摘要:
Azo dyestuff ester of the formulaA--N.dbd.N--B(OR).sub.nwhereinA is a five- or six-membered heterocyclic radical of up to 2 hetero ring atoms selected from nitrogen, sulfur and oxygen, and wherein the heterocyclic ring may be substituted with at least one member of the group selected from halogen, lower alkyl and lower alkoxy; orA is phenyl substituted by at least one member of the group selected from lower alkyl, lower alkoxy, nitro, sulphanato and acylamino;B is benzene, naphthalene or quinoline, optionally substituted with one or two radicals selected from sulphanato, lower alkoxy and lower alkoxypoly-alkyleneoxy;R is a carboxylic acid residue or an amino acid or peptide residue having a nitrogen protective group; andn is 1 or 2.This dyestuff is particularly useful as a chromogen in a diagnostic composition for detecting leukocytes in body fluids.
摘要:
Novel diagnostic composition for the detection of leukocytes in body fluids, comprising an absorbent carrier impregnated with a buffer substance and a chromgen, wherein the chromogen is an azo dyestuff ester of the formulaA--N.dbd.N--B(OR).sub.nwhereinA is a five- or six-membered heterocyclic radical of up to 2 hetero ring atoms selected from nitrogen, sulfur and oxygen, and wherein the heterocyclic ring may be substituted with at least one member of the group selected from halogen, lower alkyl and lower alkoxy; orA is phenyl substituted by at least one member of the group selected from lower alkyl, lower alkoxy, nitro, sulphanato and acylamino;B is benzene, naphthalene or quinolone, optionally substituted with one or two radicals selected from sulphanato, lower alkoxy and lower alkoxypoly-alkyleneoxy;R is a carboxylic acid residue or an amino acid or peptide residue having a nitrogen protective group; andn is 1 or 2.
摘要:
Disperse monoazo dyes, useful for the dyeing and printing of polyester, polyamide and cellulose acetate fibers in navy-blue shades, having the formula ##STR1## wherein R.sub.1 is Br, Cl or CN; R.sub.2 is CN or NO.sub.2 ; is C.sub.2-4 --alkylene; and R.sub.4 is a selected aliphatic, cycloaliphatic, or aromatic radical.
摘要:
Compounds of the formula, ##STR1## in which R.sub.1 and R.sub.3, which may be the same or different, each signifies hydrogen, hydroxyl, chlorine, bromine, alkyl(C.sub.1-4), alkoxy(C.sub.1-4), alkyl(C.sub.1-4)-carbonyl, alkoxy(C.sub.1-4)-carbonyl, alkyl(C.sub.1-4)-carbonylamino or alkoxy(C.sub.1-4)-carbonylamino,R.sub.2 signifies hydrogen; alkyl(C.sub.1-4)-carbonyl; alkoxy(C.sub.1-4)-carbonyl; benzoyl; unsubstituted alkyl(C.sub.1-4); or alkyl(C.sub.1-4) monosubstituted by alkoxy(C.sub.1-4), phenoxy, benzyloxy, halo or hydroxy,R.sub.4 signifies nitro or cyano, andR.sub.5 signifies chlorine or bromine, their production and use as disperse dyes for substrates comprising high molecular weight hydrophobic polymers such as polyesters, cellulose acetates and synthetic polyamides. The dyeings exhibit good fastness to light, heat treatments, wet treatments, solvents, lubricants, rubbing, cross-dyeing, ozone, flue gas and chlorine.
摘要:
Water-insoluble monoazo dyestuffs of the formula
IN WHICH A represents the radical of a diazo component, B represents a paraphenylene residue that may be substituted, R1 represents an alkyl group that may be substituted by groups other than benzoyloxy groups and R2 represents a residue of the formula -alkylene-O-COR3, in which R3 represents a benzene residue free from hydroxyl or carbalkoxy groups, a phenalkyl group, a styryl group, a five-membered heterocyclic residue or a nitrogen-free, six-membered heterocyclic residue, are useful for dyeing or printing polyester fibers in orange to blue tints fast to light and sublimation.