High mineral oil content styrene polymers used e.g. in moldings, films or foams are obtained by screw extrusion mixing with mixers or kneaders at the oil introduction zones

摘要

Production of styrene polymers with a mineral oil content >= 8 wt.% by mixing comprises: (a) using an extruder with one or more screws; and (b) introducing the mineral oil at >= 2 openings, there being mixing or kneading elements in the vicinity of the openings.