A waterborne basecoat system for vehicle refinishes is presented. The system consists of pigment concentrates called mixing bases and a mixing clear. The basecoat paints show a VOC level of less than 420 g/l. The paints can be applied by high volume low pressure spray guns, an equipment that guarantees very low overspray. The rheological behavior of these basecoats is controlled by the use of thixotropic silicate. The chemical base of the mixing clear and the mixing bases is a special set of polyurethane resins, which enable an excellent orientation of the metallic pigments and favorable grinding properties for high hiding power. The synthesis of the polyurethane resin of the mixing bases is described in an ester process as an alternative to the well-known ketone process. The basecoat system is commercialized under the trade name of Glasurit as 90 Line.


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    Title :

    Water-based coatings for automotive refinishing


    Contributors:
    Rink, H.P. (author) / Mayer, B. (author)


    Publication date :

    1998


    Size :

    6 Seiten, 10 Bilder, 1 Tabelle, 6 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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