Continuous process for making storage stable organopolysiloxane compositions

摘要

A process for the production of organopolysiloxane compositions by mixing and kneading (A) organo-polysiloxanes containing at least 2 silicon-bonded unsaturated aliphatic hydrocarbon groups, hydrogen atoms and/or hydroxyl groups per molecule with (B) hydrophobically coated oxide-type reinforcing fillers with a carbon content of at least 0.5 wt% arising from the coating process. Mixing/kneading is carried out in a kneader (1) with at least two chambers (2) in series, each containing two synchronous or contra-rotating kneaders (3) with parallel axes (4) and connected by means of traversable openings (5) at right angles to the axes (4), and with a feeder opening (6) and a discharge opening (7) in the first and last compartments respectively.