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| Number | Title | Issue Date |
| 7438753 | Diazo dyestuff compounds and their use The present invention relates to a diazo dyestuff compound of the following formula (I) wherein, M is H, Na, or Li. The formula (I) compound is particularly suitable for using as a component in a black dye composition for i... | 10/21/2008 |
| 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 |
| 7364597 | Metal complex colorant comprising azo moiety A metal complex colorant represented by formula 1 may embody various colors and has improved fastness, such as light resistance, water resistance and the like: wherein each of A1 and A2 is independentl... | 04/29/2008 |
| 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 |
| 7247195 | Dye sets for ink-jet ink imaging The present invention is drawn to dye sets for formulating ink-jet inks, including ink sets having six ink-jet inks. In one embodiment, the dye set can comprise a yellow dye for formulating a yellow ink, a pair of magenta dyes for formulating a magenta ink and a pal... | 07/24/2007 |
| 7220843 | Methanesulfonamide azo dyes This invention relates to monoazo, disazo and trisazo colorants of the formula (I) where M represents two hydrogen atoms or one metal ion selected from the group consisting of Cu, Co, Ni, Mn, Zn and ... | 05/22/2007 |
| 7217803 | Benzimidazole-pyridone-based azo dyes The present invention relates to azo dyes of formula (1) which are soluble in organic solvents, wherein R1 is —CN, —COOR5, —CONR6R7 or a heterocyclic ring, R2 is unsubstituted or substituted alkyl, unsubst... | 05/15/2007 |
| 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 |
| 6997978 | Magneta ink-jet inks The present invention is drawn to magenta dye blends and magenta ink-jet inks that can be used in ink sets for creating photo quality images. The dye blend can comprise a nickel-containing azo dye blended with a rhodamine dye at a 1:80 to 125:4 weight ratio. ... | 02/14/2006 |
| 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 |
| 6984723 | Use of copper complexes of disazo dyes for dyeing natural and synthetic material Use of the mono-copper complex of a dye of formula (1) wherein Z1, Z2, R1, R2, R3, R4, X, n and m are as defined in the claims, and mixtures thereof with the bis-copper complex of such a dye, for dyei... | 01/10/2006 |
| 6930178 | 1:2 chromium complex dyes The present invention relates to novel 1:2 chromium complex dyes, processes for their preparation and their use for dyeing or printing fiber materials containing hydroxyl groups or containing nitrogen. The present invention relates to a 1:2 chromium complex d... | 08/16/2005 |
| 6844428 | Use of disazo compounds The invention relates to the use of disazo compounds according to formula (I) wherein all substituents are as defined in claim 1 salts thereof and mixtures of these compounds for dyeing or printing or... | 01/18/2005 |
| 6767394 | Dye composition A composition comprising a dye of Formula (I) and a dye of Formula (II) or salts thereof, and use of the composition in ink jet printing ... | 07/27/2004 |
| 6727351 | Azoxy dyes and their Cu complexes Azoxy dyes of the general formula I in the form of the free acid where n is 0 or 1, each R1 is selected from the group consisting of methoxy, hydroxyl and carboxyl, each R2 is s... | 04/27/2004 |
| 6712862 | Granular compacts, their production and use Granular compacts (G) of a mixture of (A) at least one water-soluble dye or optical brightener, and (B) extender and, optionally, (C) at least one hydrophilic surfactant and/or (D) further additives, additionally containing (E) a d... | 03/30/2004 |
| 6660048 | Aqueous dye solutions The aqueous dye solutions of the composition shown in claim 1 are distinguished by a good storage stability and are suitable for dyeing paper in red color shades.... | 12/09/2003 |
| 6511535 | Method for printing fibrous textile materials using the ink jet technique The invention relates to a method for printing fibrous textile materials using the ink-jet printing technique, wherein the fibrous materials are printed with an aqueous ink that comprises at least one acid dye according to claim 1 and that has a viscosity... | 01/28/2003 |
| 6365719 | Bridged disazo compounds Compounds of formula (I) ##STR1## with the meanings of D, R1, R2, X and Y as given in claim 1 can be used as paper dyes or direct dyes or for the preparation of ink-jet inks.... | 04/02/2002 |
| 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 |
| 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 |
| 6130320 | Acid disazo dyes as well as sulphonamides as their intermediate product Disazo dyes of formula (I) where one of the two symbols X1 and X2 means hydroxy and the other amino and R1, R2, R3, R4, R5, R6, R7 and R8 are as defin... | 10/10/2000 |
| 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 |
| 6084078 | Disazo dyestuffs for dyeing cellulosic materials The novel disazo dyestuffs of the formula (I) in which the substituents and indices have the meanings given in the description, are outstandingly suitable for dyeing cellulosic materials in red-violet to blue brilliant color shades.... | 07/04/2000 |
| 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 |
| 6031083 | Disazo dyestuffs The new disazo dyestuffs of the formula (I) ##STR1## wherein the substituents and the indices have the meanings given in the description, wherein more than 25 equivalent % of all the M cations in the molecule are alcohol ammonium radicals of the form... | 02/29/2000 |
| 5922085 | Preparation of a dye for coloring protein-based fibers and cellulose-based materials from the oxidation products of the manufacture of a triphenylmethane dye A process of preparing a dye composition and a resultant dye composition. The process includes preparing a mixture comprising a triphenylmethane dye and oxidation products by reacting methylenedianiline, aniline, an oxidation catalyst, and an oxidant; sep... | 07/13/1999 |
| 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 |
| 5834602 | Acid disazo dyes Disazo dyes of the formula ##STR1## where the ring A may be benzofused, X is hydrogen or C1 -C4 -alkyl, R1 is hydrogen, C1 -C4 -alkyl, halogen, carboxyl, C1 -C4 -alkoxycarbonyl o... | 11/10/1998 |
| 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 |
| 5668259 | Metallizable disazo compounds having 1, 3-dihydroxybenzene bis-coupling component radicals, iron complexes thereof and mixtures of such iron complexes Compounds of the formula ##STR1## iron complexes thereof and mixtures of such iron complexes, wherein D is a monocyclic or bicyclic aromatic diazo component radical of the benzene series containing one --SO3 M group or is ##STR2## ... | 09/16/1997 |
| 5665124 | Process for dyeing and printing materials containing hydroxyl and/or carboxamide groups Dyeings having improved properties are obtained with a dyestuff of the following formula ##STR1## wherein the substituents have the meaning given in the description.... | 09/09/1997 |
| 5650497 | Azo dyes, processes for their preparation and their use Azo dyes of the formula ##STR1## in which R1, R2, R3, R4 and R5 independently of one another are hydrogen, C1 -C4 alkyl, C1 -C4 alkoxy or halogen, R | 07/22/1997 |
| 5632783 | Mixtures of reactive dyes for navy shades Reactive dye mixtures comprising the dyes of the formulae ##STR1## where Kat.sym. is a cation, L is C2 -C4 -alkylene, and X1, X2, Y1 and Y2 are each vinyl or a radical of the ... | 05/27/1997 |
