A process for preparing COATING in powder form on the basis of an epoxy resin and a carboxyl group-containing polyester

摘要

1. Process for the manufacture of a powder coating composition which can be cured hot, consisting of a mixture of epoxide resin and of polyester resin, of a cure catalyst and of a cure accelerator, characterized in that the composition is manufactured by mixing the carboxylated polyester resin containing the cure catalyst and the cure accelerator for the epoxy resin-polyester resin system, the mixture being cured hot, the catalyst added beforehand to the carboxylated polyester resin consisting of lithium acetate, zinc acetate, magnesium acetate or tetraethylammonium bromide employed by itself or in a mixture, the accelerator added beforehand to the carboxylated polyester resin consisting of 2-methylimidazole, 1-methylimidazole, 2-phenylimidazole, 2-isopropylimidazole or imidazole.