公开(公告)号：US20240174943A1

公开(公告)日：2024-05-30

申请号：US18552377

申请日：2022-03-31

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Go WATANABE ,  Keisuke INDA ,  Kouji TAKANE

IPC: C10M169/06 ,  C10N20/02 ,  C10N20/06 ,  C10N30/06 ,  C10N50/10

CPC classification number: C10M169/06 ,  C10M2215/30 ,  C10M2217/0456 ,  C10N2020/02 ,  C10N2020/06 ,  C10N2030/06 ,  C10N2050/10

Abstract: A grease composition, containing a base oil (A), a urea-based thickener (B), and melamine cyanurate (C). Particles containing the urea-based thickener (B) in the grease composition satisfy the following requirement (I): the particles have an area-based arithmetic average particle diameter of 2.0 μm or less, as measured by a laser diffraction/scattering method.

公开(公告)号：US20230124121A1

公开(公告)日：2023-04-20

申请号：US17907371

申请日：2021-03-16

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Go WATANABE

IPC: C10M169/00 ,  C10M107/08 ,  C10M115/08 ,  C10M133/16 ,  C10M129/40 ,  C10M141/06

Abstract: A grease composition which contains a base oil (A), a urea-based thickener (B), a sarcosine derivative (C), and a fatty acid zinc salt (D), wherein particles containing the urea-based thickener (B) in the grease composition satisfies Requirement (I). The base oil (A) is a blended base oil containing a high viscosity hydrocarbon-based synthetic oil having a specific kinematic viscosity (A1). A low viscosity hydrocarbon-based synthetic oil having a specific kinematic viscosity (A2). An ultra-high viscosity hydrocarbon-based synthetic oil has a number average molecular weight (Mn) of 2,500 to 4,500 and a specific kinematic viscosity (A3). A 40° C. kinematic viscosity of the base oil (A) is 500 mm2/s to 1,500 mm2/s. A viscosity index of the base oil (A) is 140 or more. A content of the fatty acid zinc salt (D) is 10 mass % to 20 mass % based on a total amount of the grease composition.

公开(公告)号：US20200208075A1

公开(公告)日：2020-07-02

申请号：US16634439

申请日：2018-12-20

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Go WATANABE

IPC: C10M171/02 ,  C10M169/06

Abstract: Provided is a grease composition which contains (A) a mixed base oil containing (A1) a low-viscosity base oil having a kinematic viscosity at 40° C. of 10 to 50 mm2/s and (A2) a high-viscosity base oil having a kinematic viscosity at 40° C. of 200 to 700 mm2/s, (B) a lithium-based thickener and (C) a polymer having a kinematic viscosity at 100° C. of 1,000 to 100,000 mm2/s, and has an apparent viscosity at −10° C., as measured according to JIS K2220:2013 and at a shear rate of 10 s−1, of 50 to 250 mPa·s. The grease composition is excellent in pumpability and is also excellent in wear resistance under poor lubrication conditions.

公开(公告)号：US20200048574A1

公开(公告)日：2020-02-13

申请号：US16609308

申请日：2018-04-27

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Hiroki SEKIGUCHI ,  Go WATANABE

IPC: C10M169/02

Abstract: Provided is a grease composition including a base oil (A) containing an alkyl naphthalene (A1) and an aliphatic diurea (B) represented by general formula (b1): R1—NHCONH—R3—NHCONH—R2  (b1) (wherein, R1 and R2 each independently represent a monovalent aliphatic hydrocarbon group having 9 to 20 carbon atoms, and R3 represents a divalent aromatic hydrocarbon group having 6 to 18 carbon atoms),wherein a content of the aliphatic diurea (B) is 20 to 30% by mass based on a total amount of the grease composition.

公开(公告)号：US20220145203A1

公开(公告)日：2022-05-12

申请号：US17435878

申请日：2020-02-27

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Go WATANABE

IPC: C10M115/08 ,  C10M169/02 ,  C10M169/06 ,  C10M133/06 ,  C10M133/16

Abstract: The present invention addresses a problem of providing a grease composition containing a urea-based thickener and capable of appropriately maintaining the kinematic friction force in lubrication parts. The grease composition contains a base oil (A) and a urea-based thickener (B), wherein the base oil (A) has a kinematic viscosity at 40° C. of 100 mm2/s or more, and the particles containing the urea-based thickener (B) in the grease composition satisfy the following requirement (I). Requirement (I): the area-based arithmetic average particle diameter of the particles is 2.0 μm or less, as measured by a laser diffraction/scattering method.

公开(公告)号：US20210095219A1

公开(公告)日：2021-04-01

申请号：US16627861

申请日：2018-08-22

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Go WATANABE ,  Akihiro SHISHIKURA ,  Asami KAGA

IPC: C10M115/08 ,  C10M129/76

Abstract: A grease composition containing a base oil (A), a urea-based thickener (B), an antioxidant (C), and a rust inhibitor (D), wherein in a particle size distribution curve obtained by measuring the particle size of particles containing the urea-based thickener (B) in the grease composition on a volume basis with light scattering, a peak indicating the maximum frequency satisfies the following Requirements (I) and (II): (I) a particle size indicating the maximum frequency of the peak is 1.0 μm or less; and (II) a half width of the peak is 1.0 μm or less.

公开(公告)号：US20200148970A1

公开(公告)日：2020-05-14

申请号：US16632925

申请日：2019-01-30

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Go WATANABE

IPC: C10M169/02 ,  C10M133/16 ,  C10M115/08 ,  C10M101/00 ,  C10M169/04 ,  C10M133/06 ,  C10N20/06

Abstract: The present invention relates to a grease composition containing a base oil (A), a thickener (B), and an additive (C) composed of at least two selected from a sarcosine derivative (C1), an amine compound (C2), and an amide compound (C3), wherein the content of the component (C) is 0.1 to 10.0% by mass on a basis of the total amount of the grease composition.

公开(公告)号：US20240318092A1

公开(公告)日：2024-09-26

申请号：US18574588

申请日：2022-06-29

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Go WATANABE

IPC: C10M115/08 ,  C10M169/02 ,  C10M169/06 ,  C10N20/00 ,  C10N20/02 ,  C10N20/06

CPC classification number: C10M115/08 ,  C10M169/02 ,  C10M169/06 ,  C10M2215/1026 ,  C10N2020/019 ,  C10N2020/02 ,  C10N2020/06

Abstract: Provided is a grease composition containing a base oil (A), a urea-based thickener (B), and a hardening agent for fat and/or fatty oil (C), in which particles containing the urea-based thickener (B) in the grease composition satisfy the following requirement (I), liquefy when heated to a certain temperature or higher, return to a solid state when returned to ordinary temperature after heated to a certain temperature or higher, have high responsiveness to application of shear stress, and are easily softened when shear stress is applied.
Requirement (I): an arithmetic average particle diameter of the particles on an area basis as measured by a laser diffraction and scattering method is 2.0 μm or less.

公开(公告)号：US20220073837A1

公开(公告)日：2022-03-10

申请号：US17423252

申请日：2020-01-31

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Kouji TAKANE ,  Go WATANABE ,  Akihiro SHISHIKURA ,  Jun YAMASHITA

IPC: C10M169/00 ,  C10M107/02 ,  C10M101/02 ,  C10M115/08 ,  C10M133/12 ,  C10M129/74 ,  C10M141/06 ,  F16C33/10

Abstract: The present invention relates to a grease composition which can impart excellent durability to a bearing used under a high-speed rotation condition with a DN value of 100,000 or more, wherein the grease composition contains a base oil (A) and a urea-based thickener (B), and particles containing the urea-based thickener (B) in the grease composition satisfy requirement (I) that the particles have an arithmetic mean particle diameter of 2.0 μm or less on an area basis when measured by a laser diffraction scattering method. The grease composition is used for a bearing used under a high-speed rotation condition with a DN value of 100,000 or more.

公开(公告)号：US20240174942A1

公开(公告)日：2024-05-30

申请号：US18550984

申请日：2022-03-31

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Keisuke INDA ,  Go WATANABE ,  Kouji TAKANE

IPC: C10M169/02 ,  C10M115/08 ,  C10M143/04 ,  C10M169/06 ,  C10M171/06 ,  C10N20/02 ,  C10N20/04 ,  C10N40/04

CPC classification number: C10M169/02 ,  C10M115/08 ,  C10M143/04 ,  C10M169/06 ,  C10M171/06 ,  C10M2205/024 ,  C10M2215/28 ,  C10M2290/10 ,  C10N2020/02 ,  C10N2020/04 ,  C10N2040/04

Abstract: A grease composition, containing a base oil (A), a urea-based thickener (B), and a polymer compound (C). The particles that make up the urea-based thickener (B) in the grease composition satisfy the following requirement (I): the particles have an arithmetic average particle diameter on an area basis as measured by a laser diffraction/scattering method of 2.0 μm or less, and the polymer compound (C) has a number average molecular weight (Mn) of 30,000 or more and a molecular weight distribution (Mw/Mn) of 2.20 or less.