ETHEREAL GLYCOCONJUGATED AZODYES (GADs), A NEW GROUP OF WATER SOLUBLE, NATUYRALIZED DYES

This report deals with azodyes naturalised through glycoconjugation with a very common saccharide – lactose – and with its galactose and glucose components. The conjugation takes place through a bifunctional linker, here a terminal dibromo-alkane, so the final products are very stable diether derivatives of the starting dyes. These transformations produce naturalised dyes – indeed, water-soluble and multipurpose –that are able to dye different materials without addition of chemical additives such as surface agents.