Building a Macroeconomic Multidimensional Statistical Data Warehouse for Beijing E-Government

Azo dyestuffs of the formula wherein X denotes hydrogen, nitro or COOR1, B denotes R or acyl, R denotes hydrogen or a hydrocarbon, R1 denotes alkyl or cycloalkyl, A denotes alkylene, n denotes the numbers 3-8 and K denotes a coupling component of the pyrazole, pyridine, indole or pyrimidine series, are outstandingly suitable for dyeing synthetic fibre materials, especially made of polyesters, on which they produce dyeings with good fastness to sublimation, washing and light. It is particularly advantageous to use the dyestuffs in the form of preparations which, in addition to the dyestuff, contain emulsifiers, since in a dyebath these are present in the liquid form and therefore do not require the addition of carriers.