Patent ID: 8926747
Filing Date: 2015-01-06
Classification: C01P,C08K,C09C,D21H

Abstract:
1. A calcium carbonate coating dispersion for use in the paper industry containing co-grinded natural calcium carbonate (GCC) and 5 to 70% by weight of precipitated calcium carbonate (PCC), said GCC and PCC having a particle size distribution with at least 90% by weight of smaller than 5 μm, at least 70% of weight of smaller than 2 μm, and at least 20% by weight of smaller than 1 μm, with a weight average particle size within a range of from 0.7 to 3 μm, said GCC and PCC coated with a polymer selected from styrene/acrylic acid or styrene/acrylate or styrene/butadiene/acrylic acid or styrene/butadiene/acrylate.