COPOLYMER PRIMER FOR ALUMINUM ALLOY FOOD AND BEVERAGE CONTAINERS

• Main Author: GARY A. NITOWSKI
• Format: Patent
• Language: English; Spanish
• Published: 10.04.2003
• Edition: 7
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; ADHESIVES; ALLOYS; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; CHEMICAL PAINT OR INK REMOVERS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; 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; DIFFUSION TREATMENT OF METALLIC MATERIAL; DYES; FERROUS OR NON-FERROUS ALLOYS; FILLING PASTES; HANDLING THIN OR FILAMENTARY MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PACKAGES; PACKAGING ELEMENTS; PACKING; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; STORING; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; USE OF MATERIALS THEREFOR; WOODSTAINS

Aluminum alloy sheet is provided (Fig. 1) with a primer layer comprising a reaction product of aluminum oxide or hydroxide and a vinylphosphonic acid acrylic acid copolymer, coated with a polymer coating composition containing polyvinyl chloride or an epoxy. The polymer coated aluminum alloy sheet is shaped into container bodies for food containers or container end panels for aluminum food and beverage containers. Se proporciona una hoja de aleacion de aluminio (Figura 1) con una capa de imprimacion que comprende un producto de reaccion de oxido o hidroxido de aluminio y un copolimero de acido acrilico-acido vinilfosfonico, revestida con una composicion de revestimiento polimerico que contiene cloruro de polivinilo o un epoxi. La hoja de aleacion de aluminio revestida con polimero se forma en cuerpos de recipiente para recipientes de alimentos o cubierta finales de recipientes para alimentos y bebidas.