METHOD FOR PREPARATION OF THERMOPLASTIC CELLULOSE ACETATE COMPOSITION AND COMPOSITIONS

• Main Authors: Baltakys, Kestutis, Gineika, Andrius, Bendoraitiene, Joana, Peciulyte, Laura, Liudvinaviciute, Dovile, Rutkaite, Ramune
• Format: Patent
• Language: English; French; German
• Published: 16.10.2024
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The invention discloses a method for preparation of thermoplastic cellulose acetate composition comprising inorganic fillers, where the method comprises: cellulose acetate fractionation; synthesizing inorganic filler particles from silica gel being a waste product of aluminium fluoride production or from opoka rock; mixing cellulose acetate granules with inorganic filler particles and a plasticizer; extruding and granulating.The method steps allow preparation of thermoplastic polymer compositions with improved flow of melt characteristics, facilitating further processing of the bio-based compositions. The method steps allow lowering energy needs in the extrusion process, decreasing stiffness of extruded cellulose acetate compositions, exploiting sustainable easily available natural and waste materials.