WATER-BASED COATING COMPOSITIONS BASED ON EPOXY RESIN- AMINO ACID ADDUCTS AND THEIR USE AS COATINGS FOR BEVERAGE CONTAINERS

摘要

Abstract of the DisclosureCoating compositions which may be applied by conventional techniquesas well as by electrodeposition are provided by reacting a polyepoxide withan amino acid containing at least one amine group and one carboxyl group,wherein the amine group of the acid is preferentially reactive with the epoxygroups. The resultant reaction product can then be solubilized by neutralizingat least a portion of the acid functionality thereof with an amine or otherbase. Especially useful amine acids are the aminobenzoic acids.The reaction product in combination with a curing or crosslinkingagent can be used in making sanitary liners for metal containers suitable forpackaging beer and other beverages. These compositions provide containerswith cured liners which do not impart undesirable turbidity or taste char-acteristics to the beer, soft drinks or fruit juices packaged therein.