COATING COMPOSITION COMPRISING A BINDER FORMED FROM POLYESTER AND A PHOSPHORUS ACID

• Main Authors: WOODS, Richard, LOCK, Kam
• Format: Patent
• Language: English; French; German
• Published: 16.10.2024
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; CORRECTING FLUIDS; DYES; FILLING PASTES; HANDLING THIN OR FILAMENTARY MATERIAL; 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; PACKAGES; PACKAGING ELEMENTS; PACKING; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; STORING; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

A coating composition comprising a binder, the binder comprising a polyester material, wherein the polyester material comprises the reaction product of; (a) a polyacid, (b) a polyol and (c) a phosphorous acid, wherein the polyester material has a weight-average molecular weight (Mn) from about 1,000 Da to 25,000 Da and the polydispersity index (Mw/Mn) of the polyester material is from about 1 to 10 and characterised in that the polyester material is present in said binder composition in amounts of more than about 10 weight percent (wt%). The coating composition is useful for coating food and/or beverage containers.