Patent ID: 8980960
Filing Date: 2015-03-17
Classification: B41M,C01B,D21H

Abstract:
1. A process for preparing a dispersion comprising silicon dioxide particles and a cationizing agent, the process comprising: mixing a) 50 to 75 parts by weight of water, b) 25 to 50 parts by weight of silicon dioxide particles having a BET surface area of 30 to 500 m wherein the amount of component c) is determined based on the amount of component b) as follows: the amount of component b) in terms of grams is multiplied by its BET surface area to obtain a total BET surface area in terms of m the total BET surface area is multiplied by 100 to 300 μg/m wherein the cationizing agent is obtained by a process comprising wherein the haloalkyl-functional alkoxysilane has formula (I): wherein: the aminoalcohol has formula (II): wherein: