POWDER PAINT BINDER COMPOSITION

• Main Authors: LOONTJES, JACOBUS, ANTONIUS, MOLHOEK, LEENDERT, JAN, PLUM, BARTHOLOMEUS, JOHANNES, MARGRETHA, SPOOLDER, BIANCA, MARIA, JOHANNA
• Format: Patent
• Language: English; French; German
• Published: 11.12.2002
• Edition: 7
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; 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

The invention is directed to a thermosetting powder paint binder composition comprising: a)a polyester comprising at least 75 mol% of isophtalic acid units and b)a crosslinker containing groups capable of reacting with hydroxyl groups and having an aliphatic chain with more than 6 atoms. The polyester may comprise 100 mol% of isophtalic acid units. The powder coatings show an improved combination of weathering characteristics and mechanical properties.