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5868828 |
Heterocyclic-substituted quinacridone pigments
This invention relates to quinacridone pigments of formula (I) ##STR1## wherein X is O, S, or NR; R is hydrogen, C 1 -C 6 alkyl, C 5 -C 7 cycloalkyl, or C 7 -C 16 aralkyl; Y is C 1 -C...
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5855662 |
Aqueous pigment preparations
Aqueous pigment preparations comprising a) 10 to 80% by weight, in particular 20 to 60% by weight, of a pigment, b) 0.1 to 20% by weight, in particular 0.1 to 15% by weight, of an...
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5843220 |
Process for the preparation of a pigment composition
The present invention relates to a process for preparing a pigment composition whereby a mixture of an organic pigment and an inorganic filler is subjected to an air jet milling step. The inventive...
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5837045 |
Colored pigment and aqueous compositions containing same
A surface-modified colored pigment is disclosed which includes a colored pigment having no primary amines and at least one attached hydrophilic organic group, wherein said organic group comprises...
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5800607 |
Process for the preparation of liquid pigment preparations
Process for the preparation of pigment preparations, which comprises wet milling the crude pigments which are present in coarsely crystalline state, or prepigments or pigments which are present in...
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5785750 |
1,4-diketo-3,6-diarylpyrolo 3,4-c! pyrrole
Pyrrolopyrrole derivatives of the formula (I) ##STR1## wherein QA is a quinacridone radical are disclosed. The inventive pyrrolopyrrole derivatives show excellent rheology enhancing properties for...
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5779783 |
Composition for printing inks
A composition used for an ingredient of printing ink, which comprises an organic pigment and a pigment derivative represented by the formula (I) in the acid form: ##STR1## wherein D represents a...
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5756746 |
Monophase solid solutions containing asymmetric pyrrolo 4,3-c! pyrroles as hosts
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 1 and G 2 ...
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5755873 |
Incorporation of quinacridone additives during quinacridone preparation
This invention relates to a process for the preparation of quinacridone pigments by (a) heating a reaction mixture comprising (i) a 2,5-dianilinoterephthalic acid, a...
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5755874 |
Process for preparing linear unsubstituted β-phase quinacridone pigments
Process for preparing linear unsubstituted β-phase quinacridone pigments A process for preparing linear unsubstituted β-phase quinacridone pigments or pigment preparations, which comprises a)...
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5746820 |
Surface-treated quinacridone and dioxazine pigments
The use of sulfuric monoesters of the formulae (I) and (II) R 1 --O--(CH 2 O) n --SO 3 - M + (I) R 1 --CO--NR 2 --(CH 2 O)( n +1)--SO 3 - M + (II) in which R 1 is a...
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5725651 |
Mono-N-alkyl-quinacridone pigments
Mono-N-alkyl-quinacridone pigments are disclosed. They exhibit high light fastness, high temperature stability and high migration fastness. Moreover, they show hypsochromic shifts, fluorescence and...
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5718753 |
Colored metallic pigment and preparation thereof
The instant invention relates to a process for the production of colored metallic pigments, as well as these colored metallic pigments themselves, their use to color high molecular weight organic...
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5716435 |
Recording fluid for ink-jet printing and process for the production thereof
A water-dispersed inkjet recording liquid excellent in water resistance and transparency and also excellent in the property of ejection from a nozzle, containing, as a colorant, a water-based...
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5713999 |
Incorporation of pigment derivatives in quinacridone processes
This invention relates to a process for the preparation of quinacridone pigments by (a) heating, at a temperature of about 80° C. to about 145° C., a reaction mixture containing (i)...
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5685901 |
Pigment composition of a modified diketopyrrolopyrrole and an aminoalkyl acrylate resin
The present invention relates to a pigment composition comprising a diketopyrrolopyrrole pigment of formula (I) ##STR1## wherein A and B are as defined in claim 1, on the particle surface of which...
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5683502 |
Incorporation of aromatic polycyclic compounds in quinacridone processes
This invention relates to a process for the preparation of quinacridone pigments by (a) heating, at a temperature of about 80° C. to about 145° C., a reaction mixture containing (i)...
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5679141 |
Magenta ink jet pigment set
The invention provides an ink jet pigment set comprising a magenta pigment, a yellow pigment, and a cyan pigment wherein the normalized spectral transmission density distribution curve of the...
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5679140 |
Magenta and yellow dye set for imaging systems
The invention provides a dye set comprising a magenta dye, a yellow dye, and a cyan dye wherein the normalized spectral transmission density distribution curve of the magenta dye has a density...
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5679139 |
Cyan and magenta pigment set
The invention provides a pigment set comprising a magenta pigment, a yellow pigment, and a cyan pigment wherein the normalized spectral transmission density distribution curve of the cyan pigment...
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5679148 |
Pigment compositions of a diketopyrrolopyrrole and an aminoalkyl acrylate resin
A pigment composition comprising A) a 1,4-diketopyrrolo 3,4-c!pyrrole pigment of formula ##STR1## wherein A and B are each independently of the other a group of formula ##STR2## wherein R 1 and...
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5679142 |
Cyan ink jet pigment set
The invention provides an ink jet pigment set comprising a magenta pigment, a yellow pigment, and a cyan pigment wherein the normalized spectral transmission density distribution curve of the cyan...
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5662739 |
Use of fatty acid taurides for the dispersion of polycyclic pigments
Readily dispersible polycyclic pigments from the class of the quinacridones and dioxazines are prepared by using a fatty acid tauride of the formula (I) R 1 --CO--NR 2 --(CH 2 ) n --SO 3 - M...
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5641351 |
Pigment compositions based on 3,6-di(biphenyl)1,4-diketo-pyrrolo[3,4c]-pyrrole
Heat-stable, red pigment compositions comprising a physical mixture of 1,4-diketo-3,6-di(4-biphenylyl)-pyrrolo [3,4 c]-pyrrole and a 2,9-dichloroquinacridone pigments, processes for preparing the...
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5641350 |
Organic pigments coated with metal phosphate complexes and amines
Pigment compositions comprising an organic pigment whose particle surface is provided with a protective coating layer, which coating comprises (a) a metal phosphate complex in which the metal is...
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5626662 |
Fine division in the preparation of organic pigments
Organic polycyclic crude pigments are finely divided in an ecologically and economically advantageous manner by first of all subjecting crude, coarsely crystalline pigments to dry milling and...
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5614014 |
Process for the preparation of Quinacridone pigments
Pigments, mixed-crystal pigments or pigment preparations based on linear, unsubstituted or substituted quinacridones are prepared advantageously by initially wet-milling the coarsely crystalline...
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5591258 |
Preparation of linear, unsubstituted quinacridone pigments of the β-phase
Linear, unsubstituted quinacridone pigments of the β-phase can be produced in an environmentally friendly manner by a) cyclizing 2,5-dianilinoterephthalic acid in polyphosphoric acid or a...
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5584922 |
Stir-in organic pigments
Disclosed is a process for coloring high-molecular-weight coatings and ink systems which comprises uniformly dispersing an effective pigmenting amount of a stir-in pigment in the coating or ink...
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5554217 |
Stir-in organic pigments
Disclosed is a process for coloring high-molecular-weight coatings and ink systems which comprises uniformly dispersing an effective pigmenting amount of a stir-in pigment in the coating or ink...
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5529623 |
Pigmentary solid solutions of pyrrolo[3,4-c]pyrroles and quinacridones
Binary and ternary pigmentary solid solutions are disclosed. The binary solid solutions are binary solid compounds consisting of 35-45 weight-percent unsubstituted DPP and 55-65 weight-percent...
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5522925 |
Organic pigments coated with Zr or Ti phosphate complexes
Pigment compositions comprising an organic pigment, the particle surface of which is provided with a protective coating, which coating consists of a metal phosphate complex in which the metal is...
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5518539 |
Process for the preparation of synergistic pigment mixtures
The present invention relates to a process for the preparation of synergistic pigment mixtures by mixing solutions of at least two pigments solubilized by introducing carbamate groups, and...
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5476544 |
Water-based pigment dispersion
A water-based pigment dispersion excellent in gloss of a coating, tinting strength, fluidity and storage stability, comprising a pigment, a pigment dispersing agent of the formula (1) and a solid...
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5472496 |
Solid solutions of pyrrolo-[3.4-c]-pyrroles with quinacridonequinones
The present invention relates to novel solid solutions which comprise a quinacridonequinone component, a pyrrolo[3,4-c]pyrrole component and a third component which is a 2-anilinoacridone, a...
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5453151 |
Resinated 2,9-dimethylquinacridone
This invention relates to a resinated 2,9-dimethylquinacridone pigment, which is prepared by a process comprising (a) preparing an aqueous suspension containing a 2,9-dimethylquinacridone pigment,...
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5387281 |
Compositions based on 2,9-Dichloroquinacridone pigments
The present invention relates to a heat stable red pigment composition comprising a 2,9-dichloroquinacridone and a bis-(4, 5,6,7-tetrachloroisoindolin-1-on-3-ylidene)-phenylene-1,4-di
amine pigment...
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5383966 |
Process for the preparation of dispersible quinacridones
The present invention relates to a process for conditioning quinacridone pigments by (a) preparing an aqueous slurry of a crude quinacridone; (b) thoroughly mixing the aqueous slurry with...
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5378274 |
Color filter, method for manufacture thereof and liquid crystal projector using said color filter
Disclosed herein are a color filter wherein an organic pigment is comprised of primary particles having an average particle size of 20 to 200 nm and a particle size distribution within ±35 nm and...
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5368641 |
Modified 2,9-dimethylquinacridone pigments, process for their manufacture and a method for pigmenting or lacquer systems with these pigments
A process for the preparation of 2,9-dimethylquinacridone pigments or mixed crystal pigments or mixtures of 2,9-dimethylquinacridone and quinacridones which in the two outer fused benzene rings can...
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5348580 |
Stabilization of organic pigments
Pigment compositions comprising a) at least one organic pigment selected from the group consisting of diketopyrrolopyrroles, azo pigments quinacridones, quinophthalones, phthalocyanines,...
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5346545 |
Stabilization
Pigment compositions comprising a) at least one organic pigment chosen from the group comprising azo pigments, quinacridones, phthalocyanines, indanthrones, flavanthrones, pyranthrones,...
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5336309 |
Flaky pigment
The invention provides a flaky pigment comprising particles of a flaky substrate and particles of a pigment or dye, whereby said flaky pigment is in the form of an ordered mixture. The invention...
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5318626 |
Process for converting 2,9-dimethylquinacridone compound into pigment
A process for converting a 2,9-dimethylquinacridone compound into a pigment, which comprises pouring a solution of a crude 2,9-dimethylquinacridone compound in sulfuric acid into continuously...
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5300148 |
Pigments, their production and use
Pigments (P) obtainable by cationizing desolubilization of (L) the colored leuco form of sulphur dyes and standardization of the desolubilized products and their use, in particular in printing inks.
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5281269 |
Aqueous process for preparation of modified beta quinacridone
Aqueous processes for the preparation of a new beta quinacridone modification possessing a magenta color having C.I.E. color space values in masstone of L=33-36, A=34-40 and B=8-15 starting with...
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5271759 |
Pigment compositions
Pigment compositions comprising a) at least one organic pigment, b) 0.05 to 10% by weight, based on the organic pigment a), of at least one modified organic pigment of formula ##STR1##...
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5269840 |
Sol bonded colorant clusters and process for making
Colorant clusters comprising an aggregation of a plurality of grains of sol-derived material and colorant. The clusters are particularly useful as pigments in liquid compositions, e.g., paints and...
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5264032 |
Pigment preparations
Pigment preparation essentially comprising a) at least one pigment from the class of azo, anthrapyrimidine, anthanthrone, quinacridone, perinone, diketopyrrolopyrrole, dioxazine, flavanthrone,...
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5236498 |
Quinacridone solid solutions having unique styling applications
This invention relates to quinacridone solid solutions containing (a) 95% to 5% by weight of 2,9-dimethoxyquinacridone, and (b) 5% to 95% by weight of 2,9-dichloroquinacridone, characterized by...
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