| 摘要 |
PURPOSE:The titled composition that is prepared by adding an alkylene oxide adduct to a mixture of natural fat and polyhydroxy compound to machine oil, thus showing synergism in controlling effect with inhibition of chemical injury, as the feature of the machine oil (no anxiety of development of resistance) is well utilized. CONSTITUTION:(A) An alkylene oxide adduct to a mixture containing 1mol of a natually occurring fat and up to 3mol, preferably 0.1-1.5mol of a polyhydroxy compound, preferably a 5-40mol oxide adduct to 1mol of the mixture, is combined with (B) a machine oil, which has a dynamic viscosity of 7-30cst at 50 deg.C, an aniline point of over 90 deg. and a sulfonation value of 1-20%, at a weight ratio A/B of (5-30)/(95-70). As the polyhydroxy compound, is preferably cited a compound having 2-6 carbon atoms and 2-6 hydroxyl groups, which do not exceed the number of carbon atoms and much preferably glycerol as a C3 compound. |
