Polyesterpartikler med en midlere partikkelstorrelse <50 micrometer, fremgangsmate til fremstilling av disse savel som deres anvendelse til pulverlakkbelegg

• Main Authors: BLATTER KARSTEN, SIMON PETER
• Format: Patent
• Language: Norwegian
• Published: 09.05.2005
• Edition: 7
• Subjects: ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; GENERAL PROCESSES OF COMPOUNDING; INKS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS; WORKING-UP

PCT No. PCT/EP98/00747 Sec. 371 Date Aug. 13, 1999 Sec. 102(e) Date Aug. 13, 1999 PCT Filed Feb. 11, 1998 PCT Pub. No. WO98/36010 PCT Pub. Date Aug. 20, 1998The invention relates to spherical transparent polyester particles having a mean particle size <50 mu m and a monomodal particle size distribution having a span (d90-d10/d50)<2.5 which can be melted to form a continuous coating at temperatures <200 DEG C., to a process for their preparation and to their use for powder coatings. In a preferred embodiment the particles comprise units of formulae (I) and (2) -CO-X-CO(1) -O-D-O-(2) where X is a substituted or unsubstituted C6 to C14-aromatic radical or an alkylene, polymethylene, cycloalkane or dimethylenecycloalkane group or a straight-chain or branched, saturated or unsaturated alkanediyl group and D is an alkylene, polymethylene, cycloalkane or dimethylenecycloalkane group or a straight-chain or branched, saturated or unsaturated alkanediyl group.