SILICONE POLYMER-COATED POWDER OR PARTICULATE MATERIAL

摘要

A modified powder or particulate material having a silicone polymer film coated on substantially the entire surface thereof, this powder of particulate material being produced by bringing at least one silicone compound, in the form of a vapour, having the general formula (I): (R<1>HSiO)a(R<2>R<3>SiO)b(R<4>R<5>R<6>SiO1/2 )c (I) wherein R<1>, R<2>, and R<3> represent, independently, hydrogen or a hydrocarbon residue having 1 to 10 carbon atoms, which may be substituted with at least one halogen atom, provided that R<1>, R<2>, and R<3> are not hydrogen at the same time, R<4>, R<5>, and R<6> represent, independently, hydrogen or a hydrocarbon residue having 1 to 10 carbon atoms, which may be substituted with at least one halogen atom, a is zero or an integer of 1 or more, b is zero or an integer of 1 or more, and c is zero or 2, provided that c is 2 when a and b are simultaneously zero and a + b is an integer of 3 or more when c is zero, into contact with a powder or particulate material having an active site on the surface thereof, whereby the silicone compound is polymerized on substantially the entire surface of the powder or particulate material.