摘要:
Dyestuff dispersions and dyestuff solutions free from salt or at least having a low salt content are obtained in that the diazotization is carried out with addition of free dispersing agent acid to which, after the synthesis, either no basic agents are added or basic agents are added only up to a pH value of 3. The disclosed process gives dyestuff compositions of low salt content and results in readily dispersible dyestuffs when water insoluble dyestuffs are prepared and stable solutions when water soluble dyestuffs are prepared. The process is widely applicable and chemical constitution of the dyestuffs is conventional.
摘要:
The invention relates to dyestuff preparations which containA. dyestuffs which are insoluble in tetrachloroethylene,B. dispersing agents of the formulaR.sup.1 [--NHCO--(O--CHR.sup.2 --CHR.sup.3).sub.X --(O--CHR.sup.4 --CHR.sup.5).sub.y --R.sup.6 --].sub.nwhereinR.sup.1 denotes a hydrocarbon radical such as remains after removing n isocyanate groups from a corresponding isocyanate,n is a number from 1 to 6R.sup.2 - r.sup.5 denote hydrogen, alkyl, phenyl or chloromethyl,X represents the number 0 - 100 andY represents the number 0 to 50 andR.sup.6 denotes O--aryl, O--aralkyl, O--alkaryl, O--CO--alkyl, O--CO--aryl, NH--CO--alkyl, NH--SO.sub.2 --alkyl or O--alkyl andC. optionally, organic solvents of low volatility. The preparations are extremely suitable for the dyeing textile materials from organic, water-immiscible solvents.
摘要翻译:本发明涉及含有A.DYESTUFFS的染料制剂,其在四氯乙烯中不溶,B.分子式R1 [-NHCO-(O-CHR2-CHR3)X-(O-CHR4-CHR5)y -R6-] n其中R1表示烃基,例如从相应的异氰酸酯除去n个异氰酸酯基后的残基,N 1 A 1从1到6 R 2 -R 5表示氢,烷基,苯基或氯甲基,X表示数字0-100,Y表示 0至50,R6表示O-芳基,O-芳烷基,O-烷芳基,O-CO-烷基,O-CO-芳基,NH-CO-烷基,NH-SO2-烷基或O-烷基和C。 有选择的低挥发性有机溶剂。 该制剂非常适用于有机,与水不混溶的溶剂的染色纺织品。
摘要:
The effluent produced in the production of copper phthalocyanine according to the usual methods, containing by-products of the reaction and copper and molybdenum salts is advantageously purified by bringing it to a pH of between 3 and 9 and separating off the precipitate. The precipitate can be added to the starting components of the copper phthalocyanine production.