AQUEOUS DISPERSIONS OF UNGELLED POLYEPOXIDE-POLYOXYALKYLENPOLYAMINE RESINS AND CATIONIC RESINS, THE USE OF SUCH DISPERSIONS FOR ELECTROCOATING AND ARTICLES ELECTROCOATED WITH SUCH DISPERSIONS

摘要

Ungelled resins, aqueous dispersions of cationic resins, coating compositions, and electrodeposition using the resinous coating compositions are disclosed. The resins are formed from reacting polyepoxides with polyalkylenepolyamines. The aqueous dispersions are prepared by at least partially neutralizing the resins to provide cationic groups and dispersing the cationic resins in aqueous medium. When added to cationic electrodepositabe coating compositions, such as high throw-power compositions, the ungelled cationic resins provide better appearing, more flexible and water-resistant electrodeposited coatings.