Most synthetic pigments produced by industry are pure chemical compounds, but natural inorganic pigments are processed minerals. The impurities in natural pigments may vary significantly from source to source. Even though physical appearance and some physical properties are similar, the presence of some chemical impurity may impair the performance of the final coatings. Such pigments must therefore be characterized for chemical purity before incorporation in a coating formulation.
Chemical and performance properties
12 ноября, 2015 
Pokraskin 
Опубликовано в рубрике Understanding. Coatings Raw Materials