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US 2023/0390802 A1Published application
Alkali-soluble resin additives and coating compositions including such additives
AssigneeSwimc LLC
InventorsSebastien GIBANEL, Marie BRAILLON-GIRARD, Samuel PUAUD
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Abstract
A coating composition is provided that is useful in coating metal substrates such as interior and/or exterior surfaces of food or beverage cans. In preferred embodiments, the coating composition is formulated using a physical blend of a preformed_resin system and an alkali-soluble resin additive.
Claims29
1-44. (canceled)
An aqueous inside spray food or beverage can coating composition, the coating composition comprising:
- a resin system comprising an emulsion polymerized acrylic latex;
- an alkali-soluble resin additive comprising an at least partially neutralized acid- or anhydride-functional organic solution polymerized acrylic polymer;
- and
- a nitrogen-containing carboxyl-reactive crosslinker;
- wherein the coating composition comprises a physical blend of the emulsion polymerized acrylic latex and the alkali-soluble resin additive.
2 more elements
An aqueous inside spray beverage can coating composition, the coating composition comprising:
- more than 50 weight percent, based on total resin solids, of an at least partially neutralized acid- or anhydride-functional emulsion polymerized acrylic latex having a Tg of greater than 20° C.;
- an alkali-soluble resin additive comprising an at least partially neutralized acid- or anhydride-functional organic solution polymerized acrylic polymer;
- a beta-hydroxyalkylamide crosslinker;
- and
- an aqueous carrier comprising more than 5 weight percent of one or more organic solvents;
- and
- wherein the coating composition is substantially free of each of styrene and bisphenol A and comprises a physical blend of the preformed emulsion polymerized acrylic latex and the alkali-soluble resin additive.
4 more elements
Dependencies are inferred from the claim text.