16.2 Evaluation of the Waterbased Paint to Optimize your Microbial Protection
(Room 234-236)
11 Apr 18
10:00 AM
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10:30 AM
Tracks:
Session 16: Biobased Coatings, Session 16: Bio-Fouling & Microbial Protection
Low or zero VOC products have an increasing market share in the paint industry. The demand for lower VOC products has forced paint manufacturers to increase the amount of water and water-based raw materials while decreasing VOC contenting solvent levels. This has a severe impact on microbial susceptibility of the end-products since it provides an optimal environment for microorganisms. The microbial growth leads to the degradation of the paint. Some typical characteristics of a spoiled paint are: loss of viscosity, discoloration, odor and change in physical properties. This shift to more water based formulations makes it critical to incorporate the appropriate biocide system into the formulation to control the microbial growth.
Historically, isothiazolines, bronopol, and formaldehyde releasers have been the biocides of choice for preventing microbial growth in the container. Besides these commonly used active ingredients, Dibromodicyanobutane (DBDCB) has been used successfully in detergents and adhesives, these excellent results could be easily transfered to emulsion systems like paints and coatings. This paper will address the challenges for formulators when selecting the correct biocide system in water based paint as well as the benefits of different types of biocides.