peinture antisalissures de libre association à base de tributylétain

CONT: Années 70. Apparition de peintures antisalissures de libre association à base de tributylétain.

CONT: Two kinds of TBT-containing paints are known. Free-association paint, made by mixing TBT into the paint, dissolves when it contacts water. All of the TBT is leached out from the paint in 12-24 months. In copolymer paint, the TBT is bound to the paint and slowly releases with water movement, and is effective for five to six years ...
CONT: Historically, tributyltin (TBT) free-association paints were used. Free association paints are where the active ingredients are dispersed in a resinous matrix and from which they can slowly leach . This type of paint system has been the basis of most traditional antifouling paints ... It is difficult to control the rate of release of biocides from a free-association paint system so as to provide a constant leaching level. Paints containing freely associated biocides such as copper compounds and TBT, can give rise to high initial concentrations of biocides in the marine environment.