COMPOSICIONES DE POLIESTER Y POLIAMIDA DE BAJO CONTENIDO DE ALDEHIDO RESIDUAL

• Main Authors: STOLL, KLAUS, TINKL, MICHAEL, STAMP, MELISSA, B, VOLDRICH, JAN, ANDREWS, STEPHEN, MARK, REINICKER, ROGER
• Format: Patent
• Language: Spanish
• Published: 01.08.2007
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

Una composición, estabilizada frente a la formación de contaminantes aldehídicos durante el procesado en fusión de dicha composición, que comprende (a) un poliéster o poliamida, y (b) una cantidad estabilizante efectiva. A mixture of a polyester or a polyamide, such as poly(ethylene terephthalate) PET, and a suitable stabilizer selected from the group consisting of certain Mannich base compounds, when extrusion compounded exhibits a lower residual acetaldehyde content than does PET or polyamide alone when similarly treated. The invention pertains to any polyester or polyamide used in the manufacture of molded articles, fibers, or films, for instance bottles or containers which are used to store consumer materials, for example food, beverages and water.