A thermosetting powder coating composition having improved optical and weathering properties, such as gloss, orange peel, and Distinctness of Image (DOI), while maintaining other physical properties such as flexibility, durability, solvent and corrosive resistance, is described. The composition comprises a reactable mixture of a carboxylic acid group-containing polyester, a monocarboxylic acid group-containing material and beta-hydroxyalkylamide curing agent and / or an epoxy functional crosslinking curing agent.
本文描述了一种热固性粉末涂料组合物,该组合物具有更好的光学和耐候性能,如光泽、桔皮和图像清晰度(DOI),同时保持其他物理特性,如柔韧性、耐久性、耐溶剂性和耐腐蚀性。该组合物由含
羧酸基团的聚酯、含单
羧酸基团的材料和β-羟基烷基酰胺固化剂及/或环氧官能团交联固化剂的可反应混合物组成。