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7485737 |
Colorant compounds
A compound of the formula
wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R′, R″, Y, CA + , and A − each, independently of the others are as defined herein.
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7481847 |
Dye composition comprising at least one cationic hydrazone direct dye, dyeing process, and multi-compartment devices
The present disclosure relates to a composition for dyeing human keratin fibers, comprising at least one cationic direct dye of formula (I), described herein, and at least one cosmetic agent chosen...
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7453004 |
Process for preparing aloe-emodin
A process for preparing aloe-emodin from aloin by oxidizing aloin by treatment with an oxygen-containing gas in the presence of an acid. The aloe-emodin may be used for the production of rhein and...
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7214713 |
Antraquinone compositions as anticancer compositions and nutrition supplements and methods of making and using them
A food supplement having prophylactic and-cancer effects, wherein the supplement comprises 20 to 99.99% by weight of a product of biosynthesis by the productive microorganism Penicillium oxalicum...
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7132403 |
Antihelminthic anthraquinones and method of use thereof
Anthraquinones are described which are antihelminthic and in particular, are useful in compositions for inhibiting Schistosoma sp. in vitro or in vivo. The preferred anthraquinones have the...
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7056346 |
Direct dye composition for the hair, comprising a crosslinked polymer containing acrylic units and C10-C30 alkyl acrylate units
The present invention relates to a composition comprising, in a cosmetically acceptable support suitable for dyeing the hair, at least one direct dye and at least one crosslinked polymer containing...
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6914114 |
Absorbing compounds for spin-on-glass anti-reflective coatings for photolithography
An absorbing ether-like compound including a siliconethoxy, silicondiethoxy, or silicontriethoxy species attached to a naphthalene or anthracene chromophore via an oxygen linkage is used as an...
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6903076 |
Antihelminthic anthraquinones and method of use thereof
Anthraquinones are described which are antihelminthic and in particular, are useful in compositions for inhibiting Schistosoma sp. in vitro or in vivo. The preferred anthraquinones have the...
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6875746 |
Anticancer anthraquinones and method of use thereof
Anthraquinones are described which have anticancer or antitumor activity and which are useful for inhibiting cancer cells and cells comprising tumors in vitro or in vivo. Preferably, the...
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6861541 |
Method for preparation of an anthraquinone colorant composition
Disclosed herein is a method for producing a 1-[4-(biphenyl-4-carbonyl)]phenylaminonthraquinone colorant composition where the method comprises: reacting 4-halobenzoic acid with about 1 mole to...
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6835211 |
Direct hair dyes and use thereof
The invention relates to coloring and toning agents for keratinous fibers, in particular human hair, comprising at least one hydroxyanthraquinone derivative of formula (I), as a direct dye, in a...
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6673257 |
Thermal cutoff construction compositions
A thermal cutoff member and compositions used to manufacture such members are described herein as including at least two organic compounds which, when sufficiently combined, give rise to a...
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6669994 |
Water-soluble coating agents bearing initiator groups
A method of forming a polymer layer on a support surface by the use of a coating agent and polymerizable compounds. The coating agent provides photoreactive groups adapted to attach the agent to...
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6635350 |
Polymeric 1,5- or 1,8-disubstituted anthraquinone-derivative colorants and articles comprising such colorants
Red colorants comprising a chromophore having at least one poly(oxyalkylene) chain attached to the 1-position, as well as at least one poly(oxyalkylene) chain attached to either the 5-position or...
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6620858 |
Colorants containing copolymerizable vinyl groups and sulfonamide linkages
Disclosed are thermally-stable, colored, photopolymerizable compounds containing a vinyl group which are capable of being copolymerized with reactive vinyl monomers to produce colored compositions...
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6596036 |
Method for the production of a dye preparation based on madder root
The present invention relates to a method for the production of a dye preparation from madder root, comprising extraction of madder root in water at a temperature below 70-75° C., preferably below...
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6579994 |
Process for preparation of 2-Methyl-1,4-naphthoquinone
The present invention describes a process for the preparation of 2-Methyl-1,4-naphthoquinone by oxidizing 2-methylnaphthalene with hydrogen peroxide in the presence of acetic acid.
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6491847 |
Discotic liquid crystal and organic electroluminescence device using same
A novel class of discotic liquid crystals represented by the following formula was synthesized, and a layer thereof was incorporated in an organic electroluminescence device.
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6464954 |
Method for hydrogenating an anthraquinone compound
A process for hydrogenating an anthraquinone compound or a mixture of two or more thereof utilizes specific catalysts comprising, as active metal, a metal of transition group VIII of the Periodic...
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6399795 |
Method for producing 2-(4-methyl-3-pentenyl) anthraquinone
A method for producing 2-(4-methyl-3-pentenyl)anthraquinone (IHEAQ) that includes a Diels-Alder addition of naphtho-1,4-quinone and myrcene and an oxidation of the resulting adduct. The oxidation...
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6372785 |
Synthesis of 1,8-dichloro-anthracene analogues and pharmaceutical compositions based thereon
The invention provides novel anthracene compounds useful in the treatment of allergic, inflammatory, and tumor conditions and therapeutic compositions containing such compounds or their...
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6359113 |
Protective group, compound protected by said group and device for grafting the protective group on the compound to protect it
The protective group having the following formula (I): Ar—L— (I) wherein Ar represents a substantially planar, fused ring system containing at least 4 aromatic rings, and L represents a group...
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6245922 |
Chromophoric photocrosslinking compound
A photoactive compound that is the reaction product of an alkenyl azlactone compound and a nucleophilic aromatic ketone is described. Mer units derived from this compound can be used, for example,...
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6103917 |
Method for regenerating anthraquinone derivatives during a synthesis process of hydrogen peroxide 30 %
The invention concerns a method for regenerating a working solution for producing hydrogen peroxide 30%, in which the working solution is contacted with alumina at a temperature of approximately...
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6051360 |
Dyestuffs and resin compositions
Dyestuffs represented by the below-described formula (1), that is, dyestuffs formed of a chromophoric nucleus and a bisphenol introduced therein have excellent solubility in solvents and binder...
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5994567 |
Direct oxygen injection into bubble column reactors
The invention is directed to a liquid phase oxidation process, wherein a first oxygen-containing gas is injected into the lower portion of a bubble column reactor vessel containing an oxidizeable...
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5989876 |
Colorant precursors derivable from cells of plants of the genus medicago, process for their preparation and use thereof for the preparation of colorants
Colorant precursors, which are present in the cells of plants belonging to the genus Medicago, such as alfalfa, can react with quinones so as to yield colorants which can be used in dyeing...
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5919846 |
Colorant having isocyanate substituent
A novel colorant compound is provided which is the addition product of an organic chromophore having at least one reactive hydroxyl or amine substituent, a polyisocyanate, and a carboxylic acid,...
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5869605 |
Protected compound comprising a protective group removably attached to a compound to be protected
The protective group having the following formula (I): Ar--L-- (I) wherein Ar represents a substantially planar, fused ring system containing at...
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H001787 |
Regeneration method of working solution
A regeneration method of a working solution is herein disclosed in which various by-products which do not participate in the production of hydrogen peroxide and which are present in the working...
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5856358 |
Mono- and disulfo-substituted anthraquinones and their use for the treatment of bone matrix disorders
Compounds of formula (I) for treatment of pathologies in which erosion of cartilaginous and bone matrix occurs, for example osteoarthrosis. An exampliary compound is...
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5804563 |
Synthetic receptors, libraries and uses thereof
The invention is directed to synthetic receptor(s) which comprises a polyfunctional organic template covalently linked to two or more oligomers which may independently be the same or different and...
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5750743 |
Method for preparing a solution of an alkali salt of anthrahydroquinone
A method for preparing a solution of an alkali salt of anthrahydroquinone, which comprises reacting a solution of an alkali salt of 1,4-dihydro-9,10-dihydroxyanthracene with anthraquinone in the...
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5728898 |
Process for making water-soluble derivatives of quinones
Process for making water-soluble hydroquinone salts by reacting an aqueous liquid solution of (a) a formamidinesulfinic acid and (b) an alkali metal or quaternary ammonium hydroxide in which is...
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5648258 |
Anthraquinone inhibition of methane production in a ruminant animal
Anthraquinone compounds inhibit methane production by methanogenic bacteria in the rumen of ruminant animals, increasing production of volatile fatty acids and feed utilization efficiency....
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5587495 |
4-substituted anthracyclinones and anthracycline glycosides and the process for preparing them
4-substituted anthracyclinones of formula (I): ##STR1## wherein R represents a straight or branched alkyl, alkenyl or alkynyl group of up to 16 carbon atoms optionally substituted by (a) an aryl...
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5449778 |
Cyclic amino acids and derivatives thereof
Novel cyclic amino acids which are useful in preparing biologically active peptides as well as a process for the preparation of D and L enantiomers of the cyclic amino acids are described where an...
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5424421 |
Synthesis of carminic acid and principal intermediates
The invention relates to the synthesis of 6-deoxykermesates, 6-deoxykermesic acid, and carminic acid, based on a reaction of a 2-halogenonapthazarin with a bis-trimethylsilyl-diene.
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5329026 |
Process for preparation of 2-substituted 1,4-naphthoquinone
A process for preparation of a 2-substituted-1,4-naphthoquinone which comprises oxidizing a 2-substituted naphthalene to obtain reaction products comprising a 2-substituted-1,4-naphthoquinone and a...
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5294701 |
Anthracycline compounds and intermediates
This invention provides novel anti-tumour compounds of the formula ##STR1## wherein R 1 and R 2 are hydrogen or together form an alkyl-, alkoxy- or OH-substituted aromatic group, which optionally...
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5223390 |
Analytical elements containing non-reactive blocking dyes
An analytical element for quantitatively assaying an analyte by measuring reflection density in the range 320 to 360 nm. The element comprises a reagent layer and a registration layer. One of such...
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5196179 |
Process for the production of hydrogen peroxide
The invention relates to a process for converting anthrahydroquinone dissolved in an organic solvent to hydrogen peroxide and anthraquinone by causing a mixture of oxygen and anthrahydroquinone to...
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5162545 |
Malonic acid dyes and polycondensation products thereof
Malonic acid dyes capable of forming polycondensation products have the formula ##STR1## where R 1 and R 2 are each independently of the other hydroxyl, C 1 -C 6 -alkoxy, chlorine or bromine, ...
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5147628 |
Process for producing alkyltetrahydroanthrahydroquinones and working solutions containing them for producing hydrogen peroxide by the anthraquinone process
A process is disclosed for preparing alkyltetrahydroanthrahydroquinones in a solvent system suitable for the production of hydrogen peroxide. The resulting alkyltetrahydroanthrahydroquinone...
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5118823 |
Oxidation of dihydroxyaromatic compounds to quinones
Disclosed is a process for making quinones by oxidation of dihydroxyaromatic compounds in the presence of oxygen using supported platinum catalysts.
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5107004 |
2-neopentylanthraquinone, processes for its preparation and methods for its use
The novel compound 2-neopentylanthraquinone which is prepared by Friedel-Crafts acylation of neopentylbenzene with phthalic anhydride and subsequent cyclization of the resulting...
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4981982 |
Condensation catalyst and catalytical condensation process for organic carboxylic anhydrides
A condensation reaction catalyst useful for producing an organic compound, for example, anthraquinone compounds from phthalic dianhydride and optionally benzene, comprises a catalytic principal...
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4966984 |
Process for the cyclization of orthobenzoylbenzoic acid
The process for the cyclization of orthobenzoylbenzoic acid into anthraquinone comprising heating orthobenzoylbenzoic acid in the solid phase at a temperature between about 300° C. to 400° C. in...
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4927865 |
Anthraquinoylcarboxylic acid hydrazides, curable compositions and use thereof
Anthraquinones of formula I ##STR1## wherein X is the group --CR 2 R 3 --, where R 2 is H, --CH or C 1 -C 5 -alkyl and R 3 is H or --CN, R 1 is H or C 1 -C 5 -alkyl and R is a direct bond...
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4739062 |
Method of producing paraquinones
A new widely-applicable method has been found for synthesis of 9,10-anthraquinones and similar chemical compounds of wide use in industry and pharmacology, by reacting suitable aromatic substrates...
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