Method for producing silicone emulsions

A method for producing an emulsion of organopolysiloxanes, comprising the steps of:

• in a first step, mixing by stirring and/or homogenization
• (a) polyorganosiloxanes containing units of the formula
• R2a(R1O)bSiO(4-a-b)/2 (I),
• where
• R2 each are identical or different monovalent, optionally substituted hydrocarbon radical having 1 to 30 carbon atoms or hydrogen,
• R1 each are identical or different hydrogen or a monovalent, optionally substituted hydrocarbon radical,
• a is 0, 1, 2 or 3 and
• b is 0, 1, 2 or 3,
• with the proviso that the sum a+b≦3, the organopolysiloxanes contain 5 to 500 units of the formula (I), and b is other than 0 in at least one unit,
• (b) nonionogenic emulsifiers,
• (c) water, and
• optionally
• (d) further substances to obtain an emulsion;
• in a second step, adding (e) acidic surface-active compounds of the formula
• (RO)nP(O)(OH)(3-n) (II),
• where
• R each are identical or different monovalent hydrocarbon radicals having 4 to 30 carbon atoms and
• n is 1 or 2,
• to the emulsion at a temperature below 30° C., after optionally cooling the emulsion obtained in the first step to a temperature below 30° C., and condensing the polyorganosiloxanes (a) until a desired viscosity is reached, obtaining a mixture;
• and
• in a third step, mixing the mixture obtained in the second step with a base (f) so that a pH of a resulting emulsion is greater than 5, and optionally adding additional water (c) and/or further substances (d).