Complex inorganic color pigments (CICPs) provide enhanced performance in Heat and chemical stability, UV opacity, hiding power, and infrared (IR) reflectivity. They are also referred to as ceramic pigments and are used because they can stand the heat of the ceramic firing process.
When pigments are needed for exterior durable, especially in concrete or high heat coatings, physical and spectral features other than color are an equally important consideration. Heat and chemical stability, UV opacity, hiding power, and infrared (IR) reflectivity are important attributes in such coatings. Complex inorganic color pigments (CICPs) provide enhanced performance in these key areas. CICPs are very stable pigments, and for all practical purposes are chemically inert. They can withstand the most chemically aggressive environments and still retain their color. They will not fade in the presence of ozone, acid rain, SOx, NOx or other air pollutants common in industrialized areas. They will even remain colorfast in the presence of strong acids, bases, oxidizing or reducing agents. They are non-migratory, and will not dissolve or bleed in contact with solvents.
In addition to excellent chemical stability, CICPs are also the most heat stable type of pigments known. They are made at very high temperatures in a process called calcination. Metal oxides or oxide precursors are blended together and then strongly heated, generally at temperatures over 1,600°F. At the calcining temperature the solids themselves become reactive. Metal and oxygen ions in the solids rearrange to a new, more stable structure, forming the CICPs.