Monoazo and disazo dispersion dyestuffs containing a 2-hydroxy - 5-beta-cyano-,beta-lower alkoxycarbonyl- or beta-carboxamidoethyl benzene group
Abstract
Abstract WHEREIN Y REPRESENTS THE CYANO GROUP OR A FUNCTIONAL DERIVATIVE OF THE CARBOXYL GROUP, WHICH DOES NOT DISSOCIATE ACID IN WATER AND THE BENZENE RING MAY CONTAIN FURTHER SUBSTITUENTS; THESE NOVEL DYESTUFFS MUST BE FREE FROM WATERSOLUBILIZING GROUPS THAT DISSOCIATE ACID IN WATER, AND ARE USEFUL AS DISPERSION DYESTUFFS FOR THE DYEING OF HYDROPHOBIC AND PARTICULARLY OF POLYGLYCOL TEREPHTHALATE AND CELLULOSE ESTER FIBRES. THEIR AFFINITY FOR POLYESTER FIBERS, PARTICULARLY POLYGLYCOL TEREPHTHALATE, IS STRONG AND THE DYED FIBERS HAVE GOOD FASTNESS TO LIGHT AND SUBLIMATION, THEIR COLORATION BEING GENERALLY YELLOW, GREENISH YELLOW, ORANGE OR YELLOW-BROWN. 2-(HO-),5-(Y-(CH2)2-)-PHEN-1-YL MONOAZO AND DISAZO DYESTUFFS ARE DESCRIBED WHICH ARE CHARACTERIZED BY A NOVEL COUPLING COMPONENT OF THE FORMULA
Inventors
- 👤 Francois Favre
Bibliographic Details
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