公开(公告)号：US20230313066A1

公开(公告)日：2023-10-05

申请号：US18013485

申请日：2021-07-14

Applicant: JTEKT CORPORATION

Inventor： Junya MATSUYAMA ,  Kanako NIIYA ,  Takeshi YAMAMOTO

IPC: C10M169/02 ,  C10M105/36 ,  C10M107/18 ,  C10M115/08 ,  C10M177/00

CPC classification number: C10M169/02 ,  C10M105/36 ,  C10M107/18 ,  C10M115/08 ,  C10M177/00 ,  C10M2290/10 ,  C10M2290/04 ,  C10M2215/1026 ,  C10M2205/0206 ,  C10M2207/2855 ,  C10N2020/06

Abstract: A method for producing a raw material of grease, including: preparing first thickener raw material; second thickener raw material; first lubricating oil; second lubricating oil; first solvent with a boiling point lower than those of the oils, dissolves the first oil, and does not dissolve a produced thickener; and a second solvent with a boiling point lower than those of the oils, dissolves the second oil, and does not dissolve the produced thickener; dissolving the first lubricating oil in the first solvent, and dissolving or dispersing the first thickener raw material in the first solvent to obtain a first mixed solution; dissolving the second lubricating oil in the second solvent, and dissolving or dispersing the second thickener raw material in the second solvent to obtain a second mixed solution; and mixing the first and second mixed solutions, and reacting the first and second thickener raw materials producing a thickener.

公开(公告)号：US20240327742A1

公开(公告)日：2024-10-03

申请号：US18579569

申请日：2022-06-29

Applicant: JTEKT CORPORATION

Inventor： Kanako TAKAHARA NIIYA ,  Junya MATSUYAMA

IPC: C10M105/68 ,  C10M119/02 ,  C10M123/04 ,  C10N20/06 ,  C10N50/10 ,  C10N70/00

CPC classification number: C10M105/68 ,  C10M119/02 ,  C10M123/04 ,  C10M2205/046 ,  C10M2215/1026 ,  C10N2020/06 ,  C10N2050/10 ,  C10N2070/00

Abstract: A grease composition includes a base oil and a thickener. The thickener contains a urea compound and a styrene-based polymer. A content of the styrene-based polymer is 2% by mass or more and 30% by mass or less as to a total amount of the urea compound and the styrene-based polymer. In the thickener, an average value of diameter of particles with a diameter of 0.2 μm or more is 0.2 μm or more and 1.0 μm or less.