Back to results
US 8,946,316 B2Granted
Polymer having polycyclic groups and coating compositions thereof
AssigneeValspar Sourcing, Inc.
InventorsPaul Stenson, Benoit Prouvost, Jeffrey Niederst, Donald 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
A method, comprising:
- providing a coating composition comprising:
- a polymer having a polycyclic group and a backbone that includes both ester and urethane linkages, 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 method, comprising:
- providing a coating composition comprising:
- a polymer having an at least tricyclic group and a backbone that includes both ester and urethane linkages, wherein the polymer has a glass transition temperature of at least 50° C. and includes at least 10 weight percent of polycyclic groups, based on the weight percent of polycyclic-group-containing monomer relative to the total weight of the polymer, and
- a liquid carrier;
- applying the coating composition on a metal substrate;
- and
- forming the metal substrate into a food or beverage can or a portion thereof.
3 more elements
A coating composition comprising:
- a polymer having an at least tricyclic group and a backbone that includes both ester and urethane linkages, wherein the polymer has a number average molecular weight of at least 1,500;
- and
- a liquid carrier.
Dependencies are inferred from the claim text.