Waterborne coating products have been used by Deutsche Bahn to paint railway vehicles for more than 20 years. This article traces the development of this trend and presents a detailed look at Deutsche Bahn's technical requirements for the waterborne coatings it uses, including their properties and performance, particularly their resistance to corrosion. In the beginning, their use was limited primarily to single-pack waterborne alkyd primers and waterborne acrylic dispersion finish coats. Now, those products have been largely replaced by various two-pack waterborne epoxy and polyurethane products used as primers, intermediate coats, and finish coats for the exterior of rail vehicles. With thick, elastomeric, two-pack waterborne epoxy coatings available for use on the bottom of rail cars, essentially all parts of rail cars can be completely coated with waterborne products. This situation helps Deutsche Bahn meet requirements to reduce solvent emissions and enhance its environmental awareness as a company. Deutsche Bahn's testing protocol is already used by other industries in Germany to test products for their own use. The detailed tests included in the tables with this article could benefit other end-users who want to conduct an evaluation of waterborne coating systems for their particular industry. Future developments of waterborne products are expected to include improved resistance to chemicals by waterborne finish coats and optimization of their cleaning. The future also will determine whether a pigmented finish coat or a clear varnish, or perhaps even a clear coat/base coat system adapted from the automotive industry, would be best.

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  • Corporate Authors:

    Technology Publishing Company

    2100 Wharton Street, Suite 310
    Pittsburgh, PA  United States  15203
  • Authors:
    • Kruger, J
  • Publication Date: 2000-9


  • English

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  • Accession Number: 00798528
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 28 2000 12:00AM