Process for preparing solid blends of polyvinylpyrrolidones and ethoxylated fatty acid derivatives

• Main Authors: SCHILLO, SIMONE, LANGE, RONALD FRANS MARIA
• Format: Patent
• Language: English; French; German
• Published: 20.02.2008
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Solid blends of polyvinyl pyrrolidones with ethoxylated fatty acid derivatives are produced in an extruder, the polyvinyl pyrrolidone being fed into the extruder in the form of an aqueous solution and the solvent being removed during the extrusion.