| abstract |
(57) [Summary]nPROBLEM TO BE SOLVED: To prevent viscosity reduction even at high temperature. A novel polyorganosiloxane fluid is provided.nAn average unit formula (R ) a SiO (4-a) / 2 n(In the formula, R is a monovalent hydrocarbon group or halogenated hydrocarbon water. Elementary group, a is represented by a number of 1.9 to 2.1) and has a viscosity of 25 ° C. 500 to 500,000 mm Two / S polyorgano A base oil composed of roxane fluid, IIA in the periodic table, IIIA, IVA, VA, VIA, VIIA, VII Oxidation compounds of elements of groups I, IB, IIB and IIIB At least one component selected from 0.01 to 10. It is contained at a rate of 0 mass%. |