COATING COMPOSITIONS FOR PACKAGING ARTICLES SUCH AS FOOD AND BEVERAGE CONTAINERS

• Main Authors: GIBANEL, Sebastien, PROUVOST, Benoit
• Format: Patent
• Language: English; French; German
• Published: 18.05.2022
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; 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 BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED 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

The present invention relates to an article, comprising a food or beverage container, or a portion thereof, including: a metal substrate; and a coating disposed on at least a portion of the metal substrate, wherein the coating is formed from a coating composition having an emulsion polymerized latex hat is a reaction product of a method comprising:emulsion polymerizing first-stage monomers in an aqueous carrier to produce a first-stage copolymer, wherein the first-stage monomers include greater than 3% by weight of step-growth- functional monomers having step-growth- functional groups, based on an entire weight of the first-stage monomers; and emulsion polymerizing second-stage monomers in the presence of the first-stage copolymer to form a second-stage copolymer;wherein the coating composition is substantially free of structural units derived from (meth)acrylamide-type monomers and bisphenol A.