公开(公告)号：US11208608B2

公开(公告)日：2021-12-28

申请号：US16343226

申请日：2017-10-20

Applicant: ENEOS Corporation

Inventor： Kentaro Yamaguchi ,  Akira Tada ,  Tatsuki Nakajima ,  Takeshi Okido ,  Hidetoshi Ogata

IPC: C10M107/28 ,  C09K5/04 ,  C09K5/08 ,  C10N20/02 ,  C10N30/02 ,  C10N40/30

Abstract: In an aspect, the present invention provides a refrigerating machine oil comprising a poly(meth)acrylate as a base oil, wherein the poly(meth)acrylate comprises a hydrogenated poly(meth)acrylate, a content of a unit having a carbon-carbon double bond present at a terminal in the poly(meth)acrylate is 6% by mole or less relative to total units constituting the poly(meth)acrylate, and a kinematic viscosity at 40° C. of the hydrogenated poly(meth)acrylate is 1 to 1000 mm2/s, the refrigerating machine oil being used with a refrigerant comprising a refrigerant selected from difluoromethane, a mixture of difluoromethane and pentafluoroethane, a mixture of difluoromethane, pentafluoroethane, and 1, 1, 1, 2-tetrafluoroethane, a mixture of pentafluoroethane, 1, 1, 1, 2-tetrafluoroethane, and 1, 1, 1-trifluoroethane, an unsaturated hydrofluorocarbon, a hydrocarbon, and carbon dioxide.

公开(公告)号：US11384271B2

公开(公告)日：2022-07-12

申请号：US16981388

申请日：2019-04-02

Applicant: ENEOS Corporation

Inventor： Kentaro Yamaguchi ,  Yuya Mizutani ,  Satoshi Nagai ,  Hidetoshi Ogata

IPC: C09K5/04 ,  C10M171/00 ,  F25B1/00 ,  C10N20/00 ,  C10N20/02 ,  C10N40/30

Abstract: One aspect of the present invention is a refrigerating machine including a refrigerant circulation system including a compressor, a condenser, an expansion mechanism, and an evaporator, and the refrigerant circulation system being filled with a refrigerant and a refrigerating machine oil, wherein the refrigerating machine oil contains: a first base oil having a compatible region with the refrigerant in a range of a temperature of 30° C. or lower and an oil ratio of 1 to 80% by mass; and a second base oil having a kinematic viscosity at 40° C. lower than the first base oil and having a narrower compatible region with the refrigerant than the first base oil.

公开(公告)号：US11001779B2

公开(公告)日：2021-05-11

申请号：US16327444

申请日：2017-09-14

Applicant: ENEOS Corporation

Inventor： Yohei Shono ,  Kentaro Yamaguchi ,  Yuya Mizutani ,  Takeshi Okido ,  Hidetoshi Ogata

IPC: C09K5/04 ,  C10M137/10 ,  C10M171/00 ,  C10M169/04 ,  C10M105/38 ,  C10N20/00 ,  C10N30/10 ,  C10N40/30

Abstract: The present invention, in one aspect, provides a refrigerating machine oil including a lubricating base oil and a compound represented by the following formula (A): wherein R1 and R2 each independently represent a monovalent hydrocarbon group, and R3 and R4 each independently represent a hydrogen atom or an alkyl group, the refrigerating machine oil being used with a refrigerant including an unsaturated hydrofluorocarbon.

公开(公告)号：US10913918B2

公开(公告)日：2021-02-09

申请号：US16092630

申请日：2017-04-14

Applicant: ENEOS Corporation

Inventor： Hiroko Shimpo ,  Kentaro Yamaguchi ,  Hidetoshi Ogata ,  Takeshi Okido

IPC: C09K5/04 ,  C10M169/04 ,  C10M145/14 ,  C10M171/00 ,  C10M105/38 ,  C10M107/24 ,  C10N20/04 ,  C10N20/00 ,  C10N30/06 ,  C10N40/30

Abstract: The present invention provides a refrigerating machine oil comprising: a lubricating base oil; and 40 mass % or less of a polymer, based on a total amount of the refrigerating machine oil, the polymer having a structural unit represented by the following formula (I) and a weight average molecular weight of from 500 to 100000. [In formula (I), Ra, Rb and Rc each independently represents a hydrogen atom or a hydrocarbon group, and Rd represents an oxygen-containing organic group or a C1-18 hydrocarbon group.]