Gama-Sperse® 80 by Imerys is a dry ground, white calcitic marble (untreated calcium carbonate). Improves rheological, mechanical, dispersion and optical properties. Used in rigid PVC compounds... view more

Treated grounded calcium carbonate. Improves mechanical, rheological, optical and dispersion properties. The coating also makes these fine products less susceptible to moisture pick-up during use... view more