Process for incorporating photographic additives in hydrophilic colloid preparations

A process for incorporating photographic additives which are sparingly soluble to insoluble in water into a free-flowing, aqueous preparation which contains a hydrophilic colloid and is used to prepare photographic layers, which comprises mixing the photographic additives with

• (a) at least one dispersing assistant of the formula ##STR65## (b) at least one dispersing assistant of the formula ##STR66## in which R.sub.1, R.sub.2 and R.sub.3 are each hydrogen, chlorine, bromine, alkyl having 1 to 8 carbon atoms, which can be substituted by phenyl, or cycloalkyl having 5 or 6 carbon atoms, R.sub.4 is hydrogen or methyl, R.sub.5 to R.sub.8 are each hydrogen, chlorine, bromine or alkyl having 1 to 8 carbon atoms, R.sub.9 to R.sub.14 and R.sub.22 to R.sub.27 are each hydrogen, chlorine or bromine and R.sub.15 to R.sub.21 are hydrogen, chlorine, bromine or alkyl having 1 to 30 carbon atoms, at least one of the radicals R.sub.1, R.sub.2 or R.sub.3 being alkyl having at least 3 carbon atoms or cycloalkyl having 5 or 6 carbon atoms, at least one of the radicals R.sub.15 to R.sub.17 and at least two of the radicals R.sub.5 to R.sub.8 and at least two of the radicals R.sub.18 to R.sub.21 being alkyl having at least 3 carbon atoms, the sum of the carbon atoms in the radicals R.sub.5 to R.sub.8 and R.sub.18 to R.sub.21 being at least 8 in each case and at least 50% of all the R.sub.4 radicals in the formulae (1) to (6) being hydrogen, Z is hydrogen or ##STR67## Y.sub.1, Y.sub.2 and Y.sub.3 are each a radical of the formula ##STR68## M is hydrogen, an alkali metal or ammonium, m is an integer from 1 to 5 and n.sub.1 is an integer from 4 to 100, n.sub.2 to n.sub.5 are integers and the sum of (n.sub.2 +n.sub.3) and of (n.sub.4 +n.sub.5) is 8 to 200 in each case, n.sub.6 is an integer from 1 to 60 and n.sub.7 to n.sub.10 are integers and the sum of (n.sub.7 +n.sub.8) and of (n.sub.9 +n.sub.10) is 2 to 40 in each case, and, optionally, (c) a solvent which is immiscible with water and then finely dispersing the mixture in an aqueous solution of the hydrophilic colloid, which, optionally, contains further water-soluble or dispersed water-insoluble constituents.