Abstract: A process for inhibiting agglutination in an upright duct when particles are introduced, where at least some parts of the walls of the upright duct are wetted with a film of liquid, and where the liquid used includes a dispersing agent or solvent appropriate for the rubber.

Abstract: The invention relates to a process for inhibiting agglutination in a upright duct when particles are introduced, where at least some parts of the walls of the upright duct are wetted with a film of liquid, and also to an apparatus for carrying out the process, embracing an anterior panel (10), at least part of which is composed of a porous sheet and which has been arranged in front of at least part of the walls of the upright duct (2a, 2b) and which forms with these a chamber (11) which can be filled with a liquid, where the apparatus also embraces a feed (9), and/or to tubes (5) which can be inserted, freely suspended, into an upright duct and can be filled with a liquid, and which have been arranged along the walls of the upright duct (2a, 2b) and have a feed (6) and have discharge openings (7).

Abstract: An impact-resistant thermoplastic molding material which contains, based in each case on A+B, from 80 to 50% by weight of a hard matrix A of polystyrene having a molecular weight M.eta. of from 150,000 to 200,000 and from 50 to 20% by weight of a soft phase B which is uniformly distributed in the hard matrix and has a median particle diameter d.sub.50 (volume average) of from 1 to 10 .mu.m, and can be obtained by polymerizing styrene in the presence of an elastomeric grafting base, advantageously has a molecular weight of the grafted branches of from 1.1 to 1.35 times the molecular weight of the hard matrix, and the degree of grafting is from 50 to 100%.

Abstract: A thermoplastic molding material contains, in each case based on the molding material comprising A+B,A from 80 to 60% by weight of a hard matrix composed of polystyrene andB from 20 to 40% by weight of a soft phase which is obtainable by polymerization of styrene in the presence of a linear styrene/butadienne block copolymer which has an ill defined transition, contains from 35 to 45% by weight of styrene and from 65 to 55% by weight of butadiene and has a block polystyrene content of from 25 to 35% by weight, the soft phase being uniformly distributed in the hard matrix and having a particle diameter of less than 0.8 .mu.m.The typical features of the said molding material are that the median particle diameter d.sub.50 (volume average of the soft phase B is from 0.25 to 0.38 .mu.m, the width of the particle size distribution, (d.sub.95 14 d.sub.5), is from 0.2 to 0.6 .mu.m, the d.sub.60 value is from 0.26 to 0.40 .mu.m and the d.sub.90 value is from 0.40 to 0.75.