Predispersed Nanoparticles and Their Influence on Sustainably for Coatings

R. McMullin
BYK USA Inc, US

Keywords: predispersed

Summary:

This paper will discuss the different mechanisms for increasing the sustainably of solvent and water borne coatings by incorporation of predispersed Nanoparticle Oxides. These nano oxides provide better wear and UV protection and are not released as nanoparticles into the environment. As demand for everlasting coatings continues, there are questions regarding the impact of released nanoparticles from normal use and wear. Initial results from testing in conjunction with the German Paint Association show that nanoparticles remain confined within the resin matrix and do not release as individual nanoparticles. Recently introduced additives containing Alumina, Silica, Ceria, MWCNT, and Zinc Oxide Nanoparticles can provide improved wear and UV resistance for solvent, waterborne and UV coatings. These new nano particles are predispersed in different media and easily incorporated with low shear into aqueous, solvent borne, or solvent free UV- curing systems. Typically, low dosages of 0.5 – 2.0% provide significant and long-term scratch, mar, wear and UV resistance without adversely affecting gloss, color, clarity or other physical properties of the coatings.