Title:
潤滑油組成物および潤滑油の消泡方法、ならびに消泡剤組成物
Document Type and Number:
Japanese Patent JP7457003
Kind Code:
B2
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). Q8-Z8-Y8 (9)
Inventors:
Akira Takagi
Tsuyoshi Tatsumi
Noriko Iris
Tsuyoshi Tatsumi
Noriko Iris
Application Number:
JP2021513720A
Publication Date:
March 27, 2024
Filing Date:
April 10, 2020
Export Citation:
Assignee:
ENEOS Co., Ltd.
International Classes:
C10M155/02; B01D19/04
Domestic Patent References:
| JP4220599B2 | ||||
| JP59130894A | ||||
| JP9118892A |
Foreign References:
| WO2018155579A1 | ||||
| WO2017030201A1 |
Attorney, Agent or Firm:
Noriaki Yamamoto
Akihiko Yamashita
Tatsuto Kishimoto
Akihiko Yamashita
Tatsuto Kishimoto