VERFAHREN UND ANLAGE ZUR AUFBEREITUNG VON POLYURETHAN

摘要

A process and apparatus are provided for the treatment of waste polyurethane particles by alcoholysis or acidolysis. The particles are treated with a solvent at a reaction temperature within the range of 120 DEG C. to 200 DEG C. while being subjected to comminution until the particles are liquified. The resultant liquified product may be converted to a polyurethane by treatment with a polyisocyanate. An apparatus for conducting this process includes shaped blades and fixed heated elements for exerting strong shear forces on the particles or fragments of polyurethane.