摘要:
Benzoxanthene- and benzothioxanthene-dicarboxylic acid imide dyestuffs of the general formula ##SPC1##WhereinX is oxygen or sulfur,R is amino which is substituted by one or two members of the group of alkyl, cyclohexyl, benzyl, acyl, phenyl, .beta.-cyanoethyl, .beta.-hydroxyethyl, sulfamidophenyl, benzoyl, dichlorobenzoyl, sulfamidobenzoyl, carboxamidophenyl, phenylsulfonyl sulfamidodichlorobenzoyl, chlorophenyl, phenoxyacetyl lower alkylsulfamidobenzoyl and benzimidazdyl,R.sub.1 and R.sub.2 are hydrogen chlorine, bromine, cyano, lower carbalkoxy, lower alkyl, lower alkoxy and phenyl,R.sub.3 and R.sub.4 are hydrogen, lower alkoxy and lower hydroxy alkoxy.
摘要:
Treating compounds of the formula ##STR1## in which the nuclei marked "A" and "B" can be substituted by halogen, lower alkyl, lower alkoxy or phenyl, with acid binding agents at elevated temperatures in polar organic solvents yields compounds of the formula ##STR2## in which A and B have the same meaning. The products are dyestuffs of high brillancy, pure shades, high fluorescence, excellent tinctorial strength and good fastness to light.
摘要:
When reacting a dyestuff having hydroxy, acyloxy, carboxy or carbalkoxy groups with a polyester derived from terephthalic and/or isophthalic acid and, per mol of dicarboxylic acid, about 0.75 to 1.5 mol of a low-molecular alkanetriol with primary alcohol groups (methylol groups) or, instead of said polyester, with the corresponding starting materials or precondensates, a polyester with chemically linked dyestuff units is obtained which is useful for dyeing plastics, especially polyolefins. The dyed plastic materials are heat resistant, even when containing fluorescent dyestuff units, transparent and uniformly dyed.
摘要:
The invention relates to perylene-3,4,9,10-tetracarboxylic diimides of the formula (I) ##STR1## in which R is a 3'- and/or 4'-methoxybenzyl radical, and their preparation and use as black pigments, inter alia in paint preparations, printing inks or for the dyeing of polymers.
摘要:
Compounds of the formula ##STR1## in which R denotes hydrogen, hydroxyl, amino or optionally substituted alkyl, X denotes chlorine or bromine and n is a number from zero to 4, are obtained from the corresponding mono-alkali metal salts of perylene-3,4,9,10-tetracarboxylic acid monoanhydrides by reaction with compounds of the formula R--NH.sub.2, in which R has the above meaning, at 0.degree.-130.degree. C. The compounds are colorants or starting materials for colorants.
摘要:
Perinones of the formula ##STR1## IN WHICH A represents an ortho- or peri-arylene radical or a heterocyclic radical, and n represents the number 1 or 2 and m = 1 if n = 1 and m = 0 if n = 2, are obtained by reacting a 3,6-dihydroxynaphthalic anhydride with an aromatic or heterocyclic ortho- or peri-diamine or tetramine or the salts thereof. The products are valuable pigments.
摘要:
Process for preparing perylenetetracarbimide mix-crystal pigments in the crystal lattice of the .alpha.-modification of the N,N'-bis-3',5'-dimethylphenylperylenetetracarbimide of the formula (1) comprising essentially symmetrical N,N'-bis-3',5'-dimethylphenylperylenetetracarbimide of the formula (1) and at least one asymmetrically substituted diimide of the formula (2) in which R stands for methyl or ethyl ##STR1## by condensing 1 mole of perylenetetracarboxylic dianhydride with an excess of up to 30 moles of 3,5-dimethylaniline which contains in total 0.5-6 percent by weight of 4-ethoxyaniline, and their use for coloring organic polymers.
摘要:
Compounds of the formula ##STR1## in which R denotes hydrogen, hydroxyl, amino or optionally substituted alkyl, X denotes chlorine or bromine and n is a number from zero to 4, are obtained from the corresponding mono-alkali metal salts of perylene-3,4,9,10-tetracarboxylic acid monoanhydrides by reaction with compounds of the formula R-NH.sub.2, in which R has the above meaning, at 0.degree.-130.degree. C. The compounds are colorants or starting materials for colorants.
摘要:
Water-soluble dyestuffs of the formula ##STR1## in which Y is oxygen or an imino group, R.sup.1 and R.sup.2 are hydrogen, halogen or lower alkyl or lower alkoxy, n is 1 to 3 and Z is a cation, are useful for fluorescent inks.
摘要:
Novel aromatic o-hydro-aldehydes of the formula ##STR1## have been found wherein each X is a carboxy group or both X together are a group of the formula ##STR2## wherein R stands for hydrogen, an optionally substituted amino group, optionally etherified hydroxy group, an optionally substituted aliphatic, cycloaliphatic, aromatic or heterocyclic radical, and A for an optionally substituted phenylene or naphthylene radical. They are valuable intermediate products for the preparation of dyestuffs, optical brighteners, textile auxiliaries and pharmaceutica and are particularly suitable for the preparation of azo-methine dyestuffs which are obtained by condensation of these aldehydes with suitable amines.