IMPROVEMENTS IN OR RELATING TO POWDERED COATING COMPOSITIONS

摘要

A powdered coating composition comprises a thermosetting resin which consists of two components. The first component includes an acid reactive material comprising a polyepoxide or beta -hydroxylamide compound. The second component is an acid terminated resin which reacts with the first component. A curing agent, which includes a polycarboxylic acid having a functionality of at least 3 and a source of tertiary nitrogen, is present to react with excess of the first component thereby curing the thermosetting resin. The compositions give rise to coating films having an excellent appearance and a reduced gloss which can be adjusted by variation of the ratios of the components.