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US 11,130,835 B2Granted
Liquid epoxy resin composition useful for making polymers
OwnerRichard H. Evans, Benjamin J. Webster +2inventors
InventorsRichard H. Evans, Benjamin J. Webster, Robert M. O'Brien, Jeffrey Niederst
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Abstract
A liquid epoxy resin composition is provided. In preferred embodiments, the liquid epoxy resin composition is free of bisphenol A, bisphenol F, and bisphenol S, including epoxides thereof, and is useful in preparing a polyether polymer having utility in coating compositions, including, e.g., coating compositions for use on food or beverage containers.
Claims34
A liquid epoxy resin composition suitable for use in forming a polyether polymer that can be used to coat a food or beverage container;
- wherein the liquid epoxy resin composition is a liquid at 20° C. and atmospheric pressure and is substantially free of bisphenol A, bisphenol F, bisphenol S, epoxides of bisphenol A, epoxides of bisphenol F, and epoxides of bisphenol S;
- wherein the liquid epoxy resin composition is prepared from reactants comprising one or more epihalohydrins and one or more ortho-substituted diphenol compounds comprising an organic ortho-substituted group;
- wherein the liquid epoxy resin composition comprises diepoxide resins comprising a base structure unit derived from the one or more ortho-substituted diphenol compounds and an “n” number of additional structural units derived from the one or more ortho-substituted diphenol compounds;
- wherein the liquid epoxy resin composition comprises more than 60 and less than about 75 weight percent of n=0 diepoxide resins derived from the one or more ortho-substituted diphenol compounds and at least 15 and less than about 25 weight percent of n=1 diepoxide resins derived from the one or more ortho-substituted diphenol compounds, based on the total weight of any unreacted ortho-substituted diphenol compounds that may be present and any compounds including at least one structural unit derived from the one or more ortho- substituted diphenol compounds;
- and
- wherein the liquid epoxy resin composition has a hydrolysable chloride content of less than or equal to 0.05 weight percent.
3 more elements
Dependencies are inferred from the claim text.