| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject composition having excellent lubricity and miscibility with a hydrofluorocarbon and capable of significantly reducing wearing amount in a contact face to a metal, containing a specific lubricating oil composition and a hydrofluorocarbon. SOLUTION: This composition contains (A) a lubricating oil composition comprising (A1 ) a base oil mainly composed of an ester-based, a polyalkylene glycol-based or a carbonate-based synthetic oil, or their mixture, (A2 ) a compound of formula I [R<1> is a 2-4C (branched) alkylene; (p) is 0-30; R<2> is H, a 1-18C (branched) alkyl, a 2-18C (branched) alkenyl, etc., and is not H when (p)=0] and (A3 ) a compound of formula II [R<3> -R<6> are each H, a 1-18C (branched) alkyl, a 2-18C (branched) alkenyl, etc.; R<7> is same as R<1> (m) is 0-4, and, when (m)=0, more than one of R<3> , R<4> and R<6> are each a group except H and, when (m)=1-4, more than one of R<3> -R<6> are each a group other than H and (B) a hydrofluorocarbon. |
