Patent ID: 7972424

Claim:
A process for preparation of a hydrophobicizing, water-redispersible additive based on fatty acids and their derivatives comprising admixing a) from 30 to 95% by weight of one or more water-soluble protective colloids, b1) from 5 to 70% by weight of one or more compounds selected from the group consisting of fatty acids and fatty acid derivatives, which under alkaline conditions liberate fatty acid or liberate the corresponding fatty acid anion, b2) optionally, one or more organosilicon compounds, and c) from 0 to 30% by weight of antiblocking agents, the data in % by weight being based on the total weight of the additive and totaling 100% by weight, wherein said step of admixing comprises stirring components b1) and b2) into an aqueous solution of the protective colloid a) followed by drying to form a powdery dried additive.