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US 2013/0280455 A1Published application
Coating Compositions for Packaging Articles and Methods of Coating
AssigneeValspar Sourcing, Inc.
InventorsRichard H. Evans, Jeffrey Niederst, Robert M. O'Brien, Benoit Prouvost, Kevin Romagnoli, Grant Schutte, Paul Stenson, Tom Van Kuren
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Abstract
This invention provides a polymer that is useful in a variety of applications, including as a binder polymer of a coating composition, and especially a packaging coating composition. Packaging articles (e.g., containers) comprising the polymer and methods of making such packaging articles are also provided.
Claims26
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 metal substrate, wherein the coating comprises:
- a film-forming amount of a polyether polymer having:
- one or more segment of the following Formula I:
- —O—Ar—(Rn—Ar)n—O—, wherein:
- each Ar is independently an aryl or heteroaryl group,
- each n is independently 0 or 1,
- R, if present, is a divalent organic group, and
- the two oxygen atoms are each ether oxygen;
- and
- a glass transition temperature (Tg) of at least 70° C.;
- and
- wherein the coating composition is at least substantially free of bisphenol A and the diglycidyl ether of bisphenol A.
11 more elements
A method, comprising:
- providing a metal substrate;
- providing a coating composition, comprising:
- a polyether polymer having:
- one or more segment of the following Formula I:
- —O—Ar—(Rn—Ar)n—O—, wherein:
- each Ar is independently an aryl or heteroaryl group,
- each n is independently 0 or 1,
- R, if present, is a divalent organic group, and
- the two oxygen atoms are each ether oxygen;
- and
- a glass transition temperature (Tg) of at least 70° C.;
- and
- wherein the coating composition is at least substantially free of bisphenol A and the diglycidyl ether of bisphenol A;
- and
- applying the coating composition on at least a portion of a major surface of the substrate prior to, or after, forming the substrate into a food or beverage container or a portion thereof.
12 more elements
A coating composition, comprising:
- a film-forming amount of a polyether polymer having:
- one or more segment of the following Formula I:
- —O—Ar—(Rn—Ar)n—O—, wherein:
- each Ar is independently an aryl or heteroaryl group,
- each n is independently 0 or 1,
- R, if present, is a divalent organic group, and
- the two oxygen atoms are each ether oxygen;
- and
- a glass transition temperature (Tg) of at least 70° C.;
- and
- a liquid carrier;
- wherein the coating composition is at least substantially free of bisphenol A and the diglycidyl ether of bisphenol A.
9 more elements
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 metal substrate, wherein the coating comprises a film-forming amount of a polyether polymer having polycyclic groups and a glass transition temperature (Tg) of at least 70° C., wherein the coating composition is at least substantially free of bisphenol A and the diglycidyl ether of bisphenol A.
Dependencies are inferred from the claim text.