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JP3026645B2 |
PURPOSE: To obtain a new bisazo compound useful as a charge-generating pigment in electrophotographic photoreceptor practical as a high speed copying machine, etc., and having high sensitivity, especially laminate type photoreceptor. CON...
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JP3026622B2 |
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JP2000053878A |
To obtain a paper-coloring dye which imparts a darkish yellow color by forming a disazostilbene dye of which each terminal benzene ring is substd. at the positions ortho and meta to an azo group. This dye is a yellow disazo dye represent...
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JP2000047406A |
To provide an electrophotographic photoreceptor having high sensitivity, excellent in potential stability in a repeated use and excellent in the dispersibility of a manufacturing coating liquid by manufacturing a photoconductor having a ...
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JP2000047407A |
To provide an electrophotographic photoreceptor having high sensitivity, excellent in potential stability in a repeated use and excellent in the dispersibility of a coating liquid during manufacture by manufacturing the photoreceptor hav...
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JP2000026746A |
To obtain a new dyestuff consisting of a specific cationic azo dyestuff, useful for dyeing and printing of polymeric materials, and having characteristics such as an excellent light fastness, a high color depth and an affinity to fibers....
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JP2000017266A |
To obtain a dichroic colorant compsn. which is useful for preparing a guest-host type liq. crystal compsn. exhibiting a high-order parameter and has a sufficient solubility in a liq. crystal by mixing two specific dichroic azo colorants....
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JP2992376B2 |
The invention concerns water-soluble trisazo dyes of the formula I and processes for the preparation thereof and also the use thereof.
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JP2986605B2 |
The present invention provides a trisazo dye represented by the formula (I) wherein A is a phenyl group substituted with at least one substituent selected from an amino group, a substituted amino group and a hydroxyl group, B is a substi...
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JP2983742B2 |
PURPOSE: To obtain the subject dye having excellent dyeing property, fastness and color hue and useful for water-base ink, etc., by coupling a tetrazotized product of 4,4'-diaminotriphenylamine with 1-amino-8-naphthol-3,6-disulfonic acid...
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JP2981300B2 |
The industrial preparation of C.I. Pigment Yellow 81 by conventional coupling methods has the disadvantage that traces of polychlorinated biphenyls are formed in the course of the reaction of the two components. The invention now provide...
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JP2979024B2 |
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JP2960135B2 |
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JP2941928B2 |
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JP2943996B2 |
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JP2941932B2 |
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JP2938149B2 |
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JP2931542B2 |
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JP2903339B2 |
An electrophotographic photoreceptor is provided with a photosensitive layer, which contains an azo compound represented by the following g general formula (1): (1) wherein A means a coupler residuum having phenolic OH radicals, R1 and R...
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JP2897133B2 |
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JPH11505526A |
Amyloid binding compounds which are derivatives of Chrysamine G, pharmaceutical compositions containing, and methods using such compounds to identify Alzheimer's brain in vivo and to diagnose other pathological conditions characterized b...
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JPH11116833A |
To obtain a new compound which is a direct disazo dye improved in fastness to light and brightness and can be used for dye and printing of a substrate containing hydroxyl and/or amino group. This compound corresponds to a compound of for...
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JP2883933B2 |
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JP2881192B2 |
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JPH1121273A |
To obtain the subject new compound giving negative results of Ames test and excellent in coloring power, hue, clearness, light resistance, thermal resistance, solvent resistance, top coat fastness, etc. This compound is that one expresse...
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JP2847195B2 |
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JPH115936A |
To obtain an ink jet recording ink that is excellent in jettability and printing quality and also excellent in jettability and jetting stability after a long pause of jetting by incorporating specified amts. of high-boiling water-soluble...
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JPH115917A |
To obtain yellow to orange pigments excellent in light resistance, heat resistance, etc., by using as the constituent a disazo compound having acetoanilide derivative, pyrazolone derivative or barbituric acid derivative residues. The com...
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JP2819512B2 |
PURPOSE:To form the black matrix of the color filters having high accuracy and excellent light shieldability by using a black dyestuff consisting of an azo dyestuff having a specific compsn. CONSTITUTION:The azo dyestuff having the resid...
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JPH10279824A |
To obtain a water-soluble disazo compd. which has a high water solubility and gives a high-density print image by subjecting a sulfonated amino compd. to diazotizing and coupling, subjecting the resultant monoazo compd. to diazotizing an...
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JP2811108B2 |
There is disclosed the electrophotographic photoreceptor having a high sensitivity and a low residual potential as well as an excellent durability in repeated use. The photoreceptor comprises a photoreceptive layer containing the bisazo ...
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JPH10259312A |
To obtain a novel stilbeneazo dye suitable for use in dyeing or printing cellulosic materials such as cotton or paper and amido-containing materials such as leather and advantageous in the production of inks suitable or use in especially...
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JP2803169B2 |
A photoconductor for electrophotography comprises an electroconductive substrate and a photosensitive layer formed on the substrate. The photosensitive layer includes a novel bisazo compound as a charge generating substance therein. The ...
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JPH10251536A |
To obtain the subject dye mixture capable of dyeing N-containing or hydroxy-containing fibrous materials through dip dyeing or printing by mixing at least two kinds of azo dyes. This dye mixture comprises at least one kind of dye of form...
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JP2795473B2 |
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JPH10237336A |
To obtain a new disazo compound, capable of assuming a yellow to an orange color, excellent in light, heat and solvent resistances and various fastness and useful for coloring a printing ink, a coating material, a polymeric organic mater...
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JP2788128B2 |
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JP2789212B2 |
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JP2788127B2 |
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JPH10219126A |
To provide a novel bisazo compd. which has a specified molecular structure, is excellent in sensitivity and durability, and is useful as an org. photoconductive compd. for an electrophotographic photoreceptor. This compd. is represented ...
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JP2782108B2 |
An electrophotographic photosensitive member having a conductive substrate and a photosensitive layer thereon. The photosensitive layer contains a compound represented by the following formula (1): (1) wherein Ar1 and Ar2 are the same or...
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JPH10195321A |
To obtain a black recording fluid high in the state of being dissolved, stable even after long-term storage, high in the density of a printed image and excellent in water resistance and light fastness by using a phenylazo- containing pol...
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JPH10182607A |
To obtain a new compound comprising a specific amino compound, excellent in light resistance, thermal resistance, solvent resistance, etc., and advantageously used for production of a new dye and pigment. This new compound is a compound ...
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JP2770912B2 |
Compounds of the formula +TR and salts thereof, wherein R1 is hydrogen or methyl, R2 is hydrogen, methyl or acetamido, R3 is hydrogen, methyl or methoxy, R4 is hydrogen, C1-4alkyl or hydroxy(C2-4alkyl), R5 is hydroxy(C2-4alkyl) or hydrox...
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JP2770539B2 |
A photoconductor for electrophotography includes an electroconductive substrate; and a photosensitive layer formed on the substrate. The photosensitive layer includes a charge generating substance consisting essentially of at least one p...
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JPH10168334A |
To obtain a new polyazo dyestuff having black color and blue to navy blue color, excellent in light fastness and moisture fastness, and useful for dyeing cotton, wool, leather, polyamide fibers, etc. A compound of formula I [one of X1, X...
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JPH10152622A |
To obtain a disazo compound as a new compound which can give a disazo pigment useful as e.g. a yellow to purple organic pigment excellent in various types of fastness such as especially fastness to light, heat resistance, solvent resista...
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JPH10147725A |
To obtain a disazo compound which is nontoxic, shows a nonreddish yellow to bluish yellow hue and is negative to the Ames test by coupling a specified diamine tetrazonium salt with a coupler comprising acetoacetamide. A diamine tetrazoni...
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JP2759697B2 |
(1) Dicyanoimidazole compound derivative represented by the formula [I] [R1, R2: alkyl group, alkoxyalkyl group, hydroxyakyl group, beta -cyanoethyl group, beta -chloroethyl group, aralkyl group, aryl group; X: hydrogen atom, lower alkox...
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JPH10140030A |
To obtain the subject concentrate having high light resistance, water resistance and friction peel resistance and, accordingly, advantageously usable for the production of an ink for ink-jet recording by adding a specific dye at a specif...
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