公开(公告)号：US20250163341A1

公开(公告)日：2025-05-22

申请号：US18841790

申请日：2023-02-20

Applicant: ENEOS Corporation

Inventor： Yuya MIZUTANI ,  Hidetoshi OGATA ,  Tomohiro TAKAKI ,  Takeshi OKIDO

IPC: C10M137/04 ,  C10M131/02 ,  C10M169/04 ,  C10N40/30

Abstract: An additive for a lubricating oil containing a phosphorus compound P represented by the following formula (1): wherein R1 and R2 each independently represent an alkyl group having 1 to 3 carbon atoms, and n represents an integer of 0 to 3, wherein the phosphorus compound P contains a phosphorus compound PO wherein n is 0, a phosphorus compound P1 wherein n is 1, a phosphorus compound P2 where n is 2, and a phosphorus compound P3 wherein n is 3, and a total proportion of the phosphorus compound PO and the phosphorus 10 compound P1 in the phosphorus compound P is 60% by mole or more.

公开(公告)号：US20210032558A1

公开(公告)日：2021-02-04

申请号：US16967242

申请日：2019-02-06

Applicant: ENEOS Corporation

Inventor： Yohei SHONO ,  Fumiyuki NARA ,  Takeshi OKIDO ,  Hidetoshi OGATA

IPC: C10M137/10 ,  C10M169/04 ,  C10M105/34 ,  C10M105/38 ,  C09K5/04

Abstract: One aspect of the present invention is a refrigerating machine oil containing: a base oil containing an ester of an alcohol and a fatty acid; a compound represented by the following formula (1): wherein R1 and R2 each independently represent a monovalent hydrocarbon group, R3 represents a divalent hydrocarbon group, and R4 represents hydrogen atom or a monovalent hydrocarbon group, and the refrigerating machine oil having a kinematic viscosity at 40° C. of 10 mm2/s or less.