Transparent or pigmented powder coatings based on particular carboxy-group-containing polyesters and hydroxyalkylamides and their application

摘要

Powder lacquer comprises a beta-hydroxyalkyl amide (I) and a carboxy-functional polyester (II) prepared by reacting an aliphatic and/or alicyclic diol and/or polyol with an aliphatic, alicyclic and/or aromatic di- and/or polycarboxylic acid and an aliphatic, alicyclic and/or aromatic di- and/or polycarboxylic acid ester. (II) has a glass transition temperature of 30-90degreesC and an acid number of 10-150 mg KOH/g.