LUBRICATING OIL COMPOSITION FOR REFRIGERATORS

    公开(公告)号:US20220364007A1

    公开(公告)日:2022-11-17

    申请号:US17761473

    申请日:2020-09-18

    Inventor: Tomoya MATSUMOTO

    Abstract: A lubricating oil composition may be suitable for a refrigerator and have excellent thermal stability when used with a refrigerant using difluoromethane (R32), trifluoroiodomethane (CF3I), and at least one selected from saturated fluorinated hydrocarbon compounds (HFC) other than difluoromethane (R32). Such compositions may include: a base oil (A) with at least one selected from a polyoxyalkylene glycol, a polyvinyl ether, a copolymer of a poly(oxy)alkylene glycol or a monoether thereof and a polyvinyl ether, and a polyol ester; and an aliphatic epoxy compound (B), wherein the content of the aliphatic epoxy compound (B) is more than 2.0% by mass based on the total amount of the lubricating oil composition.

    GREASE COMPOSITION AND ROLLING BEARING

    公开(公告)号:US20220348839A1

    公开(公告)日:2022-11-03

    申请号:US17763368

    申请日:2020-09-23

    Abstract: A grease composition including: an ester base oil; and a thickener, in which the thickener contains diurea expressed by the following formula (1): R1-NHCONH-C6H4-CH2-C6H4-NHCONH-R2 (1), in which R1 and R2 each independently represents one of: (A) an alicyclic group A expressed by R3-C6H10- (R3 represents hydrogen, a 2-methyl group, a 3-methyl group, or a 4-methyl group); (B) an alkyl group B expressed by n-CmH2m+1 (m represents an integer of 6 to 10); and (C) an alkyl group C expressed by n-CmH2m+1 (m represents an integer of 16 to 20), and in which the diurea is arranged so that the alicyclic group A is 5 to 35 mol %, a total of the alicyclic group A and the alkyl group B is 55 to 95 mol %, and the remainder is the alkyl group C, based on a total of R1 and R2.

    REFRIGERATION CYCLE APPARATUS
    10.
    发明申请

    公开(公告)号:US20220282145A1

    公开(公告)日:2022-09-08

    申请号:US17763524

    申请日:2020-09-04

    Abstract: A refrigeration cycle apparatus includes a refrigerant that is R466A, a compressor that compresses the refrigerant, and a refrigeration machine oil that includes a base oil containing polyolester and that lubricates the compressor, wherein a kinematic viscosity of the refrigeration machine oil at 40° C. is 1.05 times or higher than and 1.50 times or lower than a kinematic viscosity of an other refrigeration machine oil at 40° C. that includes a base oil containing polyolester, the other refrigeration machine oil appropriately lubricating the compressor in an other refrigeration cycle apparatus including R410A as a refrigerant when the R410A is compressed by the compressor.

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