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 composition applied on at least a portion of the metal substrate, the coating composition comprising;
a polyether polymer that includes at least 25% by weight of aryl or heteroaryl groups, wherein the coating composition contains less than 1,000 parts per million (ppm) of bound bisphenol A, bisphenol F, bisphenol S, polyhydric phenols having estrogenic activity greater than or equal to that of bisphenol S, and epoxides thereof;
wherein the polyether polymer is formed by reacting ingredients including;
(i) an extender and (ii) a diepoxide compound, wherein the extender or diepoxide compound, or both, includes one or more segments 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 used 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.
288 Citations
33 Claims
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1. An article comprising:
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a food or beverage container, or a portion thereof, having;
a metal substrate; and
a coating composition applied on at least a portion of the metal substrate, the coating composition comprising;
a polyether polymer that includes at least 25% by weight of aryl or heteroaryl groups, wherein the coating composition contains less than 1,000 parts per million (ppm) of bound bisphenol A, bisphenol F, bisphenol S, polyhydric phenols having estrogenic activity greater than or equal to that of bisphenol S, and epoxides thereof;wherein the polyether polymer is formed by reacting ingredients including;
(i) an extender and (ii) a diepoxide compound, wherein the extender or diepoxide compound, or both, includes one or more segments 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, 26, 27)
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28. A method comprising:
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providing a metal substrate; and applying on at least a portion of the substrate a coating composition comprising a polyether polymer that includes at least 25% by weight of aryl or heteroaryl groups, wherein the coating composition contains less than 1,000 parts per million (ppm) of bound bisphenol A, bisphenol F, bisphenol S, polyhydric phenols having estrogenic activity greater than or equal to that of bisphenol S, and epoxides thereof; wherein the polyether polymer is formed by reacting ingredients including;
(i) an extender and (ii) a diepoxide compound, wherein the extender or diepoxide compound, or both, includes one or more segments of the below Formula (I); - View Dependent Claims (29, 30, 31, 32, 33)
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Specification