摘要:
Bisazo compounds useful as charge generating materials having formula (I) are disclosed: ##STR1## wherein R represents hydrogen, an alkyl group having 1 to 4 carbon atoms, an alkoxyl group having 1 to 4 carbon atoms or a nitro group.
摘要:
A novel azo compound, which has a high dichroic ratio as well as a high solubility in liquid crystals, and a liquid crystal composition containing the same as disclosed. The liquid crystal composition enables an excellent and clear color display.
摘要:
Compounds of the formulae I and II ##STR1## in which A is a radical of the formulae III, IV or V ##STR2## R.sub.1 and R.sub.4 are --H or --Cl, R.sub.2 and R.sub.5 are --H, halogen, --NO.sub.2, --CN, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 alkoxy, --CF.sub.3 or phenyloxy which is unsubstituted or substituted by one or two chlorine atoms and/or one or two methyl or methoxy groups, and R.sub.3 is alkyl having at least 10 C atoms, X is a radical of the formulae --NH--, --O--, ##STR3## n is the number 1 or 2, Y is the radical of the formulae --COO--, --OOC--, --CONH-- or --NHCO-- or a radical of the formulae ##STR4## in which R.sub.1 and R.sub.2 are as defined above, D is an aromatic heterocyclic 5- or 6-membered ring, in which the ring contains 1 or 2 N atoms and may additionally contain an O atom or S atom, Z is --H, --Br, --OCH.sub.3, --CN or --NO.sub.2 and X.sub.1 and X.sub.2, independently of one another, are --H, halogen, --CH.sub.3, --OCH.sub.3, --OC.sub.2 H.sub.5 or --NO.sub.2 and X.sub.3 is --H, --NHCO--C.sub.1 -C.sub.4 alkyl, benzoylamino or phenylcarboxamide which are each unsubstituted or substituted on the phenyl ring by one or two chlorine atoms and/or one or two methyl or methoxy groups or an --NHCO--C.sub.1 -C.sub.4 alkyl group, or X.sub.2 and X.sub.3 together with the carbon atom to which they are bound are an aromatic carbocyclic 6-membered ring or an aromatic heterocyclic 5- or 6-membered ring, in which the heterocyclic ring contains 1 or 2 N atoms and can additionally have an O atom or S atom, and Y.sub.1 is --H, --OCH.sub.3, --OC.sub.2 H.sub.5 or --NHCOCH.sub.3, with the proviso that X.sub.3 must not be H, if X is --O-- or --NH--, are highly suitable for the mass coloration of plastics, in particular of polyolefins.
摘要:
Compounds of the formula(B--L).sub.m A--L'--B').sub.n (1),in which A is the radical of a bisazo or trisazo dye, L and L' are organic radicals and B and B' are cyclic organic radicals and at least one of the radicals B and B' has spectral absorption in the UV region and one of the radicals B and B' is different from 2,4-dihydroxyphenyl, m is 1 or 2 and n is 0, 1 or 2.The compounds are suitable for use as image dyes in photographic silver dye bleach materials.
摘要:
Aminoazo compounds of the general formula ##STR1## where A is the radical of a diazo component or coupling component, R is a radical of the formula CN, COOR.sup.1, COSR.sup.1, CONH.sub.2, CONHNH.sub.2, CONH-NH-COR.sup.1, ##STR2## where R.sup.1 is unsubstituted or substituted alkyl, alkenyl, cycloalkyl or aryl, R.sup.2 is hydrogen or unsubstituted or substituted alkyl and R.sup.3 is hydrogen or a radical R.sup.1, Z is amino or R and Z together are a radical of the formula --NHCO--O--CO--, X is hydrogen, chlorine, bromine, methoxy, ethoxy, propoxy, butoxy, phenoxy, methyl, ethyl, propyl, butyl, acetylamino, dimethylamino, diethylamino, carboxyl or --NO.sub.2 and aminobenzoic acid amides, monochloroanilines and dichloroanilines are excluded as diazo components A if R.sup.1 is C.sub.1 --C.sub.4 -alkyl, methoxyethyl or butoxyethoxyethyl. The compounds according to the invention are exceptionally suitable for use as diazo components and intermediates for the preparation of dyes.