公开(公告)号：US20230227747A1

公开(公告)日：2023-07-20

申请号：US18006166

申请日：2021-09-30

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Genki OKUYAMA ,  So NAKAJIMA

IPC: C10M137/08 ,  C10M101/02 ,  C10M169/04 ,  C09K5/04

CPC classification number: C10M137/08 ,  C10M101/02 ,  C10M169/04 ,  C09K5/042 ,  C10M2203/1065 ,  C10M2223/043 ,  C10M2223/049 ,  C10N2020/02

Abstract: A refrigeration machine oil composition may have good lubricating properties and sufficiently reduce friction even when a base oil containing a low-viscosity mineral oil is used and/or prevent seizure between sliding members. Such refrigeration machine oil compositions may contain a base oil containing a mineral oil, (A) at least one type selected from a specific neutral phosphate ester and an amine salt thereof, and (B) at least one type selected from a specific acidic phosphate ester, an acidic phosphite ester, and an amine salt thereof, and having a kinematic viscosity at 40° C. in a range of from 1.0 to 6.0 mm2/s.

公开(公告)号：US20220081513A1

公开(公告)日：2022-03-17

申请号：US17418083

申请日：2019-12-26

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： So NAKAJIMA ,  Yukio YOSHIDA

IPC: C08G65/331 ,  C08G65/16 ,  C08K11/00 ,  C10M107/34 ,  C07C43/215 ,  C07C43/178 ,  C07C43/15 ,  C10M169/04

Abstract: A polyalkylene glycol-based compound of formula (1): may be one in which R1 is a monovalent hydrocarbon group having 1 to 32 carbon atoms, a monovalent aromatic hydrocarbon group having 6 to 42 ring carbon atoms, a monovalent acyl group having 2 to 32 carbon atoms, or a monovalent oxygen-containing hydrocarbon group having 2 to 32 carbon atoms; R2 is a monovalent hydrocarbon group having 1 to 32 carbon atoms, a monovalent aromatic hydrocarbon group having 6 to 42 ring carbon atoms, a monovalent acyl group having 2 to 32 carbon atoms, a monovalent oxygen-containing hydrocarbon group having 2 to 32 carbon atoms, or a hydrogen atom; R3 is a divalent hydrocarbon group having 4 carbon atoms; R4 is a divalent hydrocarbon group having 2 or 3 carbon atoms; m and n are respectively numbers between 1 and 40 and 0 and 20; and m/(m+n)≥0.5.

公开(公告)号：US20190256789A1

公开(公告)日：2019-08-22

申请号：US16318432

申请日：2017-12-19

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： So NAKAJIMA ,  Tomoya MATSUMOTO

IPC: C10M107/24 ,  C08F16/18 ,  C10M169/04 ,  C09K5/04

Abstract: The present invention relates to a refrigerator oil containing a polyvinyl ether-based compound (A) containing a structural unit (a1) having a methoxy group in a side chain thereof in an amount of 30 mol % or more and 100 mol % or less on a basis of 100 mol % of the whole amount of structural units excluding a terminal structural unit in a molecular structure thereof, a refrigerator oil composition containing the refrigerator oil, and a production method of the refrigerator oil.

公开(公告)号：US20180291247A1

公开(公告)日：2018-10-11

申请号：US15573944

申请日：2016-05-23

Applicant: IDEMITSU KOSAN CO., LTD.

Inventor： Tadashi KISEN ,  Izumi TERADA ,  Mitsuru SHIBATA ,  Tomoya MATSUMOTO ,  So NAKAJIMA

IPC: C09K5/04 ,  C10M107/24

Abstract: The refrigerator oil of the present invention is a refrigerator oil for a refrigerant including difluoromethane (R32), which contains a polyvinyl ether-based compound (A) including a constitutional unit (a1) having a methoxyethyl group in a side chain thereof.