Abstract: Ternary solid solutions useful as pigments are disclosed. The ternary solid solutions result from incorporating a third component, which is a diketopyrrolopyrrole or quinacridone pigment, into the crystal lattice of the mixed crystal formed from equimolar amounts of two different diketopyrrolopyrrole pigments.

Abstract: Compounds of formulaA(B).sub.x, (I),wherein x is an integer from 1 to 4,A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, isoindolinone, isoindoline, dioxazine, phthalocyanine or azo series, which radical contains x N-atoms attached to B, preferably with at least one directly adjacent or conjugated carbonyl group,B is a group of formula ##STR1## and, if x is 2, 3 or 4, may also be one, two or three hydrogen atoms. The symbols Q, R.sub.1, R.sub.2, R.sub.3, R.sub.4, X, Y, Z, m and n, are as defined in claim 1.These carbamate group-containing soluble chromophores are distinguished by outstanding solid state fluorescence in the UV range as well as the by ease with which they can be converted to the corresponding pigments in the substrate in which they are incorporated.

Abstract: Compounds of formulaA(B).sub.x, (I),wherein x is an integer from 1 to 4,A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, isoindolinone, isoindoline, dioxazine, phthalocyanine or azo series, which radical contains x N-atoms attached to B, preferably with at least one directly adjacent or conjugated carbonyl group,B is a group of formula ##STR1## and, if x is 2, 3 or 4, may also be one, two or three hydrogen atoms. The symbols Q, R.sub.1, R.sub.2, R.sub.3, R.sub.4, X, Y, Z, m and n, are as defined in claim 1.These carbamate group-containing soluble chromophores are distinguished by outstanding solid state fluorescence in the UV range as well as the by ease with which they can be converted to the corresponding pigments in the substrate in which they are incorporated.

Abstract: A liquid crystalline compound of formula ##STR1## wherein B and D are each independently of the other C.sub.6 -C.sub.24 alkyl, ##STR2## L is ##STR3## methyl or C.sub.10 -C.sub.18 alkyl, wherein R.sub.1 is C.sub.4 -C.sub.18 alkyl, with the proviso that when L is methyl, at least one of B and D is C.sub.6 -C.sub.24 alkyl;R2 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen, cyano or nitro,R3, R4 and R5 are each independently of one another hydrogen, OR6, SR6, SeR6, --NHR6, --NR6R7, ##STR4## with the proviso that at least one of R3, R4 and R5 is not hydrogen, R6 is C.sub.7 -C.sub.37 alkyl, C.sub.7 -C.sub.37 alkylene or C.sub.5 -C.sub.18 alkyl which is interrupted by 1 to 6 hetero atoms selected from the group consisting of O, S and N,R7 is hydrogen or R9,R8 is hydrogen or C.sub.1 -C.sub.4 alkyl, andR9 is C.sub.1 -C.sub.12 alkyl, C.sub.2 -C.sub.12 alkylene or C.sub.3 -C.sub.12 alkyl which is interrupted by 1 to 6 hetero atoms selected from the group consisting of O, S and N.

Abstract: Compounds of formulaA(B).sub.x, (I),wherein x is an integer from 1 to 4,A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, isoindolinone, isoindoline, dioxazine, phthalocyanine or azo series, which radical contains x N-atoms attached to B, preferably with at least one directly adjacent or conjugated carbonyl group,B is a group of formula ##STR1## and, if x is 2, 3 or 4, may also be one, two or three hydrogen atoms. The symbols Q, R.sub.1, R.sub.2, R.sub.3, R.sub.4, X, Y, Z, m and n, are as defined in claim 1.These carbamate group-containing soluble chromophores are distinguished by outstanding solid state fluorescence in the UV range as well as the by ease with which they can be converted to the corresponding pigments in the substrate in which they are incorporated.

Abstract: Compositions for making structured color images comprising (a) a soluble pigment precursor which can be transformed to an insoluble pigment by means of chemical, thermal, photolytic or radiation-induced method, and (b) a binder polymer or prepolymer, or a positive or negative resist-type resin which can be structured by crosslinking, polymerization or depolymerization by applying heat or electromagnetic irradiation. The compositions can be applied to optical and thermal recording, printing, and the production of color filters for Liquid Crystal Displays, with high accuracy, high transparency and high stability.

Abstract: Compounds of formulaA(B).sub.x, (I),wherein x is an integer from 1 to 4, A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, isoindolinone, isoindoline, dioxazine, phthalocyanine or azo series, which radical contains x N-atoms attached to B, preferably with at least one directly adjacent or conjugated carbonyl group,B is a group of formula ##STR1## and, if x is 2,3 or 4, may also be one, two or three hydrogen atoms. The symbols Q, R.sub.1, R.sub.2, R.sub.3, R.sub.4, X, Y, Z, m und n, are as defined in claim 1.These carbamate group-containing soluble chromophores are distinguished by outstanding solid state fluorescence in the UV range as well as the by ease with which they can be converted to the corresponding pigments in the substrate in which they are incorporated.

Abstract: Solid solutions consisting of 3,6-bis(biphenyl-4-yl)- 2,5-dihydropyrrolo?3,4-c!pyrrole-1,4-dione and either a) a second 1,4-diketopyrrolopyrrole or b) a quinacridone, which are further defined herein, are outstandingly suited to pigmenting high molecular weight organic material.

Abstract: Compounds of the formulaA(B).sub.x (I),wherein x is an integer from 1 to 4,A is the radical of a chromophore of the phthalocyanine series, which radical contains x B groups attached to N-atoms, preferably with at least one directly adjacent to or conjugated with a carbonyl group,B is a group of the formula ##STR1## and, if x is 2,3 or 4, may also be one, two or three hydrogen atoms, wherein the symbols Q, R.sub.1, R.sub.2, R.sub.3, R.sub.4, Y, Z, m and n, are as defined in the disclosureThese carbamate group-containing soluble chromophores are distinguished by outstanding solid state fluorescence in the UV range as well as the by ease with which they can be converted to the corresponding pigments in the substrate in which they are incorporated.

Abstract: A process for the preparation of mixed crystals of 1,4-diketopyrrolo?3,4-c!pyrroles, consisting of 1 mol each of two different compounds of formula ##STR1## by heating a corresponding mixture in solid form to the temperature range from 220.degree. to 380.degree. C.A and B are, for example, each a group of formula ##STR2## wherein R.sub.1 and R.sub.2 are each independently hydrogen, chloro, bromo, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.6 alkoxy, C.sub.1 -C.sub.6 alkylamino, phenyl or --CN,G is --O--, --NR.sub.7 --, --N.dbd.N-- or --SO.sub.2 --,R.sub.3 and R.sub.4 are hydrogen, and R.sub.7 is hydrogen, methyl or ethyl.The mixed crystals and solid solutions obtained are excellently suited for pigmenting high molecular weight material.

Abstract: Compounds of formulaA(B).sub.x, (I),wherein x is an integer from 1 to 4,A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, isoindolinone, isoindoline, dioxazine, phthalocyanine or azo series, which radical contains x N-atoms attached to B, preferably with at least one directly adjacent or conjugated carbonyl group,B is a group of formula ##STR1## and, if x is 2, 3 or 4, may also be one, two or three hydrogen atoms. The symbols Q, R.sub.1, R.sub.2, R.sub.3, R.sub.4, X, Y, Z, m und n, are as defined in claim 1. These carbamate group-containing soluble chromophores are distinguished by outstanding solid state fluorescence in the UV range as well as the by ease with which they can be converted to the corresponding pigments in the substrate in which they are incorporated.

Abstract: The present invention relates to a solid solution consisting of 60-90 mol-% of an asymmetric 2,5-dihydro-1,4-diketopyrrolo?3,4-c!pyrrole of the formula (I) ##STR1## in which G.sub.1 and G.sub.2 independently of one another are different substituted or unsubstituted aromatic radicals or pyridyl, but the volume of all substituents on G.sub.1 and G.sub.2 is greater than that of two methyl groups;and 40-10 mol-% of a 2,5-dihydro-1,4-diketopyrrolo?3,4-c!pyrrole of the formula (IIa) ##STR2## in which G.sub.3 and G.sub.4 independently of one another are different substituted or unsubstituted aromatic radicals or pyridyl, but the volume of all substituents on G.sub.3 and G.sub.4 is less than that of two butoxy groups;or 40-10 mol-% of a quinacridone of the formula (IIb) ##STR3## in which R.sub.9 is hydrogen, halogen, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy;which is a single-phase solid solution having the crystal structure of the asymmetric 2,5-dihydro-1,4-diketopyrrolo?3,4-c!pyrrole of the formula (I).

Abstract: Compounds selected from the series consisting of the perylenecarboximide, quinacridone, isoindoline, indigoid, azo, benzodipyrrolone, benzodifuranone, furanofuran, pyrrolo?2,5-b!pyrrole and bianthraquinone chromophores containing at least one grouping of formula ##STR1## wherein each A may be N--CN or O, with the proviso that at least one A must be N--CN, X is --N(R)--, --O-- or --S--, R is hydrogen, C.sub.1 -C.sub.18 alkyl, unsubstituted or halogen- or C.sub.1 -C.sub.4 alkyl-substituted phenyl, benzyl or phenethyl, and m and n are each independently of the other 0 or 1.Depending on the nature of their substituents, these compounds can be used as polymer-soluble dyes or as pigments for coloring high molecular weight organic material. They are distinguished by a surprisingly high solid-state fluorescence.

Abstract: 1,4-diketopyrrolopyrroles of the formula ##STR1## in which R.sub.1 and R.sub.2 independently of one another are hydrogen, C.sub.12 -C.sub.24 alkyl, C.sub.6 -C.sub.24 alkyl which is interrupted one or more times by O or S, or are a group of the formula ##STR2## in which R.sub.5 is C.sub.4 -C.sub.18 alkyl or C.sub.5 -C.sub.10 cycloalkyl,R.sub.3 is a polymerizable reactive group,R.sub.4, if R.sub.1 and R.sub.2 are hydrogen, is C.sub.6 -C.sub.24 alkyl which is attached directly or by way of O or S to the benzene ring and is uninterrupted or is interrupted one or more times by O or S, andR.sub.4, if R.sub.1 and/or R.sub.2 are C.sub.12 -C.sub.24 alkyl, is C.sub.6 -C.sub.24 alkyl which is interrupted one or more times by O or S or is a group ##STR3## hydrogen, halogen, methyl, methoxy, CN or phenyl, or is the same as R.sub.3.

Abstract: Compounds of formulaA(B).sub.x, (I),whereinx is an integer from 1 to 4,A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, isoindolinone, isoindoline, dioxazine, phthalocyanine or azo series, which radical contains x N-atoms attached to B, preferably with at least one directly adjacent or conjugated carbonyl group,B is a group of formula ##STR1## and, if x is 2, 3 or 4, may also be one, two or three hydrogen atoms. The symbols Q, R.sub.1, R.sub.2, R.sub.3, R.sub.4, X, Y, Z, m und n, are as defined in claim 1.These carbamate group-containing soluble chromophores are distinguished by outstanding solid state fluorescence in the UV range as well as the by ease with which they can be converted to the corresponding pigments in the substrate in which they are incorporated.

Abstract: The invention is related to an electrophotographic photoreceptor, its preparation, and its use in electrophotography. The instant photoreceptor comprises a conductive substrate and a photosensitive layer containing an organic pigment as a charge generating material, wherein said organic pigment is formed from a soluble organic pigment precursor.Particularly suitable soluble pigment precursors are of formulae (I) or (XIV), ##STR1## wherein A represents a chromophore residue which is a perylene, quinacridone, dioxazine, anthraquinone, azo, phthalocyanine, isoindolinone, isoindoline, indigo, quinophthalone or pyrrolopyrrole with 1 to 5 N atoms bound to the D.sub.1 and D.sub.2 groups, whereby each N atom of A is independently from the other bound to 0, 1 or 2 groups D.sub.1 or D.sub.2 ;D.sub.1 and D.sub.2 are independently a group represented by the general formula ##STR2## x is an integer from 0 to 4; L.sub.1 and L.sub.2 are independently from one other halogen, alkoxy or amino groups, andM.sub.

Abstract: The invention relates to mixed crystals of 1,4-diketopyrrolo?3,4-c!pyrroles, consisting of 1 mol each of two different compounds of formulae ##STR1## as well as single-phase solid solutions of two different compounds of formulae I and II, wherein the diketopyrrolopyrrole having the smaller geometrical constitution is present in an amount of 53 to 70 mol %. A and B are as defined in claim 1. The novel mixed crystals as well as the novel solid solutions are admirably suited for pigmenting organic material of high molecular weight.

Abstract: A process for the preparation of mixed crystals of 1,4-diketopyrrolo?3,4-c!pyrroles, consisting of 1 mol each of two different compounds of formula ##STR1## by heating a corresponding mixture in solid form to the temperature range from 220.degree. to 380.degree. C.A and B are, for example, each a group of formula ##STR2## wherein R.sub.1 and R.sub.2 are each independently hydrogen, chloro, bromo, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.6 alkoxy, C.sub.1 -C.sub.6 alkylamino, phenyl or --CN, G is --O--, --NR.sub.7 --, --N.dbd.N-- or --SO.sub.2 --, R.sub.3 and R.sub.4 are hydrogen, and R.sub.7 is hydrogen, methyl or ethyl.The mixed crystals and solid solutions obtained are excellently suited for pigmenting high molecular weight material.

Abstract: Diketopyrrolopyrrole of the formula ##STR1## in its .beta.-modification. The new .beta.-modification is likewise suitable as a pigment for coloring high-molecular weight organic material and, in comparison to the a-modification, shows a shift in shade towards yellowish-red.

Abstract: Diketopyrrolopyrrole of the formula ##STR1## in its .beta.-modification and in its .gamma.-modification. Both the .beta.-modification and the .gamma.-modification are suitable as pigments for coloring high-molecular weight organic material. In comparison to the .alpha.-modification, the .beta.-modification shows a shift in shade towards yellowish-red. The .gamma.-modification gives brilliant orange colorations.