11-NMR测定测定为0.5或更高和1.0或更低。