Aliphatic polyurethane resin dispersion. Binder for waterborne, air- and oven-drying basecoats in two-layer systems for automotive coatings, coatings for plastics, automotive refinishing coatings and industrial coatings. Properties / Applications: When used in two-layer systems with TSA and two-component polyurethane clearcoats, metallic basecoats formulated with Bayhydrol® UH 2952/1 are characterized by even, cloud-free films with a very good metallic effect, excellent gloss and good water resistance. Because it adheres to OEM finishes without prior sanding, the metallic basecoat can also be used for online retouching (45 min at 80 °C). The metallic basecoat can be oversprayed with TSA or two-component polyurethane clearcoats after pre-drying e.g. for 5 min at an oven temperature of 80 °C or for 15 min at room temperature. Baking parameters are a function of the reactivity of the clearcoat. Force drying is possible at temperatures as low as 60 °C (45 min). Information provided by Covestro |