公开(公告)号：US11485926B2

公开(公告)日：2022-11-01

申请号：US17423636

申请日：2020-01-21

Applicant: ENEOS CORPORATION

Inventor： Yohei Shono ,  Tatsuki Nakajima ,  Shogo Hashimoto ,  Yuya Mizutani ,  Hidetoshi Ogata

IPC: C10M137/10 ,  C10M137/08 ,  C10M107/32 ,  C10M169/04 ,  C10N30/06 ,  C10N40/30 ,  C10N70/00

Abstract: The present invention provides a refrigerating machine oil comprising a lubricating base oil and at least one selected from the group consisting of an amine salt of phosphonic acid and an amine salt of phosphonic acid monoester, and a method for producing the same.

公开(公告)号：US12258531B2

公开(公告)日：2025-03-25

申请号：US18013418

申请日：2021-07-07

Applicant: ENEOS CORPORATION

Inventor： Tatsuki Nakajima ,  Shogo Hashimoto ,  Hidetoshi Ogata ,  Yuma Seki

IPC: C10M129/76 ,  C09K5/04 ,  C10M169/04 ,  C10N40/30

Abstract: One aspect of the present invention is a refrigerating machine oil containing: a base oil; and a partial ester of a carboxylic acid and a polyhydric alcohol, wherein the carboxylic acid contains an unsaturated carboxylic acid.

公开(公告)号：US12091629B2

公开(公告)日：2024-09-17

申请号：US17915262

申请日：2021-03-12

Applicant: ENEOS CORPORATION

Inventor： Satoshi Nagai ,  Tatsuki Nakajima ,  Yuya Mizutani ,  Hidetoshi Ogata

IPC: C10M105/38 ,  C09K5/04 ,  C10N30/10 ,  C10N40/30

CPC classification number: C10M105/38 ,  C09K5/045 ,  C10M2207/042 ,  C10N2030/10 ,  C10N2040/30

Abstract: An aspect of the present invention provides a refrigerating machine oil containing an ester-based base oil, at least one epoxy compound selected from an alkyl glycidyl ether and an aryl glycidyl ether, and a phenol-based antioxidant, wherein a content of the epoxy compound is 0.7% by mass or more based on a total amount of the refrigerating machine oil, and the refrigerating machine oil is used with a refrigerant containing trifluoroiodomethane.

公开(公告)号：US11993742B2

公开(公告)日：2024-05-28

申请号：US17621847

申请日：2020-06-17

Applicant: ENEOS Corporation

Inventor： Satoshi Nagai ,  Tatsuki Nakajima ,  Yuya Mizutani ,  Hidetoshi Ogata

IPC: C09K5/04 ,  C10M105/38 ,  C10M105/46 ,  C10N40/30

CPC classification number: C09K5/044 ,  C10M105/38 ,  C10M105/46 ,  C09K2205/12 ,  C09K2205/24 ,  C10M2207/2835 ,  C10M2207/3045 ,  C10N2040/30

Abstract: A working fluid composition for a refrigerating machine, containing: a refrigerant containing trifluoroiodomethane; and a refrigerating machine oil containing a complex ester synthesized from a polyhydric alcohol, a polybasic acid, and at least one selected from a monohydric alcohol and a monocarboxylic fatty acid.

公开(公告)号：US11680220B2

公开(公告)日：2023-06-20

申请号：US17426156

申请日：2020-01-21

Applicant: ENEOS Corporation

Inventor： Yohei Shono ,  Tatsuki Nakajima ,  Shogo Hashimoto ,  Hidetoshi Ogata

IPC: C10M173/02 ,  C10M137/02 ,  C10M169/04 ,  C10N40/30

CPC classification number: C10M137/02 ,  C10M169/04 ,  C10M2203/003 ,  C10M2223/049 ,  C10N2040/30

Abstract: The present invention provides a method for producing a refrigerating machine oil, comprising blending a hydrocarbyl hydrogen phosphite having an acid value of 100 mgKOH/g or less with a lubricating base oil or an oil composition containing a lubricating base oil, and a refrigerating machine oil obtained by the method.

公开(公告)号：US12091606B2

公开(公告)日：2024-09-17

申请号：US17623424

申请日：2020-06-17

Applicant: ENEOS Corporation

Inventor： Satoshi Nagai ,  Tatsuki Nakajima ,  Yuya Mizutani ,  Hidetoshi Ogata

IPC: C09K5/04 ,  C10M107/32 ,  C10M129/10 ,  C10M129/18 ,  C10M129/40 ,  C10M169/04 ,  C10N30/10 ,  C10N40/30

CPC classification number: C09K5/044 ,  C10M107/32 ,  C10M129/10 ,  C10M129/18 ,  C10M129/40 ,  C10M169/04 ,  C09K2205/10 ,  C10M2207/023 ,  C10M2207/042 ,  C10M2207/126 ,  C10M2209/1023 ,  C10M2215/064 ,  C10N2030/10 ,  C10N2040/30

Abstract: A working fluid composition for a refrigerating machine, containing: a refrigerant containing trifluoroiodometbane; and a refrigerating machine oil containing a polyol ester and a hindered phenol compound, wherein a content of the hindered phenol compound is 0.6 to 10% by mass based on a total amount of the refrigerating machine oil.

公开(公告)号：US11453839B2

公开(公告)日：2022-09-27

申请号：US17270179

申请日：2019-08-27

Applicant: ENEOS Corporation

Inventor： Yohei Shono ,  Tatsuki Nakajima ,  Shogo Hashimoto ,  Hidetoshi Ogata

IPC: C10M171/00 ,  C10M105/42 ,  C10M129/18 ,  C10M137/02 ,  C10N20/00 ,  C10N40/30

Abstract: The present invention provides a refrigerating machine oil containing a lubricating base oil, a dialkyl hydrogen phosphite having two alkyl groups having 1 to 12 carbon atoms in the molecule, and an epoxy compound.

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：US12252662B2

公开(公告)日：2025-03-18

申请号：US17428439

申请日：2020-02-19

Applicant: ENEOS Corporation

Inventor： Yohei Shono ,  Tatsuki Nakajima ,  Shogo Hashimoto ,  Yuya Mizutani ,  Hidetoshi Ogata

IPC: C10M169/04 ,  C09K5/04 ,  C10M137/10 ,  C10M137/12 ,  C10N30/06 ,  C10N40/30

Abstract: One aspect of the present invention is a refrigerating machine oil comprising a base oil, a dithiophosphoric acid ester, and a phosphonate ester.

公开(公告)号：US12247177B2

公开(公告)日：2025-03-11

申请号：US17422948

申请日：2020-02-19

Applicant: ENEOS Corporation

Inventor： Yohei Shono ,  Tatsuki Nakajima ,  Shogo Hashimoto ,  Yuya Mizutani ,  Hidetoshi Ogata

IPC: C10M169/04 ,  C09K5/04 ,  C10M137/08 ,  C10M137/10 ,  C10N40/30

Abstract: One aspect of the present invention is a refrigerating machine oil comprising a base oil, a dithiophosphoric acid ester, and an amine salt of an acidic phosphoric acid ester.