COATING RESIN AND ITS USE IN POWDER COATING

• Main Authors: BURGDOERFER, HANS-HERIBERT, WOLTJES, DIETER, HERWIG, JENS
• Format: Patent
• Language: English; German
• Published: 09.09.1992
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED 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

The coating resin comprises a modified high-pressure polyethylene (LDPE) and is characterised by a) a content of 0.1-1 mol-% of copolymerised unsaturated carboxylic acids, based on the total number of mols of all monomers, and/or the corresponding content of carboxylic anhydrides, b) a degree of neutralisation of the carboxyl groups, which may also be derived from anhydride groups, of from 0 to below 50%, c) a termonomer content of from 0 to 5 mol-% based on the total number of mols of all monomers, d) a melt flow index of 20-200 g/10 minutes (190 DEG C; 2.15 kp) and e) a particle size of 1-600  mu m, and is used in a process for powder coating.