Patent ID: 7300974
Filing Date: 2007-11-27
Classification: C01F,C01P,C08K,C09D,C09K

Abstract:
1. A sealant or coating or adhesive which comprises a rheology regulator comprising a natural calcium carbonate, crushed to a high degree of fineness, with a specific surface area of around 14 to 30 m 2 /g measured according to the BET method to ISO 4652, wherein when 50-100% of a precipitated calcium carbonate present in a polyvinyl chloride-based plastisol is replaced with said rheology regulator, and said plastisol is subjected to a viscosity test according to DIN 125 at 20° C., the viscosity at 300 s −1 is less than the viscosity obtained for the plastisol containing said precipitated calcium carbonate, and which rheology regulator further comprises a polyurethane with terminal silane groups and a plasticiser of the phthalate type.