METHOD FOR PRODUCING PELLETS FOR CONTROLLED DELIVERY OF AN ACTIVE

• Main Authors: PEETERS, Gary, EBDON, Nicholas, ADHIKARI, Raju, O'SHEA, Michael, Shane
• Format: Patent
• Language: English; French
• Published: 05.04.2018
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FERTILISERS; FERTILISERS CHARACTERISED BY THEIR FORM; FILLING PASTES; INKS; MANUFACTURE THEREOF; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS; NATURAL RESINS; NITROGENOUS FERTILISERS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; USE OF MATERIALS THEREFOR; WOODSTAINS

A process for preparing granules for delayed release of an active comprising: extruding a tube of biodegradable polymer; inserting within the tube a plurality of longitudinally spaced portions of a core matrix comprising the active; and sealing the tube between the longitudinally spaced portions to form discrete granules comprising portions of core matrix. La présente invention concerne un procédé de préparation de granulés destinés à la libération retardée d'un principe actif, lequel procédé consiste : à extruder un tube de polymère biodégradable ; à insérer à l'intérieur du tube une pluralité de parties espacées longitudinalement d'une matrice centrale comprenant le principe actif; et à sceller le tube entre les parties espacées longitudinalement afin de former des granulés discrets comprenant des parties de matrice centrale.