Coating Compositions for Packaging Articles and Methods of Coating
First Claim
Patent Images
1. 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, andthe 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.
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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.
41 Citations
26 Claims
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1. 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.; andwherein the coating composition is at least substantially free of bisphenol A and the diglycidyl ether of bisphenol A. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. 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.; andwherein 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. - View Dependent Claims (23, 24)
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25. 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.; anda liquid carrier; wherein the coating composition is at least substantially free of bisphenol A and the diglycidyl ether of bisphenol A.
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26. An article comprising:
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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.
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Specification