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：US20230159848A1

公开(公告)日：2023-05-25

申请号：US17922870

申请日：2021-06-04

Applicant: ENEOS CORPORATION

Inventor： Akira TAKAGI ,  Noriko AYAME

IPC: C10M157/10 ,  C10M169/04 ,  C10M145/16 ,  C10M145/14 ,  C10M155/02

CPC classification number: C10M157/10 ,  C10M169/041 ,  C10M145/16 ,  C10M145/14 ,  C10M155/02 ,  C10M2203/003 ,  C10M2229/041 ,  C10M2229/051 ,  C10M2209/086 ,  C10M2209/084 ,  C10N2030/18

Abstract: A defoaming agent obtainable by a process that includes: polymerizing (A) at least one polymerizable monomer in a composition, the composition comprising (C) a solvent and (B) at least one non-polymerizable polysiloxane dissolved in the (C) solvent, wherein the component (A) optionally comprises at least one Si-atom-containing monomer in an amount of less than 10 mass % on the basis of the total mass of the component (A).