Microbial commercial activity notice

Some commercial biocides, recommended for WPCs, contain about 30% of the active ingredient and cost around 4.00 per pound. As recommended amounts of active Folpet in plastics and WPCs are between 0.25 and 0.75% (on some other, more optimistic estimates, between 0.2 and 0.3%), it takes between 0.75 and 2.3% (more optimistically, between 0.6 and 0.9%) of the commercial Folpet-based biocide to be added into the formulation. It would cost between 3 and 9 cents per pound of the final formulation (more optimistically, between 2.4 and 3.6 cents per pound of the composite). In many cases, this expense is on a high side in composite materials, because it amounts to 15-50% of all raw material cost (optimistically, 10-15%). Unless the microbial degradation problem for the composite material is really noticeable, manufacturers can hardly afford such an expense. 

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