Molding compositions comprising rubber finely dispersed in thermoplastic matrix, obtained by mixing organic solvent solutions of rubber and plastics having specific viscosity ratio

摘要

In the production of molding compositions (A) comprising a rubber (I) dispersed in a thermoplastic matrix (II), by (a) preparing (I) in an emulsion, (b) isolating (I) by coagulation followed by removal of water in one or more stages, (c) mixing (I) with an organic solvent, (d) blending the mixture (M1) with a mixture (M2) of (II) and an organic solvent, (e) removing the solvent from the obtained mixture (M3) and (f) processing the product, the ratio of the viscosity of (M1) to that of (M2) is 1:100 to 100:1. An independent claim is included for apparatus for carrying out the process, the apparatus not being specifically described in general terms in the independent claim but preferably being such that several mixtures (M3) with different (I)/(II) ratios can be prepared in step (d) and further processed separately in steps (e) and (f).