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    • 41. 发明公开
    • REFRIGERATING MACHINE OIL, AND WORKING FLUID COMPOSITION FOR REFRIGERATING MACHINES
    • KÄLTEMASCHINENÖLUND ARBEITSFLUIDZUSAMMENSETZUNGFÜRKÄLTEMASCHINEN
    • EP3147345A1
    • 2017-03-29
    • EP15796869.4
    • 2015-05-11
    • JX Nippon Oil & Energy Corporation
    • KONNO Souichirou
    • C10M107/28C09K5/04C10N20/04C10N30/00C10N30/06C10N40/30
    • The present invention provides a refrigerating machine oil comprising, as a base oil, a polymer having a structural unit represented by the following formula (1):

      wherein R 1 , R 2 and R 3 , which may be the same as or different from each other, represent a hydrogen atom or a hydrocarbon group; and R 4 represents a hydrocarbon group or an organic group containing an oxygen atom, and having a number average molecular weight Mn of 300 or more and 3000 or less and a ratio of a weight-average molecular weight Mw to a number average molecular weight Mn (Mw/Mn) of 1.10 or more and 2.00 or less, and the refrigerating machine oil being used with a refrigerant selected from the group consisting of 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, unsaturated hydrofluorocarbons, hydrocarbons and carbon dioxide.
    • 本发明提供一种制冷机油,其包含作为基础油的具有由下式(1)表示的结构单元的聚合物:其中R 1,R 2和R 3可以相同或不同, 另一个表示氢原子或烃基; R 4表示烃基或含有氧原子的有机基团,数均分子量Mn为300以上且3000以下,重均分子量Mw与数均分子量Mn的比例 (Mw / Mn)为1.10以上且2.00以下,所述制冷机油与选自二氟甲烷,二氟甲烷和五氟乙烷的混合物,二氟甲烷,五氟乙烷和1,1,1-二氟甲烷的混合物的制冷剂一起使用, 五氟乙烷,1,1,1,2-四氟乙烷和1,1,1-三氟乙烷的混合物,不饱和氢氟烃,烃和二氧化碳。