Compositions for containers and other articles and methods of using same
First Claim
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1. An article comprising a food or beverage container, or a portion thereof, having a metal substrate and a coating applied on at least a portion of the metal substrate;
- wherein the coating is substantially free of bisphenol A, bisphenol F, bisphenol S, polyhydric phenols having estrogenic activity greater than or equal to that of bisphenol S, and epoxides thereof; and
wherein the coating is formed from a coating composition that includes a polyether polymer prepared from ingredients including;
(i) an extender comprising a dihydric phenol that does not include substituent groups at ortho ring positions relative to the phenol hydroxyl groups, and(ii) a diepoxide compound that includes a segment of the below Formula (I);
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Abstract
This invention provides a polymer, which is preferably a polyether polymer. The polymer may be uses in coating compositions. Containers and other articles comprising the polymer and methods of making such containers and other articles are also provided. The invention further provides compositions including the polymer (e.g., powder coatings), which have utility in a variety of coating end uses, including, for example, valve and pipe coatings.
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Citations
27 Claims
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1. An article comprising a food or beverage container, or a portion thereof, having a metal substrate and a coating applied on at least a portion of the metal substrate;
- wherein the coating is substantially free of bisphenol A, bisphenol F, bisphenol S, polyhydric phenols having estrogenic activity greater than or equal to that of bisphenol S, and epoxides thereof; and
wherein the coating is formed from a coating composition that includes a polyether polymer prepared from ingredients including;(i) an extender comprising a dihydric phenol that does not include substituent groups at ortho ring positions relative to the phenol hydroxyl groups, and (ii) a diepoxide compound that includes a segment of the below Formula (I); - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
- wherein the coating is substantially free of bisphenol A, bisphenol F, bisphenol S, polyhydric phenols having estrogenic activity greater than or equal to that of bisphenol S, and epoxides thereof; and
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26. An article comprising a food or beverage container, or a portion thereof, having a metal substrate and an interior food-contact coating applied on at least a portion of the metal substrate;
- wherein the coating is substantially free of bisphenol A, bisphenol F, bisphenol S, polyhydric phenols having estrogenic activity greater than or equal to that of bisphenol S, and epoxides thereof; and
wherein the coating is formed from a liquid thermoset coating composition that includes a polyether polymer prepared from ingredients including;(i) an extender comprising catechol, hydroquinone, resorcinol, or a mixture thereof, and (ii) a diepoxide compound that includes a segment of the below Formula (I);
- wherein the coating is substantially free of bisphenol A, bisphenol F, bisphenol S, polyhydric phenols having estrogenic activity greater than or equal to that of bisphenol S, and epoxides thereof; and
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27. A coating composition, comprising:
a polyether polymer that includes at least 25% by weight of aryl or heteroaryl groups and has a glass transition temperature of at least 60°
C. and a number average molecular weight of at least 2,000, wherein the polymer is formed by reacting ingredients including;(i) an extender comprising a dihydric phenol that does not include substituent groups at ortho ring positions relative to the phenol hydroxyl groups, and (ii) a diepoxide compound that includes a segment of the below Formula (I);
Specification