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High-Solids Alkyd Strategy

SpecialChem / Paint Coatings Industry – Sep 12, 2007

This article presents new possible approaches for alkyd resin architecture in order to comply with market constraints related to VOC emissions. Examples and performance of alkyd concepts are presented with regard to VOC content and performance for "interior/exterior trim and cladding paints for wood and metal". New regulations related to emissions/VOC content in coatings and increasing oil prices strongly recommend the shift to waterborne and high solids for coating manufacturing technology. In Directive 2004/42/CE, from the European Parliament and the Council, limitations are established for the maximum VOC in decorative paints to be used within the EU. The products covered by the Directive are for use on buildings, trims, fittings and structures associated with buildings. Specific sub-categories are listed in the Directive with different limitations for maximum VOC in g/L of the ready-to-use product with two sets of limits for each sub-category. The first set of limit values will apply from 1 January 2007 and the second, stricter set, from 1 January 2010.

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