ANHYDRIDE FUNCTIONALIZED POLYHYDROXYALKANOATES, PREPARATION AND USE THEREOF

• Main Authors: MULUKUTLA, PRASAD, MISRA, MANJUSRI, DESAI, SHROJAL, M, MOHANTY, AMAR, K, DRZAL, LAWRENCE, T
• Format: Patent
• Language: English; French
• Published: 25.08.2005
• Edition: 7
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; 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; WORKING-UP

A process and composition using anhydride grafted polyhydroxyalkanoate (PHA) polymer (grafted polymer) which has been extruded with a PHA polymer (non-grafted) and a dried cellulose fiber which reacts with the maleated PHA is described. The composites formed have improved mechanical properties. L'invention concerne un procédé et une composition utilisant un polymère (polymère greffé) de polyhydroxyalcanoate (PHA) d'anhydride greffé qui a été extrudé avec un polymère PHA (non greffé) et une fibre de cellulose séchée qui réagit avec le PHA maléaté. La composition ainsi formée présente de meilleures propriétés mécaniques.