The Application describes disperse dyes soluble in water of general formula (I)
D-L-Sn (I)
wherein:
D is a disperse dye insoluble in water
L is a linker
S is a sugar
n is comprised between 2 and 4
that are able to dye in an homogeneous way natural fibres and textiles and also textile materials including different fibres, and have high biodegradability through digestion by micro organisms, that found in the molecule itself a useful nourishment for their survival and proliferation; processes for the preparation of the above said dyes and their use are also described.