Compositions for Containers and Other Articles and Methods of Using Same
First Claim
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1. An article comprising:
- a packaging container, or a portion thereof, having a metal substrate and a coating composition applied on at least a portion of the metal substrate, wherein the coating composition comprises a polyether polymer that;
(a) includes at least 25% by weight of aryl or heteroaryl groups and (b) is substantially free 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; and
wherein the polymer is formed by reacting ingredients including;
(i) an extender 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
24 Claims
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1. An article comprising:
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a packaging container, or a portion thereof, having a metal substrate and a coating composition applied on at least a portion of the metal substrate, wherein the coating composition comprises a polyether polymer that;
(a) includes at least 25% by weight of aryl or heteroaryl groups and (b) is substantially free 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; andwherein the polymer is formed by reacting ingredients including;
(i) an extender 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)
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22. A coating composition, comprising:
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a polyether polymer that includes at least 25% by weight of aryl or heteroaryl groups, has a glass transition temperature of at least 30°
C. and a number average molecular weight of at least 2,000, and is substantially free 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; andwherein the polymer is formed by reacting ingredients including;
(i) an extender and (ii) a diepoxide compound that includes a segment of the below Formula (I); - View Dependent Claims (23, 24)
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Specification