摘要:
The novel aminomethylnaphthalenecarboxylic acid dyestuffs of the formula (I) ##STR1## in which the substituents and indices have the meaning given in the description, are outstandingly suitable for dyeing cellulosic materials, in particular paper.
摘要:
Disazo dyes of the general formula I ##STR1## where R is an araliphatic or aromatic radical, X.sup.1 is ##STR2## X.sup.2 is hydrogen, phenyl or an aliphatic or araliphatic radical, R.sup.1 is hydrogen or an aliphatic, cycloaliphatic, araliphatic or aromatic radical, the rings A, B and C may be substituted and the rings B and C may carry a fused benzo ring, and the group ##STR3## may also be a heterocyclic radical of the formula ##STR4## The novel dyes are very suitable for dyeing polyesters and cellulose.
摘要:
Water-soluble disazodyestuffs of the formula ##STR1## in which R.sub.1 and R.sub.2 are identical or different and each is hydrogen, methyl, ethyl or methoxy, and R.sub.3 is hydrogen, chlorine, nitro or alkyl of 1 to 4 carbon atoms, and their salts have been found which possess very good dyeing characteristics and are very well suitable for dyeing of synthetic polyamides and yield dyeings on these fibers with good to very good wet fastnesses and fastnesses to processing and to use. In accordance with this, an improved process had been found for coloring synthetic polyamide fibres by applying the above dyestuffs of the invention on said fibres in usual dyeing and printing methods and fixing them on the fibre by methods as usual in the art.
摘要:
A process for the preparation of diazo pigment mixtures, which comprises condensing 2 mol of an azocarboxylic acid chloride of formula ##STR1## with 1 mol of a mixture of diamines of formulae ##STR2## at a molar ratio of II:III:IV from 0-30:5-60:40-95,the condensation and isolation of the product obtained being carried out by customary methods.The diazo pigment mixtures so obtained are distinguished by high color strength and chroma.
摘要:
The present invention concerns the disazo pigment of the formula ##STR1## The new pigment is useful for coloring plastic material in pure red shades of high tinctorial strength and outstanding fastness to light and migration.
摘要:
A nondiffusible sulfonamido compound which is alkali-cleavable upon oxidation to release a diffusible photographically useful material, said nondiffusible sulfonamido compound having the formula: ##STR1## wherein: (a) R.sup.1 is alkyl, aryl sulfamyl, carbamyl, carbonamido, carbonyl, carbonyloxy or sulfonamido;(b) R.sup.2 is alkyl having from 1 to 18 carbon atoms, aryl, or alkylphenyl having from 7 to 12 carbon atoms;(c) R.sup.3 and R.sup.4 are independently alkyl, or aryl, or R.sup.3 and R.sup.4, taken together, form a fused carbocyclic or heterocyclic ring;(d) NHSO.sub.2 PUG represents a sulfonamido group;(e) PUG represents a photographically useful group; and(f) at least one of R.sup.1, R.sup.2, R.sup.3, or R.sup.4, or any combination thereof, provides a molecular configuration of such size or shape as to render the compound nondiffusible under alkaline processing conditions, is useful as redox releaser in photosensitive elements, photographic film units and in processes for transferring and/or retaining a photographic image in color diffusion transfer units. These elements, film units and processes produce retained color images having substantially reduced minimum densities.