26-03-2020 дата публикации
Номер: US20200095459A1
Принадлежит:
A functionalized polymer containing at least one reactive carbonyl group, more preferably at least one beta-dicarbonyl group, is provided. The polymer is preferably substantially free of segments derived from bisphenol A and epoxides thereof. The functionalized polymer, which can be a polyether polymer, is useful in preparing coating compositions for use in packaging applications, including coating compositions for use in forming interior or exterior coatings of food or beverage containers. 1. An article comprising a food or beverage container , or a portion thereof , the article comprising:a metal substrate;a thermally-cured coating disposed on at least a portion of the substrate, wherein the coating was formed by baking a coating composition at a temperature of at least 150° C., and wherein, prior to bake, the coating composition comprises a polymer having a beta-dicarbonyl group.2. The article of claim 1 , wherein the polymer comprises a polyether polymer.3. The article of claim 1 , wherein the beta-dicarbonyl group has the structure of the below Formula (I):{'br': None, 'sup': 1', '2', '3, 'sub': n', '2, '—(R)—C(═O)—C(R)—C(═O)—R\u2003\u2003(I)'} R′, if present, is a linking group attached to a backbone atom of the polymer;', {'sup': '2', 'each Ris independently hydrogen, an organic group, or any other group that does not substantially reduce the reactivity of the carbon atom attached to the carbon atoms of the two depicted carbonyl groups;'}, {'sup': '3', 'Ris hydrogen, an organic group, or any other group that does not substantially reduce the reactivity of the carbon atom attached to the carbon atoms of the two depicted carbonyl groups;'}, 'n is 0 or 1; and', {'sup': 1', '2', '3, 'two or more of R, R, and/or Rcan optionally join to form one or more cyclic groups.'}], 'wherein4. The article of claim 3 , wherein n is 1.5. The article of claim 4 , wherein Rincludes an oxygen or nitrogen atom.6. The article of claim 5 , wherein the oxygen or nitrogen atom is ...
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