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| Number | Title | Issue Date |
| 8137416 | Acid dyes Compounds of the general formula (I) a process for their preparation and their use for dyeing and/or printing organic substrates are described. ... | 03/20/2012 |
| 7637964 | Dye mixtures of fiber-reactive azo dyes, their preparation and their use Reactive dye mixtures which comprise one or more dyes of the indicated general formula (I) and one or more dyes of the hereinbelow indicated and defined general formula (II) where... | 12/29/2009 |
| 7429279 | Dye mixtures of fiber-reactive AZO dyes, their preparation and their use Reactive dye mixtures which comprise one or more dyes of the indicated general formula (i) and one or more dyes of the hereinbelow indicated and defined general formula (II) where... | 09/30/2008 |
| 7387647 | Dye composition and the use thereof A dye composition, comprising (A) at least one disazo dye selected from the formula (I) or (II), wherein R, R1, R2, D1 and D2 are defined as in the specification; and (B) a diazo ... | 06/17/2008 |
| 7381228 | Mono-, Di- or Trichromatic Dyeing or Printing of Natural or Synthetic Polyamide Fiber Materials The present invention relates to processes for mono-, di- or trichromatic dyeing or printing of natural or synthetic polyamide fiber materials, these processes utilizing a) blue-dyeing dye mixture, b) a red-dyeing dye mixture and/or ... | 06/03/2008 |
| 7371831 | Azo dyestuffs Compounds of formula (I) wherein all substituents have the meanings as defined in the Specification, their production and their use. ... | 05/13/2008 |
| 7358345 | Disperse azo dyestuffs The present invention claims dyestuffs of formula (I), wherein D, R1 to R7 and n are defined as given in claim 1, a process for their preparation and their use ... | 04/15/2008 |
| 7341607 | Yellow anionic disazo dyes The present invention relates to novel yellow anionic dyes, a process for their preparation, certain novel intermediates for their preparation and the use of these dyes for dyeing natural or synthetic materials, in particular, paper. ... | 03/11/2008 |
| 7276268 | Poly-azo compound, and polarization film having said compound Poly-azo compound selected from the group consisting compounds of the formula (I) and compounds of the formula (II), (wherein, Me represents copper, nickel, zinc or iron, A represents a naphthyl group having 1 to... | 10/02/2007 |
| 7097702 | Acidic mono azo dyestuffs Disclosed are novel dyestuff for printing recording materials, especially textile fiber materials, paper and papery substrates and plastic films and plastic transparencies by the inkjet printing process of the formula (I) wherein all substituents are defined in the ... | 08/29/2006 |
| 7078497 | Disazo dyes, and copper complexes thereof, for dyeing paper The dyes of formula (1) according to claim 1 and the copper complexes of dyes of formula (2) according to claim 9 or the mixtures of mono-copper complex with the bis-copper complex are excellently suitable for dyeing paper with good light-fastness prop... | 07/18/2006 |
| 6991676 | Dye sets and ink sets for ink-jet ink imaging The present invention is drawn to dye sets for formulating ink-jet ink sets, and to specific ink sets. The dye set can comprise cyan colorant including a phthalocyanine dye; magenta colorant including a copper- or nickel-containing azo dye; and yellow colorant inclu... | 01/31/2006 |
| 6933371 | Bisazo dyestuffs based on hydroxynaphthalene carboxylic acid Disclosed are bisazo compounds of the formula Ia or Ib where R1 is hydrogen or methyl, the X groups are independently —CH2CH2 | 08/23/2005 |
| 6764524 | 1:2 chromium complex dyes, their production and use Asymmetrical 1:2 chromium complex dyes of formula (I), wherein X signifies —SO3M, —SO2NR1R2 or chlorine, Y signifies hydrogen, —SO3M or chlorine, R1 signifies hydrogen, C1-6alkyl, C | 07/20/2004 |
| 6746525 | Disazo dyes and inks containing them A compound comprising a disazo chromaphore and an optionally substituted acyl group linked together through a —SO2—NH— group, inks comprising these compounds, ink jet printer cartridges containing these inks and their use in ink jet printing. ... | 06/08/2004 |
| 6669740 | Dye preparations comprising azo dyes Dye preparations comprising, based in each case on the weight of the preparation, from 0.1 to 30% by weight of one or more dyes from the class of the mono- or polyazo dyes containing no acidic groups, from 0.1 to 20% by weight of a dispersant based on an ... | 12/30/2003 |
| 6635092 | Dye mixtures Disclosed are dye mixtures for shading white paper which may contain fluorescent brightener. The dye mixtures comprise a violet dye according to the formula (1) or (2) indicated in claim 1 and sufficient of a red, blue or further violet anionic azo dye th... | 10/21/2003 |
| 6551364 | Dye mixtures, 1:2 cobalt complex formazan dyes and their use Dye mixtures which comprise at least one 1:2 cobalt complex dye of the formazan compound of the formula ##STR1## in which X is substituted or unsubstituted C1 -C8 alkyl, phenyl, naphthyl, furyl or thienyl, R1 and R2 | 04/22/2003 |
| 6537331 | Dye preparations containing azo dyes Dye preparations comprising, based in each case on the weight of the preparation, from 0.1 to 30% by weight of one or more dyes from the class of the mono- or polyazo dyes containing no acidic groups, from 0.1 to 20% by weight of a dispersant based on an ... | 03/25/2003 |
| 6495660 | Polyamide substrate A process for making a polyamide substrate characterized by enhanced breaking strength and fade resistance is disclosed. The process features the steps of treating a polyamide substrate, preferably a nylon 6 substrate having a hindered amine light stabili... | 12/17/2002 |
| 6451072 | Reactive dyes, process for their preparation and their use Reactive dyes of formula (1) ##STR1## wherein A is phenyl or naphthyl, each of which is unsubstituted or substituted by halogen, C1 -C4 alkyl, C1 -C4 alkoxy, carboxy, sulfo or a fiber-reactive group of formula (... | 09/17/2002 |
| 6309807 | Disazo dye for thermal transfer recording and thermal transfer sheet and ink for thermal transfer recording, employing it A disazo dye for thermal transfer recording of the following formula (I): ##STR1## wherein each of rings A and B which are independent of each other, is a benzene ring which may have a substituent, R1 is a C1-4 substituted or unsubst... | 10/30/2001 |
| 6309427 | Method of coloring aluminum oxide layers 1:2 chromium complex dyes of the formula ##STR1## in which R signifies C1-9 -alkyl or a radical of the formula ##STR2## R1 signifies C1-4 -alkyl, --COOM, --COOR5 or --CONH2, R2 signifies hydroge... | 10/30/2001 |
| 6254671 | Very green-shade yellow metallized disazo pigment In one embodiment, the present invention relates to a green shade yellow pigment composition comprising a compound having the formula: ##STR1## wherein R1 and R2 are independently hydrogen, halogen, an alkyl group having 1 to about 4... | 07/03/2001 |
| 6235064 | Dye containing polarizing film A dye-containing polarizing film having neutral color which comprises at least one disazo dye represented by the formula (I) in the form of the free acid ##STR1## wherein Me is a transition metal selected from copper, nickel, zinc and iron, A1 | 05/22/2001 |
| 6221114 | Colorant salts and their use in dyeing polymeric material Dye salts which are free from fiber-reactive radicals and have the formula ##STR1## where Chr is an (m+n)-valent radical of a chromophore from the series of the metal-free or metal-containing phthalocyanines, of the quinacridones, of the mono-, dis- or po... | 04/24/2001 |
| 6194554 | Disazo dyes The invention relates to novel disazo dyes of the formula ##STR1## in which the substituents and indices have the meaning stated in the disclosure, that are suitable for dyeing and printing polymeric materials and for the preparation of recording liquids ... | 02/27/2001 |
| 6120561 | Process for the preparation of low-salt, liquid dyestuff preparations Process for the preparation of low-salt liquid dyestuff preparations, characterized in that they are obtained by: a) diazotization of an aromatic amine, b) 2-fold coupling of the diazo component obtained according to a) to I-acid-urea, in the presence of an in... | 09/19/2000 |
| 6080209 | Stable colorant compositions Stable aqueous dye compositions containing at least one anionic colorant and at least one pigment and a polyanionic thickening agent. The dye compositions may be used to dye leather.... | 06/27/2000 |
| 5928386 | Process for trichromatic dyeing or printing A process for dyeing or printing natural or synthetic polyamide fiber material by the trichromatic technique, which comprises using at least one blue-dyeing dye of formula ##STR1## together with at least one red-dyeing dye of formula ##STR2## ... | 07/27/1999 |
| 5883234 | Process for dyeing cellulosic materials with disazo dyestuffs The novel process for dyeing cellulosic materials with disazo dyestuffs of the formula ##STR1## in which the substituents NHR1 and NHR2 are in each case in the 6- and/or 7-position and R1, R2, m, n, p and q... | 03/16/1999 |
| 5864002 | Process for coloring polymer resins and products thereof A method of providing for manufacturing a colored polymer resin having the steps of: (a) blending a disazo colorant into a mixture of monomers, the colorant having a poly(oxyalkylene) substituent comprising from 2 to 200 alkylene oxide residues, bonded to... | 01/26/1999 |
| 5824118 | Dyeing automobile seat covers containing acrylic or cationic-dyeable polyester A dye which is durable for practical use in the field of coloring automobile seat materials for which a good light-fastness is required and a dyeing method making use of the dye is provided. In the method, a disazo dye is obtained by converting guanazole ... | 10/20/1998 |
| 5808016 | Disazo dyestuffs The novel disazo dyestuffs of the formula (I) ##STR1## in which the substituents and indices have the meaning given in the description, are outstandingly suitable for dyeing cellulosic materials, in particular paper, and are distinguished by good fas... | 09/15/1998 |
| 5704951 | Mixtures of blue-dyeing fiber-reactive dyes and their use for dyeing hydroxy-and/or carboxamido-containing fiber material A solid or dissolved dye mixture of azo dyes having fiber-reactive groups of the vinyl sulfone series, yielding dyeings of blue color shade, comprising one or more copper formazane dyes of the general formula (1) shown and defined in claim 1, one or more ... | 01/06/1998 |
| 5700296 | Azo compound and a polarizing film containing the same An azo compound of the following formulae (I) or (II): ##STR1## wherein Q1 represents a phenyl group or a naphthyl group, Q2 represents a phenyl group; R represents hydroxy group; R1 and R2 each independent... | 12/23/1997 |
| 5697985 | Process for the preparation storage-stable dye dispersions This invention relates to a process for the preparation of storage-stable dye dispersions of alkali metal salts of anionic azo direct dyes by (a) preparing an aqueous slurry of an alkali metal salt of an azo direct dye, said salt having a solubility in water a... | 12/16/1997 |
| 5693103 | Process for dyeing polyester/cotton blends A single bath process for exhaust dyeing polyester and cotton fiber blends by the use of a fiber reactive, vinyl sulfone dye in admixture with a disperse dye under alkaline pH conditions.... | 12/02/1997 |
| 5690698 | Black dye mixtures of fiber-reactive azo dyes and their use for dyeing hydroxyl- and/or carboxamido-containing fiber material A dye mixture of azo dyes having fiber-reactive groups of the vinylsulfone series, comprising one or more navy-blue disazo dyes with the bivalent 1-amino-8-hydroxy-3,6-disulfo-naphthylene coupling component, one or more red-dyeing mono azo dyes, containin... | 11/25/1997 |
| 5676708 | Non-mutagenic dye A dye composition that presents lower mutagenic characteristics useful in coloring petroleum products comprising a substantial amount of the dye of the formula ##STR1##... | 10/14/1997 |
