摘要:
Basic azo dyestuffs of the general formula ##STR1## and tautomers thereof, in which D is the radical of a diazo or tetrazocomponent free of anionic groups,X is O or NH,R.sup.1, R.sup.2 are hydrogen, alkyl or aryl,B is a bridge member andR.sup.3, R.sup.4 are hydrogen, alkyl, alkenyl or aralkyl orR.sup.2 and R.sup.3 together with B and the two nitrogen atoms to which they are bonded form a 5- or 6-membered heterocyclic and in this caseB also stands for a direct bond, orR.sup.3 and R.sup.4 together with the nitrogen atom to which they are bonded form a 5- or 6-membered heterocyclic,n is 1 or 2, and in whichthe cyclic and acyclic radicals can in turn be substituted by radicals customary in dyestuff chemistry, find utility for dyeing and coloring synthetic and natural materials.
摘要:
Described are dyes of formula (I) where R1 is hydrogen, alkyl, alkoxy, trifluoromethyl or halogen, M is hydrogen, an alkali metal cation or an optionally substituted ammonium cation, R2 and R3 are each independently hydrogen, alkyl or alkoxy, R4 is alkyl or alkoxy, R5 and R6 are each independently moieties of the formula —(CmH2m)—O—CnH2n+1, m is an integer from 3 to 6, and n is an integer from 0 to 8. These dyes are useful for dyeing and printing materials having polar groups.
摘要:
Described are dyes of formula (I) where R1 is hydrogen, alkyl, alkoxy, trifluoromethyl or halogen, M is hydrogen, an alkali metal cation or an optionally substituted ammonium cation, R2 and R3 are each independently hydrogen, alkyl or alkoxy, R4 is alkyl or alkoxy, R5 and R6 are each independently moieties of the formula —(CmH2m)—O—CnH2n+1, m is an integer from 3 to 6, and n is an integer from 0 to 8. These dyes are useful for dyeing and printing materials having polar groups.
摘要:
Fibre-reactive dyestuffs based on barbituric acid, of the following formula ##STR1## wherein the substituents have the meaning given in the description, are distinguished by improved properties.
摘要:
2-Hydrazono-4,6-dinitrobenzthiazolones of the formula ##STR1## in which X.sub.1 represents hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -hydroxyalkyl, C.sub.1 -C.sub.4 -sulphoalkyl or C.sub.1 -C.sub.4 -sulphatoalkyl, andX.sub.2 represents hydrogen or --SO.sub.2 X.sub.3, whereX.sub.3 may represent hydrogen, C.sub.1 -C.sub.8 -alkyl or optionally substituted aryl andX.sub.1 also represents a double bond between the cyclic nitrogen atom and the carbon atom 2 according to the formula II below: ##STR2## where X.sub.2 has the meaning specified under the above formula. These hydrazones may be employed in the preparation of azo dyestuffs and as color formers for detecting of biological substances, and in the determination of H.sub.2 O.sub.2.
摘要翻译:其中X1表示氢,C1-C4-烷基,C1-C4-羟基烷基,C1-C4-磺基烷基或C1-C4-硫酸烷基的式“IMAGE”的2-肼基-4,6-二硝基苯并噻唑酮,X 2表示氢或 -SO 2 X 3,其中X 3可以表示氢,C 1 -C 8 - 烷基或任选取代的芳基,X 1也表示环状氮原子和根据下式II的碳原子之间的双键:其中X 2具有含义 根据上述公式规定。 这些腙可用于制备偶氮染料和用作检测生物物质的成色剂,并用于测定H 2 O 2。