Process for the continuous preparation of two-component addition-crosslinking silicone compositions

A process for the continuous preparation of addition-crosslinking silicone rubber derived from a base composition comprising at least one polyvinyl polysiloxane with at least 10% by weight, based on the weight of the liquid silicone rubber, of hydrophobicized filler, comprising:

• removing the base composition from a container whose volume reduces proportionally with the amount of base composition removed, and conveying the composition by way of a pump with a positive pressure difference to two further pumps which divide the base composition into two streams and convey the streams of base composition onward,
• continuously preparing a component A by admixing at least one metal catalyst with a first stream of base composition, and
• continuously and simultaneously preparing a component B by admixing a crosslinker and inhibitor to the second stream of base composition,
• where the metal catalyst, crosslinker, and inhibitor are fed into the respective streams by way of a feed unit which meters in each of the substances.