COATING COMPOSITIONS FOR CANS AND METHODS OF COATING

The present invention relates to a method of coating a food or beverage can, the method comprising: forming a composition comprising an emulsion polymerized latex polymer, comprising: forming a salt of an acid- or anhydride-functional polymer and a tertiary amine in a carrier comprising water to for...

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Bibliographische Detailangaben
Hauptverfasser:	Rardon, Daniel E, Evans, Richard H, Spynda, Rachel Ann, Bartley, George K. III, O'Brien, Robert M
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS 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 METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PACKAGES PACKAGING ELEMENTS PACKING PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES STORING TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The present invention relates to a method of coating a food or beverage can, the method comprising: forming a composition comprising an emulsion polymerized latex polymer, comprising: forming a salt of an acid- or anhydride-functional polymer and a tertiary amine in a carrier comprising water to form an aqueous dispersion; combining an ethylenically unsaturated monomer component comprising 0.1 wt-% to 30 wt-% of an oxirane-functional alpha, beta-ethylenically unsaturated monomer with the aqueous dispersion, based on the weight of the monomer component; and polymerizing the ethylenically unsaturated monomer component in the presence of the aqueous dispersion to form an emulsion polymerized latex polymer; and applying the composition comprising the emulsion polymerized latex polymer to a metal substrate prior to or after forming the metal substrate into a food or beverage can or portion thereof. The present invention also relates to a composition for use in coating a food and beverage can and to a coated food or beverage can or portion thereof.