Polcarb S Coated calcium carbonate Imerys Extenders / Fillers >> Calcium Carbonate, ground Rheology Modifiers / Thickeners >> Mineral >> Precipitated calcium cabonate Acrylics/ Acrylates Polysulfides Silicones (Si) PU - Prepolymers Polyvinyl Chloride (PVC) SEALANT >> Putty SEALANT >> Plastisol Calcium carbonate. Fine ground calcium carbonate is used in a wide range of sealant and adhesives applications to improve rheological properties and reduce water or volatile content of the compound. Polcarb S rheology modification Application: polysulfide, hot melt, bitumeous and polyurethane selants for construction, silicone and hybrid polymer sealants, PVC plastisols, sealant tapes/strips, cavity fillers for automotive, acrylic sealants, and putties and mastics. Fine ground calcium carbonate. Used in polysulfide, hot melt, bitumeous and polyurethane selants for construction, silicone and hybrid polymer sealants, PVC plastisols, sealant tapes/strips, cavity fillers for automotive, acrylic sealants, and putties and mastics. Provides rheology modification.