公开(公告)号：US20210009884A1

公开(公告)日：2021-01-14

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

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：US20240309137A1

公开(公告)日：2024-09-19

申请号：US18571504

申请日：2022-06-14

Applicant: SANYO CHEMICAL INDUSTRIES, LTD. ,  ENEOS Corporation

Inventor： Kazuki OGATA ,  Yoshimitsu SUGIYAMA ,  Naohiro TORII ,  Satoshi GOTO ,  Yuya MIZUTANI ,  Hidetoshi OGATA ,  Yuma SEKI ,  Tatsuki NAKAJIMA

IPC: C08F220/24 ,  C10M147/04 ,  C10M171/00

CPC classification number: C08F220/24 ,  C10M147/04 ,  C10M171/008 ,  C10M2213/04

Abstract: The present invention relates to a viscosity index improver containing a copolymer (A) that contains, as essential constituent monomers, a fluorine atom-containing monomer (a) represented by the following formula (1) and a monomer (b) represented by the following formula (2),
wherein the copolymer (A) has a solubility parameter of 8.1 to 10.0 (cal/cm3)1/2, and a mass ratio (b/a) of the monomer (b) to the monomer (a) in the monomers constituting the copolymer (A) is 0.01 to 42:




wherein R1 represents a hydrogen atom or a methyl group; R2 is a C2-C4 alkylene group; p is an integer of 0 or 1; q is an integer from 0 to 20, each R2 may be the same as or different from each other when q is 2 or greater; and Y is a monovalent group in which one or more or all of hydrogen atoms in a C1-C40 hydrocarbon group are replaced by fluorine atoms, and




wherein R3 represents a hydrogen atom or a methyl group; —X1— is a group represented by —O— or —NH—; R4 is a C2-C4 alkylene group; r is an integer of 0 or 1; s is an integer from 0 to 20, and each R4 may be the same as or different from each other when s is 2 or greater; and R5 is a C1-C40 hydrocarbon group.

公开(公告)号：US20230365887A1

公开(公告)日：2023-11-16

申请号：US18266945

申请日：2021-12-20

Applicant: ENEOS Corporation

Inventor： Fumiyuki NARA ,  Yohei SHONO ,  Hidetoshi OGATA

IPC: C10M171/00 ,  C10M171/02 ,  C10M101/02 ,  C09K5/04

CPC classification number: C10M171/008 ,  C09K5/042 ,  C10M101/02 ,  C10M171/02 ,  C10N2020/02

Abstract: A refrigerating machine oil having a flash point of 130° C. or lower and a carbon residue of 10% residual oil of 0.02% by mass or more.

公开(公告)号：US20230134730A1

公开(公告)日：2023-05-04

申请号：US17920114

申请日：2021-04-27

Applicant: ENEOS CORPORATION

Inventor： Fumiyuki NARA ,  Yohei SHONO ,  Hidetoshi OGATA

IPC: C10M169/04 ,  C10M101/02 ,  C10M107/04 ,  C10M111/04 ,  C10M137/10 ,  C10M145/16 ,  C10M161/00 ,  C09K5/04

Abstract: An aspect of the present invention provides a refrigerating machine oil containing a mixed base oil of a first hydrocarbon base oil having a kinematic viscosity at 40° C. of less than 6 mm2/s and a second hydrocarbon base oil having a kinematic viscosity at 40° C. of 6 mm2/s or more, wherein a (A)/(B) ratio is more than 1 and 1.5 or less, wherein (A) is a kinematic viscosity at 40° C. of the mixed base oil, and (B) is the kinematic viscosity at 40° C. of the first hydrocarbon base oil.

公开(公告)号：US20220267696A1

公开(公告)日：2022-08-25

申请号：US17628086

申请日：2020-07-17

Applicant: ENEOS Corporation

Inventor： Satoshi NAGAI ,  Tatsuki NAKAJIMA ,  Yuya MIZUTANI ,  Hidetoshi OGATA

IPC: C10M169/04 ,  F25B1/00 ,  C10M105/16 ,  C10M145/08 ,  C09K5/04

Abstract: A method for operating a refrigerant circulation system comprising a compressor, a condenser, an expansion mechanism, and an evaporator connected in this order with piping, wherein a refrigerant comprising trifluoroiodomethane is used as a refrigerant; a refrigerating machine oil comprising, as a base oil, a polyolester synthesized from a polyhydric alcohol and fatty acids, with a proportion of a fatty acid having 9 carbon atoms in the fatty acids being 65 mol % or less is used as a refrigerating machine oil; and a temperature of an entire area of the refrigerant circulation system is kept at 160° C. or lower.

公开(公告)号：US20210324295A1

公开(公告)日：2021-10-21

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 ,  C10M137/02 ,  C10M129/18 ,  C10M105/42

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：US20230365886A1

公开(公告)日：2023-11-16

申请号：US18266948

申请日：2021-12-20

Applicant: ENEOS Corporation

Inventor： Fumiyuki NARA ,  Yohei SHONO ,  Hidetoshi OGATA

IPC: C10M169/04 ,  C10M101/02 ,  C10M137/10 ,  C09K5/04

CPC classification number: C10M169/04 ,  C10M101/02 ,  C10M137/105 ,  C09K5/042 ,  C10M2223/041 ,  C10M2223/047 ,  C10M2203/1025 ,  C10N2040/30

Abstract: A refrigerating machine oil containing a hydrocarbon base oil having a 90% distillation temperature of 270° C. or lower.

公开(公告)号：US20230250354A1

公开(公告)日：2023-08-10

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

CPC classification number: C10M129/76 ,  C09K5/045 ,  C10M169/04 ,  C10M2207/281 ,  C09K2205/126 ,  C10N2040/30 ,  C10M2207/289

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：US20230167377A1

公开(公告)日：2023-06-01

申请号：US17920121

申请日：2021-04-27

Applicant: ENEOS CORPORATION

Inventor： Hidetoshi OGATA ,  Fumiyuki NARA ,  Yohei SHONO

IPC: C10M145/14 ,  C10M169/04 ,  C10M101/02 ,  C09K5/04

CPC classification number: C10M145/14 ,  C10M169/041 ,  C10M101/02 ,  C09K5/042 ,  C10M2203/003 ,  C10M2209/084 ,  C10N2040/30

Abstract: An aspect of the present invention provides a refrigerating machine oil containing: a lubricating base oil; and a polymer containing an unsaturated carboxylic acid ester as a monomer unit, wherein the unsaturated carboxylic acid ester contains an ester of an unsaturated carboxylic acid and an alcohol having a hydrocarbon group represented by the following formula (1):




wherein x represents an integer of 5 to 18, and y represents an integer of 3 to 18.

公开(公告)号：US20220106538A1

公开(公告)日：2022-04-07

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 ,  C10M137/10 ,  C10M137/12 ,  C09K5/04

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