| 摘要 |
<p>1. A water-soluble disazo compound which conforms to the general formula (1) see diagramm : EP0231836,P19,F1 in which D is the 4,6,8-trisulfo-naphthyl-2- radical ; R**1 is a hydrogen atom, an alkyl group of 1 to 4 carbon atoms, an alkoxy group of 1 to 4 carbon atoms, the ureido group or an alkanoylamino group of 2 to 5 carbon atoms ; R**2 is a hydrogen atom, an alkyl group of 1 to 4 carbon atoms or an alkoxy group of 1 to 4 carbon atoms, R**3 is a hydrogen atom, an alkyl group of 1 to 4 carbon atoms, an alkoxy group of 1 to 4 carbon atoms, the ureido group or an alkanoylamino group of 2 to 5 carbon atoms ; 4 is a phenylene radical which can be substituted by 1 or 2 substituents from the group alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, chlorine, bromine, carboxyl and sulfo ; Y is the vinyl group or an ethyl group which is substituted in the beta-position by a substituent which is eliminatable under alkaline conditions.</p> |
