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More effective and less risky when you paint the hull of your boat
Date:5/9/2011

the effect of different biocides on different types of fouling organisms is weighed up against the expected environmental risk. The result is a set of formulas with different concentrations and combinations of biocides that all are equally effective in preventing fouling. What distinguishes them is the anticipated risk to the environment. The formulas can therefore be adapted effectively to different conditions. The substances that the researchers have selected, in addition to medetomidine, are biocides that are on the market today and that will probably pass the ongoing evaluation under the EU Biocidal Products Directive.

Another common problem with present-day hull paints is that the active substances leach out too quickly. Large amounts of biocides are therefore needed for the paint to be effective over a long period.

"By using what are known as microcapsules, a microscopic bubble of polymer material containing dissolved bioicides, we can control release better. This technique works for virtually any biocide."


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Contact: Hans Blanck
hans.blanck@dpes.gu.se
46-031-786-2609
University of Gothenburg
Source:Eurekalert  

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