In general, polyurethane coatings offer few pigmentation problems. Care should be taken to control the residual moisture content of pigments since the reaction between water and the isocyanate can affect the pot life and lead to the formation of carbon dioxide resulting in film defects.
Pigmentation
27 августа, 2015 
Malyar 
Опубликовано в рубрике Waterborne & Solvent Based Acrylics and their End User Applications