COATING OF GRANULES WITH NANOSCALE SILICA

摘要

The present invention relates to granules of copolymers coated with a coating based on silica particles acting as anti-clumping agent, said copolymers being chosen from ethylene/vinyl acetate (VA) copolymers having a vinyl acetate content of greater than 25 wt% and a melt flow index within the range from 1 to 3000 g/10 min at 463 K under a load of 21.19 N, the diameter of said particles being between 5 and 50 nm and the silica particle content being between 100 and 5000 ppm. The ethylene/vinyl acetate copolymer granules coated with this anti-clumping agent have the advantage of being transparent when they are dissolved in organic solvents for appropriate application in printing inks.