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Patent Searching and Data


Matches 951 - 1,000 out of 5,679

Document Document Title
WO/1998/018866A1
A process for mass colouring high molecular weight organic material by using a pyrimidopteridine of formula (I) and/or (II) or a mixture thereof, wherein A, B, C and D are each independently of one another -NH�2?, -OH, hydrogen, C�1?...  
WO/1998/018996A1
An optical brightening agent contains one or more spiro compounds of formula (I), in which K?1� and K?2� are identical or different conjugated systems and $g(c) stands for C, Si, Ge, Sn or Pb. These optical brightening agents are cha...  
WO/1998/017729A1
The invention relates to a process for preparing organic pigment granules with a particle size from 0.5 to 4 mm, comprising a mixture of at least one organic pigment, a binder having a neutral emulsifier which does not form ions and whic...  
WO/1998/015533A1
2,3-dihydroperimidines of formula (I), in which X, m, R?1� and R?2� have the meaning cited in the description, are produced by the reaction of 1-hydroxy-8-aminonaphthalines of formula (II) with carbonyl compounds of the formula (III)...  
WO/1998/014435A1
An optical brightener of the bis-s-triazinylaminostilbene series having at least one fiber reactive vinyl sulfone substituent. The compounds of the invention provide high whiteness at low application levels.  
WO/1998/008487A2
The invention concerns a composition for dyeing keratin fibres, in particular human hair, containing in an appropriate medium for dyeing: as coupler at least one compound of formula: (I) in which: R�1? represents in particular hydrogen...  
WO/1997/049378A1
The invention discloses novel compositions for oxidation dyeing of keratin fibres comprising at least one particular pyrazolo-[1,5-a]-pyrimidine derivative, the dyeing method using this composition, novel pyrazolo-[1,5-a]-pyrimidine deri...  
WO/1997/049669A1
Compound of general formula (I) where R = -CH2-NH-CO-(2,3-dihydroxyphenyl), CN or -CH2-NH2, n = 1 to 5.  
WO/1997/045492A1
The present invention provides a novel process for the production of organic solvent soluble squaraine dyes. More specifically, the invention describes how a difficult to prepare tetrahydroxy squaraine intermediate can be prepared in an ...  
WO/1997/045491A1
Pyridone colorants of formula (I) in which X is CH or nitrogen, R1 is possibly substituted C1-C20 alkyl or possibly substituted phenyl, R2 is a carbocyclic or heterocyclic radical, R3 is hydrogen or C1-C4 alkyl, R4 is hydrogen or C1-C4 a...  
WO/1997/043695A1
Photochemical acid progenitors in combination with dihydroperimidine squarylium dyes have been found to be particularly effective at generating acid upon irradiation with near-infrared radiation. It has been found that dihydroperimidine ...  
WO/1997/042173A1
The invention discloses new 5-substituted 3,4-diamino pyrazols, their methods of preparation, compositions for keratin fibre oxidation dyeing containing them as an oxidising base, and the dyeing methods using same.  
WO/1997/040104A1
Novel squarate dyes are described, and adducts of these dyes with biologically significant chemical species such as nucleosides or nucleotides. The adducts have useful properties for fluorescent nucleic acid sequencing methods.  
WO/1997/032884A1
A compound of formula (I) wherein: Q represents identical alkyl groups, cycloalkyl groups having from 5 to 7 ring atoms, or aryl or heteroaryl groups having from 5 to 12 ring atoms and R represents identical hydrogen, alkyl, alcohol or c...  
WO/1997/028221A1
A process for the preparation of a polycyclic dye of Formula (1) which comprises the steps: i) reaction of a compound of Formula (2) with a compound of Formula (3) or a derivative thereof to form an intermediate of Formula (4) and ii) re...  
WO/1997/008245A1
Effective anti-corrosive pigments are obtained using basic or neutral to basic polyvalent metal organophosphonates. The anti-corrosive organophosphonate pigments may optionally contain a co-acidic substance such as silica. The organophos...  
WO/1997/004031A1
A disperse dye mixture which comprises, on a weight basis, from 5 % to 70 % of the dye of Formula (1), from 5 % to 70 % of the dye of Formula (2), and from 0 % to 40 % of the dye of Formula (3), wherein each of R and R1 represents an alk...  
WO/1996/036882A1
This invention describes the use of merocyanine dyes, including styryl dyes, for detecting and quantifying poly(amino acids) by absorbance or fluorescence. Poly(amino acids) are detected in solution, in electrophoretic gels, or on solid ...  
WO/1996/034916A2
Compounds and ink compositions. An ink composition comprising a compound of formula (1) and salts thereof, wherein Ch represents an arrangement of atoms which causes the compound to absorb electromagnetic radiation; Ra and Rb each indepe...  
WO/1996/035142A1
An infrared photosensitive element comprising: a support bearing an infrared radiation-sensitive silver halide material; and an antihalation layer comprising a basic antistatic agent, an acid having a pKa less than 4.2 in an amount equal...  
WO/1996/034591A1
Novel compositions for oxidation colouring of keratin fibres, containing one or more particular diaminopyrazole derivatives are described, as well as a colouring process using this composition, novel diaminopyrazole derivatives and a met...  
WO/1996/033692A1
The present invention relates to the use of compounds of general formula (I) in which R1 to R3 and n are as defined in claim 1, as couplers in the production of oxidation pigments and hair colorants which contain the compounds of general...  
WO/1996/022332A1
The invention concerns quaterrylene tetracarboxylic acid diimides of formula (I), in which the variables have the following meanings: R represents hydrogen; C1-C30-alkyl whose carbon chain can be interrupted by one or more of the groupin...  
WO/1996/022331A1
The invention concerns a process for producing and purifying perylene-3,4-dicarboxylic acid imides by reaction of a perylene-3,4,9,10-tetracarboxylic acid or corresponding anhydrides using a primary amine: reaction is carried out in the ...  
WO/1996/021062A1
The invention concerns paper-coating compounds which have high brightness, a high greying limit and high light-fastness and can be produced by means of optically brightened fine-particle plastics.  
WO/1996/017893A1
Disclosed are benzopyran dyes of formula (I), wherein n is 1 or 2; X1 is oxygen or imino; X2 is cyano or carbamoyl; R1 and R2 are C1-C13 alkyl, where the sum of the carbon atoms in R1 and R2 must be at least 10, and R3 is hydrogen, C1-C6...  
WO/1996/016327A1
A fluorescent metal-chelating amphiphile having structures (a) or (b) wherein A is a hydrophobic fluorophore, X and Y are aliphatic hydrocarbons having from 9 to 25 carbon atoms, B is a hydrophilic spacer, C is a metal chelator, and L is...  
WO/1996/015195A1
The invention concerns pyridone dyes of the formula (I) in which X is nitrogen or CH, R1 is a five-membered or six-membered carbocyclic or heterocyclic group, R2 is cyano, carbamoyl, C1-C6 alkoxycarboyl or C1-C4 alkanoyl and R3 is option...  
WO/1996/009289A1
A photopolymerizable composition comprising a squarylium compound represented by general formula (I), a free-radical generator and an addition-polymerizable compound having at least one ethylenic unsaturation, wherein R represents C2-C8 ...  
WO/1996/008537A1
A process for producing an organic pigment represented by the general formula (I): A(H)x(CH3)y, characterized in that an organic pigment represented by the formula (II): A(H)x+y, is reacted with dimethylcarbonate in the presence of a bas...  
WO/1996/006137A1
The invention concerns naphtholactam derivatives of formula (I), in which: R1 represents hydrogen, optionally substituted C1-C6 alkyl, C5-C6 cycloalkyl or substituted phenyl; R2 and R3 represent hydrogen, C1-C8 alkanoyl, optionally subst...  
WO/1996/004576A1
Described are novel reversible photochromic phenanthropyran compounds, exemples of which are substituted 2H-phenanthro[4,3-b]pyran and 3H-phenanthro[1,2-b]pyran compounds. The 2H-phenanthropyran compounds have certain substituents at the...  
WO/1996/001883A1
The description relates to an object of synthetic material, especially a plastic spectacle lens, tinted with at least one photochromatic substance which is also excited by light in the u/v region of the spectrum and, in the excited state...  
WO/1996/000560A2
The present invention provides novel dental impression materials, the cure of which can be monitored visually, comprising: (1) a curable silicone polymer; (2) a crosslinker compound containing silicon-bonded-hydrogen groups; (3) a hydros...  
WO/1996/000410A1
Photothermographic elements having improved post-processing stability are described. These elements comprise a support bearing at least one photosensitive, image-forming photothermographic-emulsion layer comprising: (a) a photosensitive ...  
WO/1995/034846A1
An electrophotographic toner contains a polymer binder and a colouring agent having formulas (I) and/or (II), in which D stands for a residue having formulas (III) or (IV); R stands for C1-C13-alkylamino, C1-C4-alkyl-substituted phenyl o...  
WO/1995/032969A1
The invention concerns the use of diazapentalene derivatives of formula (I), in which X and Y are leaving groups which are less nucleophilic than thiol compounds, as a thiol-specific fluorochrome in the determination of compounds contain...  
WO/1995/031959A1
The object of the invention is the use of 2-oxyacetic acid derivatives for colouring keratin-containing fibres, especially human hair, and colorants containing said compounds, especially in combination with amines, amino acids and phenols.  
WO/1995/029958A1
The invention concerns methine dyes of formula (I) in which: R means hydrogen, optionally substituted C1 to C10 alkyl or optionally substituted phenyl; X means nitrogen or a residue of the formula CQ1, CH=CQ1-CH, CH=CH-CH=CH-CH, (i) or (...  
WO/1995/029924A1
A compound, in metal-free or metal complex form of formula (1) to (3) in which R is hydrogen or C1-30 alkyl; X is hydrogen, halogen (preferably Cl or Br) or C1-30 alkyl.  
WO/1995/028447A1
A disperse dye of formula (1), in which R1 is alkyl, cycloalkyl, aryl, alkenyl or aralkyl each of which may be optionally substituted; R2 and R3 each independently is optionally substituted alkyl; R4 is -H, -OH or alkyl, alkoxy, - NHCOal...  
WO/1995/028396A1
Phenol derivatives of the general formula (I) in which R1, R2, R3, X, Y and Z have the meanings given in the description, a process for their production and their use, especially in non-linear optics.  
WO/1995/023890A1
A process for colouring a synthetic textile material or fibre blend thereof which comprises applying to the synthetic textile material a dye, which is free from water solubilising groups, carrying at least one -SO2F group provided that t...  
WO/1995/023357A1
Dihydroperimidine squarylium dyes have been found to be particularly effective when used as acutance and antihalation dyes for photothermographic and photographic articles. The dihydroperimidine squarylium dye has the nucleus (I).  
WO/1995/022581A1
The invention relates to triazolopyridine dyes of formula (I) where one of the two groups A and E stands for nitrogen and the other stands for a group of formula C-R1, in which R1 stands for optionally substituted C1-C20 alkyl, optionall...  
WO/1995/021219A1
Disclosed is a method for preparing methine or azamethine dyes based on pyridine dyes, wherein oxime- or formylpyridine or a tautomeric form thereof is condensed with 5-membered aromatic heterocycles.  
WO/1995/017470A1
Pyridone dyes of formula (I) in which X is nitrogen or C-CN, R1 and R2 are optionally substituted C1-C10 alkyl, C5-C7 cycloalkyl, C3-C4 alkenyl, optionally substituted phenyl or R1 and R2 together with the nitrogen atom bonding them are ...  
WO/1995/015144A1
Keratin-containing fibres, in particular human hair, are dyed using dyes using dyes of formulae (1) to (9) indicated in claim 1.  
WO/1995/011001A1
The use of 1,3-propandiones for dyeing keratinic fibres, in particular human hair, is disclosed, as well as dyes that contain these compounds, in particular combined with amines and aminoacids.  
WO/1995/011002A1
The invention concerns the use of ethane diones for dyeing keratin-containing fibres, in particular human hair, as well as dyeing agents containing these compounds, in particular in combination with amines, amino acids and phenols.  

Matches 951 - 1,000 out of 5,679