Patent ID: 7858573
Filing Date: 2010-12-28
Classification: C11D

Abstract:
1. A process for making a detergent composition, the detergent composition comprising: a) from about 0.1% to about 50% by weight of the composition of a polymer in particulate form, the polymer comprising: b) from about 0.01% to about 10% by weight of the composition of a hydrophobic silica consisting essentially of silicon dioxide particles having chemically modified surfaces rendering the silicon dioxide particles hydrophobic, the silicon dioxide particles having a weight geometric mean particle size from about 1 μm to about 40 μm, the process comprising: a) mixing the polymer with the hydrophobic silica to obtain a polymer/silica premix consisting essentially of particles of the polymer coated with the hydrophobic silica; and b) admixing the polymer/silica premix with any additional powder detergent components after the polymer/silica premix is formed.