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JPH0643559B2 |
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JPH0643584B2 |
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JPH06148939A |
PURPOSE: To obtain a composition having excellent melting miscibility, stable in image density obtained by continuous copying by repeating development and excellent in light resistance. CONSTITUTION: A dye for a Magenta based color toner...
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JPH0635548B2 |
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JPH06502885A |
The present invention provides novel dyes for staining protein, particularly those in elecrophoretic gels. The dyes of the invention are derivatives of Coomassie TM dyes. The invention also provides quantitative and qualitative methods f...
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JPH0665170A |
PURPOSE: To prepare the subject compounds useful as intermediates for vat dyes by reacting (anthraquinonylamino)benzoic acid with halogen in the presence of sulfuric acid. CONSTITUTION: The objective compound of formula II (X1 is Cl or B...
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JPH0665510A |
PURPOSE: To obtain the desired compound with high purity in a high yield without causing environmental pollution which compound is useful as a dye, pigment, intermediate therefor, etc., by reacting a given anthraquinone compound with an ...
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JPH0659512A |
PURPOSE: To obtain a bright and transparent yellow color picture image without fog and to obtain a copy having good light resistance by using a dye of specified compsn. for a post-dyeing yellow color toner. CONSTITUTION: The dye for a pi...
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JPH0659509A |
PURPOSE: To obtain excellent melt blendability magenta color with stable picture image density, and good light-resistant rigidity by using a dye of specified compsn. for magenta dye-base color toner. CONSTITUTION: The dye for a magenta c...
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JPH0659513A |
PURPOSE: To obtain a bright and transparent yellow color picture without fog and to obtain a copy having good light resistance by using a dye of specified compsn. for a piece-dyeing yellow color toner. CONSTITUTION: The dye for a piece-d...
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JPH0659511A |
PURPOSE: To obtain a bright and transparent red color picture image without fog and to obtain a copy having good light resistance by using a dye of specified compsn. for a post-dyeing red color toner. CONSTITUTION: The dye for a piece-dy...
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JPH0624158A |
PURPOSE: To obtain blue dyes suitable for heat transfer by using a carrier containing a plurality of anthraquinone dyes of predetermined general formula in a transfer method by the use of laser. CONSTITUTION: A transfer is effected by ma...
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JPH05509095A |
PCT No. PCT/GB91/01170 Sec. 371 Date Mar. 17, 1993 Sec. 102(e) Date Mar. 17, 1993 PCT Filed Jul. 15, 1991 PCT Pub. No. WO92/01664 PCT Pub. Date Feb. 6, 1992.The invention relates to the synthesis of 6-deoxykermesates, 6-deoxykermesic aci...
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JPH05331378A |
PURPOSE: To obtain a pigment compsn. which can provide various kinds of spectral properties and is useful for producing a color filter enabling a highquality liq. crystal display. CONSTITUTION: A pigment compsn. contains an org. polymer ...
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JPH0583895B2 |
PURPOSE:To record information in high density at high speed by forming a cyclodextrine derivative having both of hydrophilic and hydrophobic structures in a state of clathrating a photoisomer into an ultrathin film and laminating said fi...
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JPH0582422B2 |
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JPH05271558A |
PURPOSE: To improve the yield of anthraquinone dyestuff by employing a compound for the synthesis of the dyestuff. CONSTITUTION: A method for producing 1-amino-4-bromo-anthraquinone-2-sulfonic acid sodium salt for synthesizing anthraquin...
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JPH0564764B2 |
A near infrared ray absorption filter, particularly usable as a sharp cut filter for an infrared ray sensor, which comprises as an absorbent capable of controlling transmission of a ray at least one anthraquinone compound represented by ...
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JPH0558621B2 |
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JPH0556387B2 |
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JPH0553639B2 |
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JPH05194864A |
PURPOSE: To produce 4,4'-diamino-1,1'-dianthraquinonyl-3,3'-disulfonic acid or its salt in an industrially advantageous manner by heating 1-amino-4- halogenoanthraquinonesulfonic acid and a nearly stoichiometric amount of copper. CONSTIT...
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JPH05194329A |
PURPOSE: To obtain 1-nitroanthrquinon-2-carboxylic acid in high yield and with high purity without causing heavy metal contamination by the waste water by a technically easy and economical method. CONSTITUTION: 1-Nitro-2-methylanthraquin...
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JPH05173369A |
PURPOSE: To provide a color toner having excellent melt miscibility with which picture images of continuous copies obtd. by repeated development have stable density, bright red color, and good light resistance, by using a specified dye f...
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JPH05170713A |
PURPOSE: To synthesize an anthraquinone compound having excellent quality in high yield while suppressing the formation of by-product to an extremely low level compared with conventional process by carrying out the reaction in 1,3-dimeth...
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JPH05163441A |
PURPOSE: To provide an industrially advantageous conditioning method for imparting excellent pigment characteristics to a 4,4'-diamino-1,1'-dianthraquinonyl compound obtained by desulfonating a 4,4'-diamino-1,1'-dianthraquinonyl-3,3'- di...
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JPH05117215A |
PURPOSE: To provide a commercially practicable and profitable process for selectively preparing 1-aminoanthraquinone and its substd. deriv. CONSTITUTION: 2-Chlorobenzyl chloride is allowed to react with xylene in the presence of a solid ...
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JPH05112512A |
PURPOSE: To obtain purified 1-amino-2-phenoxy-4-hydroxyanthraquinone with a high yield by adjusting pH within a specified range after completion of the reaction for obtaining the compd., separating the product from the liq. phase and was...
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JPH0597784A |
PURPOSE: To efficiently synthesize 1-aminoanthraquinone useful for a dye or the like by allowing a substituted benzoic acid derivative to react with xylene under a specific condition. CONSTITUTION: 2-Substituted dimethyl benzophenones ar...
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JPH0593149A |
PURPOSE: To prevent a high-concentration pigment dispersion from suffering a viscosity increase or a decrease in gloss, tinting power, etc., by incorporating a specific compound into a monoazo lake pigment comprising β- hydroxynaphthoic...
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JPH0593142A |
PURPOSE: To obtain a near infrared ray-absorbing dye usable as a light-absorber in an optical recording medium and capable of forming a recording medium of a high sensitivity by vatting a vat dye in the absence of a dyeable substrate and...
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JPH0518950B2 |
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JPH0517219B2 |
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JPH0515197B2 |
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JPH0539432A |
PURPOSE: To improve filtering characteristics in production of a 4,4'-diamino-1,1'- dianthraquinonyl pigment. CONSTITUTION: 4,4'-Diamino-1,1'-dianthraquinonyl-3,3'-disulfonic ac id is desulfonated with sulfuric acid under heating to give...
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JPH0539435A |
PURPOSE: To improve filtering characteristics in production of 4,4'-diamino-1,1'- dianthraquinonyl pigment. CONSTITUTION: In obtaining an aqueous suspension by desulfonating 4,4'- diamino-1,1'-dianthraquinonyl-3,3'-disulfonic acid with s...
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JPH0511107B2 |
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JPH059469B2 |
A pigment composition consisting of 100 parts by weight of a pigment, and from 0.1 to 30 parts by weight of a pigment dispersant of formula in which Q is (a) an anthraquinone dye or pigment radical, (b) an azo dye or pigment radical, (c)...
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JPH059419B2 |
The invention relates to an improvement of the process for the preparation of 1,4-diaminoanthraquinones by oxidation of the corresponding 2,3-dihydro-1,4-diaminoanthraquinones with nitrobenzene, which improvement is brought about by carr...
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JPH0525116A |
PURPOSE: To purify crude 4,4'-diamino-1,1'-dianthraquinonyl-3,3'--disulfonic acid or a salt thereof into such a purity as to be used as a raw material for producing 4,4'-diamino-1,1'-dianthraquinonyl-based red pigment having excellent pi...
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JPH059398A |
PURPOSE: To obtain the title microcapsules for dyeing synthetic resins such as polyesters or nylons by depositing ultrafine particles of a disperse dye in an aqueous solution of encapsulating agent to effect coating of the ultrafine part...
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JPH05232B2 |
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JPH05234B2 |
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JPH05233B2 |
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JPH0481628B2 |
The invention relates to a process for the preparation of anthraquinone imides by condensing vattable anthraquinone compounds which contain at least one primary amino group with aromatic halogen compounds, in an organic solvent and at el...
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JPH0480011B2 |
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JPH0472875B2 |
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JPH04330461A |
PURPOSE: To provide a toner for color electrostatic photography which is able to easily erase a toner image transferred on a paper. CONSTITUTION: The image on the paper developed with the toner for color electrostatic photography made of...
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JPH0471108B2 |
This invention relates to dyes which are resistant to hypochlorite attack, exemplary of which are anthraquinone dyes of the general formula: wherein X1, X2, X3, X4, R5, R6, R7, and R8 are defined within the specification. The invention a...
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JPH04506345A |
PCT No. PCT/EP90/01030 Sec. 371 Date Oct. 22, 1991 Sec. 102(e) Date Oct. 22, 1991 PCT Filed Jun. 27, 1990 PCT Pub. No. WO91/00317 PCT Pub. Date Jan. 10, 1991.Anthraquinone dyes I I (Ar = aryl, A = anthraquinonyl) are prepared by reacting...
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