Patent ID: 6277901
Filing Date: 2001-08-21
Classification: C01P,C08K,C09C

Abstract:
Process for the preparation of an additive composition for rubber and rubber mixtures which contains at least one solid, powdery additive substance (a) and at least one dispersant (b), and said at least one additive substance is coated with the at least one dispersant and the composition is present as granulate or microgranulate, comprising the steps ofcoating the additive substance with the dispersant by means of a fluidized-bed,whereby in a first step creating a fluidized bed with one or more powdery additive substances comprising powder grains in a fluidized-bed reactor, andin a second step adding one or more dispersants as coating material to the fluidized bed, as a result of which the power grains are coated.