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JPS60228566A |
NEW MATERIAL:Anthraquinone compounds of the formula, wherein X is H, halogen, alkyl, alkoxyl, amino, nitro, -CH=CH-CH=CH-; Y is H, halogen, alkyl, alkoxyl. EXAMPLE: 2-Bromo-11,12-dithia-6( H ),17( H )-6,7-diaza-dinaphtho[2,3a],[2,3c]-5,8...
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JPS60228565A |
NEW MATERIAL:An anthraquinone compound of the formula (where X is H, a halogen, an alkyl, an alkoxyl, amino, nitro or -CH=CH-CH=CH-; Y is H, a halogen, an alkyl or an alkoxyl). EXAMPLE: 6-Hydroxy-8-thia-13-aza-naphtho[2,3a]-5,14-anthraqu...
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JPS6048545B2 |
Vat dyestuffs of the formula N ANGLE A1-N-CC-N-A2 ¦¦ PARALLEL ¦ (1), R1NNR2 ANGLE C ¦ S-R wherein R represents alkyl with 1 to 4 carbon atoms, R1 and R2 represent hydrogen or alkyl with 1 to 4 carbon atoms and each of A1 and A2 repre...
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JPS6039075B2 |
Novel 5,6,11,12-tetraselenotetracene-o-chloroanil complexes are disclosed which exhibit improved electrical conductivity, and low resistivity at room temperature. Said complexes are useful, e.g., as organic electrical conductors, solid s...
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JPS60124655A |
PURPOSE: To reproduce voices and at the same time to display characters and patterns, by displaying characters and patterns on a liquid crystal display device in reproducing a tape of a playback unit etc. CONSTITUTION: A playback unit 4 ...
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JPS60108468A |
There are described silane diimidic tetracarboxylic perylene dyes, composite pigments obtainable therefrom by grafting onto an inorganic substrate or support, and processes for preparing the same. The dyes have the general formula: i...
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JPS606974B2 |
The present invention relates to new vat dyestuffs of the general formula WHEREIN A represents vattable polycyclic quinone, X represents oxygen or sulphur, B represents a 6-membered heterocycle with 2 to 3 nitrogen atoms which optionally...
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JPS6031560A |
PURPOSE: To obtain the titled dye which has a yellow color, a high molecular extinction coefficient and a tint with good reproducibility and does not undergo thermal decomposition under thermal recording head operating conditions, by usi...
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JPS6026085A |
PURPOSE: To provide a dichromatic coloring matter consisting of a specified compd. having a perylene structure in the center and biphenyl group introduced at the terminal and having a high dichromatic ratio, a high molecular extinction c...
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JPS6023477A |
PURPOSE: To provide a dichroic dye consisting of a dye having perylene skeleton at the center of the compound and carboxyl group at its terminal, having relatively high solubility, long life and high dichroic ratio, an suitable for a col...
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JPS59215380A |
PURPOSE: To provide a color display device which has reduced emission of red light and produces images in pure black color, by adding a specified dye having peak wavelength absorption within a red light wavelength region, to a dichroic m...
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JPS59207981A |
PURPOSE: To obtain titled display capable of genunine black color display with reduced red color display component, by the use of a balck liquid crystal material having a dichromatic dye-mixed composition containing dyes of specified che...
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JPS5943064B2 |
A process for the preparation of transparent pigmentary forms, of high tinctorial strength, of perylene-3,4,9,10-tetracarboxylic acid bis-p-phenetidide and bis-p-chloroanilide, in which the diimide concerned is converted to the leuco com...
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JPS59159854A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS5932498B2 |
There is described a process for producing vat dyes by carbazolation of anthrimides effected by reaction of a complex of titanium tetrahalide (chloride or bromide) with a sulfone in a medium of the sulfone as the solvent. Further subject...
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JPS59136375A |
Certain substituted anthraquinone compounds have been found to be useful as isotropic dyestuffs in guest-host combinations with nematic, cholesteric and smectic liquid crystals and other well-known dichroic dyestuffs. By "isotropic" it i...
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JPS59113444A |
The invention describes an electrophotographic recording material made of an electrically conductive support and at least one binder-containing photoconductive layer which contains (1) a perylenetetracarboxylic acid derivative as a compo...
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JPS5974173A |
PURPOSE: To provide a red water-base ink having good resistance to light and water, by incorporating a particular dye. CONSTITUTION: A water-base ink which contains a dye of formula I (wherein R1 is H, 1W8C alkyl; R2, R3, R4 are H, methy...
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JPS5974161A |
NEW MATERIAL:The titled compds. of formula I (wherein A is O, S, NH; either of X and Y is amino and the other is H, halogen; R is alkyl, aryl, aralkyl, cyclohexyl, wherein alkyl chains and aryl rings in the substitutent may be further su...
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JPS5947261A |
PURPOSE: To improve easily dichroism, by introducing a specified group such as a phenyl or cyclohexyl group into position 4 of a phenyl or naphthyl group situated at the terminal of the major molecular axis of an azo dye for liquid cryst...
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JPS593594B2 |
A hydrophobic fiber material is dyed in a dye bath containing at least nine disperse dyes having different chemical structures from one another within a short period of time with a good levelness.
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JPS592291B2 |
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JPS5855985B2 |
Process for the manufacture of halogen-containing anthraquinoidal compounds being useful for bulk dyeing high molecular organic compounds and having the formula WHEREIN A is an anthraquinoidal radical being free from nitro groups, X is -...
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JPS58194971A |
PURPOSE: To make pure black color display possible, by using a liquid crystal blended with a composition prepared by adding specified anthraquinone dye compds. to a conventional dichroic dye mixture compsn. for black color display. CONST...
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JPS5847425B2 |
N,N'-dimethyl-perylene-3,4,9,10-tetracarboxylic acid diimide is obtained as a valuable pigment of a pure red shade, by reacting perylene-3,4,9,10-tetracarboxylic acid anhydride at low temperatures with a dilute aqueous solution of at lea...
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JPS5845984B2 |
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JPS58173165A |
1. Process for preparing triazinyl vat dyestuff mixtures which contain dyestuffs of the formulae see diagramm : EP0090244,P6,F1 and see diagramm : EP0090244,P6,F2 wherein A and B designate vattable radicals and R1 , R2 and R3 designate h...
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JPS58141245A |
PURPOSE: To provide an anthraquinone polychroic colorant having an S value of 0.7 or above and a liquid crystal display element in which a liquid crystal layer of a quest-host type liquid crystal compsn. contg. said colorant and having e...
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JPS5837339B2 |
Useful vat dyestuffs can be prepared by reacting a mixture of aminoanthraquinones containing 65-80% 1-aminoanthraquinone and 20-35% of a mixture containing 2-aminoanthraquinone and 1,5- and 1,8-diaminoanthraquinones with, for example, a ...
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JPS5833895B2 |
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JPS58122963A |
Nitrotrianthrimidecarbazoles of the formula (I) in which the NO2 group is in the alpha - or beta -position and R1, r2; R3 and R4 designate hydrogen or halogen such as chlorine and bromine, their use as vat dyestuffs, a process for their ...
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JPS5832181B2 |
High tinctorial strength, easily dispersible perylene-3,4,9,10-tetracarboximides and N,N'-dialkylperylene-3,4,9,10-tetracarboximides are produced by introducing a finely ground crude pigment whose primary particle size is not more than 0...
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JPS58104951A |
1. Process for preparing an anthraquinone vat dyestuff by reacting 1-aminoanthraquinone in a medium containing sulphuric acid with agents having an oxidising action to give aminopolyanthrimides and carbazolating the aminopolyanthrimides ...
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JPS5821657B2 |
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JPS5871821A |
1. A method of utilizing the wavelength range from 470 to 600 nm for plant growth and photosynthesis, with the aid of a fluorescent compound, wherein a non-ionic compound of the violanthrone or isoviolanthrone series, a boron complex of ...
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JPS5813590B2 |
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JPS5813589B2 |
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JPS5840359A |
A process for concentrating light over a particular area by means of fluorescent compounds in plastic plates or films, wherein the fluorescent compounds used are those of the formula or where Z is =N- or =CH-, Y is -OSO2R1, -OCOR1 or -OR...
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JPS585208B2 |
1-AZA-2-HYDROXYBENZANTHRONE, USEFUL AS AN INTERMEDIATE FOR SYNTHESIZING DYES IS OBTAINED BY THE DIRECT REACTION OF ALKYL ESTERS OF ANTHRAQUINONE-1-ACETIC ACID WITH AMMONIA IN HYDROXYLATED SOLVENTS AND IN THE PRESENCE OF STRONG BASES AND/...
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JPS585209B2 |
A new process for preparing 3,3 - thio - bis[2-Methoxy-1-azabenzanthrone], a useful intermediate in the synthesis of dyestuffs, is disclosed. The process involves reacting 2-methoxy-1-azabenzanthrone with sulfur chlorides in suspension o...
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JPS584022B2 |
1493053 o - (3 - Hydroxy - 1 - isoquinolyl)- benzoic acid AZIENDE COLORI NAZIONALI AFFINI ACNA SpA 17 Jan 1975 [21 Jan 1974 16 July 1974] 2176/75 Heading C2C The invention comprises a compound having the tautomeric formula and the prepar...
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JPS587674A |
A photoelectrophoretic imaging process, wherein a suspension of photosensitive pigment particles between two electrodes, at least one of which is transparent, is subjected to the influence of an electric field and exposed to an image, wh...
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JPS57205448A |
PURPOSE: To provide a novel anthraquinone dye which possesses properties required as a dichronic dye and develops alone clear green to yellowish green, and to provide a liquid crystal compsn. which serves as a highly practicable green di...
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JPS5755822B2 |
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JPS57185414A |
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JPS57167352A |
NEW MATERIAL:3,4,9,10-Perylenetetracarboxylic acid diimide derivative of the formula wherein 1, 2 are eah alkyl, cycloalkyl, aralkyl, aryl, heterocyclic group. USE: Dichroic coloring matter for liquid crystals, which develops a bright ro...
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JPS57162757A |
An improvement in the process for the preparation of dispersed dyes of compounds of the formula (I) where X is >O or >NH and R is C1-C12-alkyl, C2-C6-hydroxyalkyl, alkoxyalkyl of 3 to 12 carbon atoms in total, C5-C8-cycloalkyl, phenoxy-C...
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JPS57147557A |
Vat dyestuffs containing at least 80% by weight of one or more of the compounds of the formula wherein A and B independently of one another represent -NHV, -NHW or -NHZ, in which V represents a radical of the formula W represents a radic...
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JPS57147555A |
1. Process for the preparation of vat dyestuffs from the waste products of the monosulphonation or, preferably, the mononitration of anthraquinone by conversion into corresponding aminoanthraquinone mixtures and reaction of the same, if ...
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JPS57147553A |
1. Process for the preparation of anthraquinone vat dyestuffs, characterised in that optionally substituted aminoanthraquinones or amino group-containing compounds derived therefrom are reacted with acylating agents, which contain one or...
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