| 摘要 |
The invention relates to a binder composition that contains a polyester resin and a polyacrylate resin and the use of this composition for powder coatings. The polyester resin is composed substantially of units of dicarboxylic acids, glycols and three- or higher-functional monomers, the polyester resin comprises at least 15 mol% isophthalic acid and at least 15 mol% 1,4-cyclohexane dicarboxylic acid as dicarboxylic acids, and the glycols comprise at least 50 mol% branched aliphatic glycols with 5-11 carbon atoms, which may optionally comprise an ester group, and at most 50 mol% aliphatic glycol with 2-6 carbon atoms, while use is made of up to at most 8 mol% of dicarboxylic acids plus glycols of a three- or higher-functional monomer and the polyacrylate resin is a glycidylfunctional acrylate resin, a hydroxylfunctional resin or an acidic acrylate resin. |
