Polyester polymer and coating compositions thereof
AssigneeValspar Sourcing, Inc.
InventorsNicolas Doreau, Benoit Prouvost, Paul Stenson, Charles Skillman, Paul Share
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Abstract
A polymer and coating compositions containing the polymer are provided that are useful in coating applications such as, for example, food or beverage packaging coatings. The polymer preferably includes a polyester backbone and at least one deblockable isocyanate group attached to the backbone. In one embodiment, the polymer includes a polyester-carbamate backbone, one or more pendant deblockable isocyanate groups, and one or more terminal or pendant isocyanate-reactive groups. The deblockable isocyanate groups may be provided, for example, through use of a partially blocked polyisocyanate.
Claims20
A method, comprising:
- providing a coating composition comprising a polymer having a polyester backbone and one or more pendant deblockable isocyanate groups attached to the backbone;
- and
- applying the coating composition on at least a portion of a metal substrate prior to, or after, forming the metal substrate into a food or beverage container, or a portion thereof.
A method, comprising:
- providing a coating composition comprising:
- a polymer having a polyester backbone and one or more pendant deblockable isocyanate groups attached to the backbone, and
- a liquid carrier;
- and
- applying the coating composition on at least a portion of a metal substrate prior to, or after, forming the metal substrate into a food or beverage container, or a portion thereof.
Dependencies are inferred from the claim text.