BIODEGRADABLE RESIN POWDER AND METHOD FOR PRODUCING THE SAME

• Main Authors: KOBAYASHI AKIO, FUJIMOTO KATSUHIRO
• Format: Patent
• Language: English
• Published: 09.08.2007
• Subjects: ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; CINEMATOGRAPHY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DYES; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; FILLING PASTES; GENERAL PROCESSES OF COMPOUNDING; HOLOGRAPHY; HUMAN NECESSITIES; HYGIENE; INKS; MAGNETOGRAPHY; MEDICAL OR VETERINARY SCIENCE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PHOTOGRAPHY; PHYSICS; POLISHES; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS; WORKING-UP

PROBLEM TO BE SOLVED: To provide a fine powder hardly having the risk of providing bad effects on the environment, having high polishing performance and cleaning effects, and capable of being industrially produced in good productivity; and to provide a method for producing the fine powder. SOLUTION: The powder contains 50-100 wt.% crystallized thermoplastic biodegradable resin which contains 50-100 wt.% polylactic acid that contains 50-100 wt.% L-isomer and that has 10,000-1,000,000 weight average molecular weight and 1-1,000 μm average particle diameter. COPYRIGHT: (C)2007,JPO&INPIT