| abstract |
The invention concerns the production of extrudates with improved dispersing power by the extrusion of a solid mixture containing a plastifier and/or lubricant to produce a continuous extrusion which, on emerging from the die, is chopped by a cutting device to the required granule size. The extrudates produced have improved dispersing power if amorphous silicates are included in the solid mixture, the silicates being incorporated in the mixture (a) at least partly as solid components, water or aqueous solutions being used as plastifiers and/or lubricants, or (b) at least partly as plastifiers and/or lubricants in the form of an aqueous solution. Alternative (b) is that preferred for the method. The silicates also improve the granule stability of the extrudates. |