公开(公告)号：US11760951B2

公开(公告)日：2023-09-19

申请号：US17435878

申请日：2020-02-27

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Go Watanabe

IPC: C10M115/08 ,  C10M133/06 ,  C10M133/16 ,  C10M169/02 ,  C10M169/06 ,  C10N20/02 ,  C10N20/06 ,  C10N30/06 ,  C10N40/02 ,  C10N50/10

CPC classification number: C10M115/08 ,  C10M133/06 ,  C10M133/16 ,  C10M169/02 ,  C10M169/06 ,  C10M2205/0206 ,  C10M2215/1026 ,  C10M2215/26 ,  C10M2215/28 ,  C10N2020/02 ,  C10N2020/06 ,  C10N2030/06 ,  C10N2040/02 ,  C10N2050/10

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：US12054690B2

公开(公告)日：2024-08-06

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 ,  C10M129/40 ,  C10M133/16 ,  C10M141/06 ,  C10N20/02 ,  C10N20/04 ,  C10N20/06 ,  C10N30/02 ,  C10N50/10

CPC classification number: C10M169/00 ,  C10M107/08 ,  C10M115/08 ,  C10M129/40 ,  C10M133/16 ,  C10M141/06 ,  C10M2205/0206 ,  C10M2205/0265 ,  C10M2207/126 ,  C10M2215/1026 ,  C10M2215/28 ,  C10N2020/02 ,  C10N2020/04 ,  C10N2020/06 ,  C10N2030/02 ,  C10N2050/10

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：US12264293B2

公开(公告)日：2025-04-01

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

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：US11572527B2

公开(公告)日：2023-02-07

申请号：US16634439

申请日：2018-12-20

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Go Watanabe

IPC: C10M171/02 ,  C10M169/06 ,  C10M117/02 ,  C10M135/06 ,  C10M137/10 ,  C10N40/04 ,  C10N10/02 ,  C10N20/02

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：US11254892B2

公开(公告)日：2022-02-22

申请号：US16632925

申请日：2019-01-30

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Go Watanabe

IPC: C10M169/02 ,  C10M101/00 ,  C10M115/08 ,  C10M133/06 ,  C10M133/16 ,  C10M169/04 ,  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：US11198834B2

公开(公告)日：2021-12-14

申请号：US16609308

申请日：2018-04-27

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Hiroki Sekiguchi ,  Go Watanabe

IPC: C10M169/02 ,  C10N20/02 ,  C10N40/02 ,  C10N50/10 ,  C10N40/06

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：US12043816B2

公开(公告)日：2024-07-23

申请号：US17995061

申请日：2021-03-16

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Go Watanabe

IPC: C10M169/00 ,  C10M101/02 ,  C10M105/04 ,  C10M107/02 ,  C10M111/04 ,  C10M115/08 ,  C10M135/18 ,  C10M137/08 ,  C10M137/10 ,  C10M141/10 ,  C10N20/02 ,  C10N20/04 ,  C10N20/06 ,  C10N30/06 ,  C10N40/04 ,  C10N50/10

CPC classification number: C10M169/00 ,  C10M101/02 ,  C10M105/04 ,  C10M107/02 ,  C10M111/04 ,  C10M115/08 ,  C10M135/18 ,  C10M137/08 ,  C10M137/105 ,  C10M141/10 ,  C10M2203/003 ,  C10M2203/1085 ,  C10M2205/003 ,  C10M2215/1026 ,  C10M2219/066 ,  C10M2223/043 ,  C10M2223/047 ,  C10N2020/02 ,  C10N2020/04 ,  C10N2020/06 ,  C10N2030/06 ,  C10N2040/04 ,  C10N2050/10

Abstract: A grease composition may contain a base oil (A) and a urea-based thickener (B). Particles containing the urea-based thickener (B) in the grease composition may satisfy requirement (I). The base oil (A) may be a mixed base oil containing a high-viscosity base oil (A1) having a kinematic viscosity at 40° C. of 250 mm2/s to 550 mm2/s, a low-viscosity base oil (A2) having a kinematic viscosity at 40° C. of 5.0 mm2/s to 110 mm2/s, and an ultra-high viscosity hydrocarbon-based synthetic oil (A3) having a number average molecular weight (Mn) of 2,500 to 4,500 and a kinematic viscosity at 40° C. of 25,000 mm2/s to 50,000 mm2/s. The base oil (A) may have a kinematic viscosity at 40° C. of 25 mm2/s to 105 mm2/s and a viscosity index of 120 or more. Both low-temperature characteristics and a lubricating life can be achieved.

公开(公告)号：US11746303B2

公开(公告)日：2023-09-05

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 ,  F16C33/10 ,  C10M101/02 ,  C10M107/02 ,  C10M115/08 ,  C10M129/74 ,  C10M133/12 ,  C10M141/06 ,  C10N20/06 ,  C10N30/02 ,  C10N30/10 ,  C10N30/12 ,  C10N40/02 ,  C10N50/10

CPC classification number: C10M169/00 ,  C10M101/02 ,  C10M107/02 ,  C10M115/08 ,  C10M129/74 ,  C10M133/12 ,  C10M141/06 ,  F16C33/102 ,  C10M2203/003 ,  C10M2205/0206 ,  C10M2207/283 ,  C10M2215/1026 ,  C10M2215/26 ,  C10N2020/06 ,  C10N2030/02 ,  C10N2030/10 ,  C10N2030/12 ,  C10N2040/02 ,  C10N2050/10

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：US11028335B2

公开(公告)日：2021-06-08

申请号：US16469302

申请日：2018-01-17

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Akihiro Shishikura ,  Tomonobu Takada ,  Hiroki Sekiguchi ,  Asami Koga ,  Go Watanabe ,  Harutomo Ikeda

IPC: C10M169/00 ,  C10M101/02 ,  C10M117/02 ,  C10M117/06 ,  C10M125/10 ,  C10M129/08 ,  C10M133/42 ,  C10M141/06 ,  C10M135/06 ,  C10N20/02 ,  C10N30/00 ,  C10N50/10

Abstract: Provided is a grease composition which is excellent in fire extinguishing performance without water and can suppress fuming, malodor, and liquefaction on burning and a method for producing the grease composition.
A grease composition contains a base oil (A), a thickener (B), and a fire retardant (C), wherein the base oil (A) contains a base oil (A1) having a 40° C. kinematic viscosity of 300 mm2/s or more, a sulfur content of 20 ppm by mass or less, and an initial boiling point of 400° C. or higher, the fire retardant (C) is at least one of aluminum hydroxide (C1) and 1,3,5-triazine-1,3,5 (2H, 4H, 6H)-tris(ethanol) (C2), and a content of the fire retardant (C) is 1.0 to 12.0 mass % based on a total amount of the grease composition.