Calcium Carbonate 5970 Calcium carbonate 1317-65-3 Whittaker Extenders / Fillers >> Calcium Carbonate, precipitated Rubber - Elastomer (Chloroprene, Butyl …) ADHESIVE SEALANT Calcium Carbonate - Technical Grade (Precipitated - Surface Treated) Coatings - Calcium carbonate is used in coatings as a filler and extender pigment. The use of precipitated calcium carbonate increases the viscosity and stability of coatings systems, while providing good dry hiding and gloss retention. Polymers - Precipitated calcium carbonates are commonly used as functional fillers in rubber and plastics. The presence of the calcium carbonate affects the rheological properties of the polymeric systems and improves many of the physical properties such as, mar resistance, impact resistance and dielectric properties to name a few. Paper - In the alkaline process for paper, calcium carbonate is used as a filler and a paper coating. It yields finished paper with a high brightness and improved printability. Other - Precipitated calcium carbonates are also used in adhesives, sealants, soft scrub cleansers, as carriers and diluents in agriculture products, as an additive in glass and metallurgical fluxes, etc. Low-cost fillers, increased opacity. Precipitated, surface treated, calcium carbonate. Used as a filler in adhesives and sealants. Offers increased opacity.