公开(公告)号：US20220348839A1

公开(公告)日：2022-11-03

申请号：US17763368

申请日：2020-09-23

Applicant: JTEKT CORPORATION ,  ENEOS CORPORATION

Inventor： Kazunori MIYAKE ,  Kiyomi SAKAMOTO ,  Yusuke AYAME ,  Go TATSUMI

IPC: C10M169/02 ,  C10M105/38 ,  C10M115/08

Abstract: A grease composition including: an ester base oil; and a thickener, in which the thickener contains diurea expressed by the following formula (1): R1-NHCONH-C6H4-CH2-C6H4-NHCONH-R2 (1), in which R1 and R2 each independently represents one of: (A) an alicyclic group A expressed by R3-C6H10- (R3 represents hydrogen, a 2-methyl group, a 3-methyl group, or a 4-methyl group); (B) an alkyl group B expressed by n-CmH2m+1 (m represents an integer of 6 to 10); and (C) an alkyl group C expressed by n-CmH2m+1 (m represents an integer of 16 to 20), and in which the diurea is arranged so that the alicyclic group A is 5 to 35 mol %, a total of the alicyclic group A and the alkyl group B is 55 to 95 mol %, and the remainder is the alkyl group C, based on a total of R1 and R2.

公开(公告)号：US20220204884A1

公开(公告)日：2022-06-30

申请号：US17602113

申请日：2020-04-10

Applicant: ENEOS CORPORATION

Inventor： Akira TAKAGI ,  Go TATSUMI ,  Noriko AYAME

IPC: C10M155/02 ,  C10M169/04 ,  C10M101/02 ,  C10M105/32 ,  C10M111/02 ,  C10M177/00 ,  B01D19/04

Abstract: A lubricating oil composition including: a lubricating base oil; (A) a first defoaming agent, the first defoaming agent being (A1) a first polymer, or (A2) a second polymer, or any combination thereof; and (B) a second defoaming agent, the second defoaming agent being a silicone defoaming agent, the (A1) first polymer including: a first polymer chain including a polysiloxane structure, the polysiloxane structure having a polymerization degree of 5 to 2000 and being represented by the following general formula (1); and a second polymer chain bonded with the first polymer chain, the second polymer chain including a repeating unit represented by the following general formula (2), the (A2) second polymer being a copolymer of a first monomer component and a second monomer component, the first monomer component represented by the general formula (7) or (8), the second monomer component represented by the general formula (9).

公开(公告)号：US20230323240A1

公开(公告)日：2023-10-12

申请号：US18020743

申请日：2021-08-10

Applicant: JTEKT CORPORATION ,  ENEOS CORPORATION

Inventor： Takeshi TSUDA ,  Yurie HAGINO ,  Kazumi SAKAI ,  Yusuke AYAME ,  Go TATSUMI ,  Kiyomi SAKAMOTO

IPC: C10M105/18 ,  C10M115/08 ,  C10M137/02 ,  C10M169/00 ,  C10M135/20 ,  C10M141/10 ,  C10M135/10

CPC classification number: C10M169/00 ,  C10M105/18 ,  C10M115/08 ,  C10M135/10 ,  C10M135/20 ,  C10M137/02 ,  C10M141/10 ,  C10M2207/0406 ,  C10M2215/1026 ,  C10M2219/044 ,  C10M2219/046 ,  C10M2219/08 ,  C10M2223/049 ,  C10N2030/43

Abstract: A grease composition including: a base oil; a thickener; a zinc sulfonate; a polysulfide; an overbased calcium sulfonate; and triphenyl phosphite, in which a proportion of the zinc sulfonate with respect to a total mass of the base oil and the thickener is 0.030 mass% to 0.045 mass% in terms of a zinc content, a proportion of the polysulfide with respect to the total mass of the base oil and the thickener is 0.16 mass% to 0.24 mass% in terms of a sulfur content, a proportion of the overbased calcium sulfonate with respect to the total mass of the base oil and the thickener is 0.010 mass% to 0.015 mass% in terms of a calcium content, and a proportion of the triphenyl phosphite with respect to the total mass of the base oil and the thickener is 0.24 mass% to 0.36 mass%.