Calofort® SV

Calofort® SV by Specialty Minerals is a precipitated calcium carbonate. It is stearate coated white microcrystalline powder characterized by high surface area, controlled particle shape and high whiteness. It consists of fine calcitic crystals with an average particle size of 0.07µm and a 3% stearate coating. Used in PVC plastisols and other sealant formulations where higher structure and slump resistance are required. It can allow partial or total replacement of more expensive thixotropic aids. The surface of Calofort® SV promotes hydrogen bonded networks when used in sealant formulations. These structures readily break down under shear, leading to a reduced viscosity and hence a more readily pumped or sprayed product. It also acts as a reinforcing agent which gives the benefit of high tear and tensile strength in the cured product.