METHOD FOR PRODUCING BLENDS CONSISTING OF POLYSTYRENE AND OF A CROSS-LINKED POLYVINYL PYRROLIDONE HAVING A REDUCED STYRENE RESIDUAL MONOMER CONTENT

• Main Authors: MATHAUER KLEMENS, PIEROBON MARIANNA, HEILMANN KARL OTTO, KERBER MICHAEL, PETSCH TOBIAS, BAYER ROBERT
• Format: Patent
• Language: English
• Published: 21.12.2007
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; FOODS OR FOODSTUFFS; FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J; HUMAN NECESSITIES; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL; SEPARATION; THEIR PREPARATION OR CHEMICAL WORKING-UP; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OFNUTRITIVE QUALITIES, PHYSICAL TREATMENT; THEIR TREATMENT, NOT COVERED BY OTHER CLASSES; TRANSPORTING

The invention relates to a method for removing styrene residual monomers from polystyrene and from blends containing water-insoluble cross-linked polyvinyl pyrrolidone by treating with water. The invention is characterized in that the treatment is carried out on a particle-shaped solid blend.