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US 8,367,171 B2Granted
Polymer having polycyclic groups and coating compositions thereof
AssigneeValspar Sourcing, Inc.
InventorsPaul Stenson, Benoit Prouvost, Jeffrey Niederst, Donald G. Wind, Richard H. Evans, Charles Skillman, Paul E. Share, James Robinson
Life of this patent
Estimating the term…
Abstract
A polymer and coating composition containing the polymer are provided that are useful in coating applications such as, for example, food or beverage packaging containers. The polymer preferably includes a backbone having one or more polycyclic groups. In one embodiment, the polymer is a polyester and, more preferably, a polyester-urethane polymer. In one embodiment, the one or more polycyclic groups is a tricyclic or higher group.
Claims20
An article, comprising:
- a metal substrate of a food or beverage container, or a portion thereof;
- and
- a coating applied on at least a portion of a major surface of the substrate, the coating prepared from a coating composition including a polyester polymer having a plurality of polycyclic groups, wherein the polymer includes both one or more unsaturated bicyclic groups and one or more at least tricyclic groups.
A method, comprising:
- providing a coating composition comprising:
- a polyester polymer having a plurality of polycyclic groups, wherein the polymer includes one or more unsaturated bicyclic groups and one or more at least tricyclic groups, and
- a liquid carrier;
- and
- applying the coating composition on a metal substrate prior to, or after, forming the metal substrate into a food or beverage can or a portion thereof.
2 more elements
A coating composition, comprising:
- at least 10 weight percent, based on total solids, of a polyester polymer having:
- a glass transition temperature of at least 50° C., and
- polycyclic groups that constitute at least 10 weight percent of the polymer, based on the weight percent of polycyclic-group-containing monomer relative to the total weight of the polymer, wherein the polymer includes both one or more unsaturated bicyclic groups and one or more at least tricyclic groups;
- a resole phenolic type crosslinker;
- and
- a liquid carrier.
3 more elements
Dependencies are inferred from the claim text.