One of the bigger users of waterborne coatings is the automotive industry. The driving force behind this developent are some benefits such as reduced VOCs (Volatile Organic Compounds) and an improved appearance, however, this type of coatings suffer from higher concentration of HAPs (Hazardous Air Pollutants) than solventborne coatings. The article discusses the advantages and disadvantages of using waterborne coatings: the best available control technology and maximum available control technology used by the automotive solventborne paint shops; transfer efficienies of waterbornes ( a waterborne basecoat of 3.1 lb VOC/gallon shows a transfer efficiency of about 50 %); results derived from an analysis of MSDSs (Material Safety Data Sheets); comparison of automotive solventborne and waterborne base coat properties (transfer efficieny, dry-film thickness, lb VOC/Gal, VOC minus water, nonvolatile volume solids, gal/unit); HAPs, VOCs and solids content of primer surfacers and basecoats (based on MSDS data from three major auotmotive paint suppliers). Slightly more than 75 % of solvents in waterborne coatings are hazardous air pollutants (2.6 lb per gallon). This might be the reason that only one automotive assembly plant (Eisenach, Germany) is in operation using a waterborne clearcoat.


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    Title :

    The waterborne dilemma. Converting to waterborne coatings cuts VOCs, but may actually increase HAPs


    Additional title:

    Vor- und Nachteile der Anwendung wäßriger Beschichtungssysteme in der Automobilindustrie


    Contributors:
    Hussey, F. (author)

    Published in:

    Publication date :

    1995


    Size :

    3 Seiten, 1 Bild, 3 Tabellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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