Methods of Preparing Compositions for Containers and Other Articles and Methods of Using Same

摘要

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.

主权项

1. A method of making a high molecular weight polyether polymer, comprising the step of reacting ingredients including:
(i) a nitrogen-containing catalyst having at least one bridgehead Nitrogen atom; (ii) a diepoxide compound; and (iii) a hindered polyhydric phenol compound having an atom or group with an atomic weight of at least 15 Daltons in an ortho position relative to an oxygen atom on a phenol ring;wherein the polyether polymer: (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.