Amphiphilic copolymers as surface modifiers for improved calcium carbonate powder production

摘要

The present disclosure includesA method for manufacturing surface modified calcium carbonateCalcium carbonate or its precursorIncluding the step of contacting the hydrophilic subunit and at least one amphiphilic copolymer comprising a hydrophobic subunitHydrophilic subunitDerived from at least one ethylenic unsaturated compound containing a carboxylic acid group or its salt or derivativeHydrophobic subunitDerived from at least one ethylenic unsaturated compound containing a hydrophobic groupAmphiphilic copolymerHaving about 1 to about 40 hydrophilic lipophilic balancesMethod.The surface modified calcium carbonate obtained by this method and the composition containing the surface modified calcium carbonate are also described.