Packaging coating containing water-dispersible acrylic block copolymer
AssigneeSwimc LLC
InventorsJoseph D. DeSousa, Zhilian Zhou, Kailas B. Sawant
Life of this patent
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Abstract
A food or beverage container having a body portion or an end portion that includes a metal substrate with a coating composition disposed thereon. The coating composition includes a water-dispersible acrylic linear block copolymer made by surfactant-free heterogeneous radical polymerization (“SFHRP”). The block copolymer imparts a desirable combination of flexibility and corrosion resistance to the coating composition, and the substantial absence of surfactants during polymerization contributes to other desirable properties including good blush resistance.
Claims21
A food or beverage container that includes one or more of a body portion or an end portion including a metal substrate and a cured coating disposed thereon, wherein the coating is formed from an aqueous coating composition comprising a water-dispersible acrylic linear block copolymer made by surfactant-free heterogeneous radical polymerization.
A method for preparing a coated food or beverage container, or a portion thereof, the method including applying an aqueous coating composition that includes a water-dispersible acrylic linear block copolymer made by surfactant-free heterogeneous radical polymerization to a metal substrate prior to or after forming the metal substrate into a food or beverage container or portion thereof.
Dependencies are inferred from the claim text.