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US 2024/0239954 A1Published application
Polyester copolymer and coating compositions therefrom having improved corrosion resistance
AssigneeSwimc LLC
InventorsNusrah HUSSAIN, George K. BARTLEY, III, Beverly A. ACCIPITER, Brenda E. HOHMAN, Arthur RIAZZI
Life of this patent
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Abstract
A polyester copolymer useful for food and beverage container coatings is disclosed. The copolymer is derived from ingredients including at least a diepoxide, such as a diglycidyl ether, and a glass transition increasing monomer, such as a pentaspiroglycol. In some approaches, the polyester copolymer is derived from reaction of a polyester prepolymer and a diepoxide resin.
Claims23
1-24. (canceled)
A coating composition comprising:
- a polyester ether copolymer having hydroxyl groups pendant to the backbone of the copolymer;
- wherein the polyester ether copolymer is derived from ingredients including a Tg-increasing diol and a diepoxide resin;
- wherein the Tg-increasing diol includes a polycyclic group, a monocyclic group having less than six members in a ring, an aromatic group, or a branched aliphatic group of 20 carbons or less with two or more branch points in the aliphatic structure, or combinations thereof;
- optionally, one or more of a carrier, a lubricant, a wetting additive, or a defoamer;
- and
- wherein the coating is a food-contact coating for food and beverage applications.
3 more elements
Dependencies are inferred from the claim text.