Patent ID: 7053148
Filing Date: 2006-05-30
Classification: C08G

Abstract:
1. A process for manufacturing aqueous dispersions comprising the following successive process steps: a) preparing an anhydrous solution which comprises the components A), B) and C) and optionally a component D), b) dispersing the solution obtained according to step a) in water using a dispersant or a mixture of dispersants, c) removing component C), d) optionally combining the dispersion obtained according to process step c) with an aqueous dispersion which comprises a component D), where, at least for the case where the solution prepared in step a) does not comprise a component D), a process step d) is then carried out after step c), where component A) is a polyorganosiloxane whose end-groups are formed by units of the formula and which contains units of the formula in the chain, where the individual units —Si(R)(R where all radicals R, independently of one another, are a linear or branched alkyl radical having 1 to 20 carbon atoms or the phenyl radical, all radicals R where all of the radicals R where X is a monovalent hydrocarbon radical which contains one or more amino groups and/or one or more hydroxyl groups as substituents, where part or all of the amino groups present are optionally in quaternized form, where component B) is a fluorine-free diisocyanate or polyisocyanate whose NCO groups are 80 to 100% blocked, where component C) is a water-insoluble organic solvent which does not contain any OH groups and whose boiling point at atmospheric pressure is between 30° C. and 200° C. and where component D) is a polymer which contains one or more perfluorinated radicals (R