| 摘要 |
A process for producing granulates of water-soluble dyes by means of fluidized bed granulation, wherein there is added a granulating auxiliary having a softening point or softening range between 30 DEG and 150 DEG C. and consisting of (a) at least one compound of the formula I A-(CH2CH2O)n-H (I) in which A is the group R-O- or <IMAGE> wherein R is an aliphatic or alicyclic hydrocarbon radical having 8 to 22 carbon atoms, R' is an aliphatic hydrocarbon radical having 8 to 22 carbon atoms, and n is 10 to 200, preferably 20 to 150, or (b) a mixture of a compound of the formula II <IMAGE> (II) in which m is 50 to 500, and x is 3 to 5, with a compound of the formula III R1-NH-CO-NH-R1 (III), in which each R1 independently of the other is hydrogen or methyl, or (c) a mixture of a compound of the formula I with at least one compound of the formula II or III. |
