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| Number | Title | Issue Date |
| 7128779 | Ink jet ink, method for producing ink jet ink, ink jet recording method and ink cartridge An ink jet ink includes at least a coloring material. The coloring material is at least one of C.I. Food Black 2 and C.I. Direct Black 195, and a compound represented by the following general formula (I) or a salt thereof ... | 10/31/2006 |
| 6114512 | Oligomeric azo dyes Oligomeric azo dyes having an alternating construction made up of diazo components and coupling components, containing in the molecule at least 3 units of the structure I --[D--K]-- (I) where D is a tetrazo compo... | 09/05/2000 |
| 6011141 | Acid polyazo dyes Polyazo dyes of the formula ##STR1## where n, Y1, Y2, Y3, Y4, X, R1, R2 and R3 are each as defined in more detail in the description are useful for dyeing natural or synthet... | 01/04/2000 |
| 5973125 | Macroazo compound, a process for its production, a macroazo initiator, and a process for its use An azoamide compound of the formula: ##STR1## wherein R1 through R4 are independently an alkyl group; X is an alkylene groupl Y is --O-- or --NH--; and n is an integer of 2 or more, is effective for producing a macroazo compound... | 10/26/1999 |
| 5637679 | Azo dyestuffs for dyeing and printing cellulose-containing fiber materials in an ink jet process New azo dyestuffs of the formula (I) ##STR1## wherein n in each case independently of one another represents 0 or 1, a, b and c independently of one another denote 1 or 2, a+c | 06/10/1997 |
| 5549853 | Linked azo dyes Azo dyes of the formula W(--X--Y--Chr)n, where n is 2 to 6, y is C1 -C6 -alkylene, Chr is the radical of a mono- or polyazo dye, X is a radical of the formula CO--O or O--CO and W is an n-valent radical which is derived from an unsubstit... | 08/27/1996 |
| 5536818 | Dichroic azo dye, liquid crystal composition containing the same, and liquid crystal element using the composition A dichroic dye represented by the formula (I) or (II): ##STR1## wherein the substituents are as described in the specification. The dichroic dyes (I) and (II) exhibit excellent dichroism and can be prepared from 2,2'-ditrifluoromethylbenzidine having... | 07/16/1996 |
| 5204454 | Prepolymeric polyols containing mesogenic units Prepolymer polyols containing mesogenic moieties useful as reactants for the preparation of resinous materials are disclosed. Synthesized by condensing a polyether polyol with bifunctional mesogenic diacids, or diesters, the compounds of the invention are... | 04/20/1993 |
| 5145953 | Monomers of biscyclobutarenes bridged by at least one azo linkage A biscyclobutarene monomer is prepared having two cyclobutarene moieties bridged by a divalent radical having at least one azo linkage. The monomers can be polymerized to form polymers exhibiting outstanding thermooxidative stability at high temperatures ... | 09/08/1992 |
| 4978747 | Colorants obtained by reacting a NH2 -containing dyestuff with a diisocyanate followed by reaction of this adduct with a diamine Colorants are obtained by reacting a dyestuff which is free from ionic groups and hasą£2 NH2 groups which are preferably arranged in such a manner that they do not participate in the resonance of the chromophore with such an amount of a (cyclo... | 12/18/1990 |
| 4822424 | Hexakisazo dyes-containing aqueous compositions A composition comprising an aqueous solution of, and also an aqueous ink containing, a hexakisazo dye represented by the formula ##STR1## wherein X is --CH.dbd.CH--, --CONH--, --CRH-- (wherein R is phenyl which may have H or a sulfonic acid group), -... | 04/18/1989 |
| 4804411 | Recording liquid A recording liquid comprising a solution of a recording agent is provided. The recording agent has a structure containing a plural number of structural units linked together through a linking group or groups. The structural unit may be a dye residue.... | 02/14/1989 |
| 4758659 | Hexakisazo dyes A hexakisazo dye suitable for dyeing cellulose, natural or synthetic polyamide meterials, leather, represented by the formula ##STR1## wherein X is --CH.dbd.CH--, --CONH--, --CRH-- (wherein R is phenyl which is unsubstituted or substituted by H or a ... | 07/19/1988 |
| 4535044 | Photosensitive material for electrophotography containing photosensitive layer incorporating pentakisazo pigment Disclosed is a photosensitive material for electrophotography containing a pentakisazo pigment of the following formula: ##STR1## wherein the rings A1 and A2 may have halogen atoms, alkyl groups or alkoxy groups as substituents ... | 08/13/1985 |
| 4308163 | Novel yellow azo dyes and dichroic liquid crystal composition made therewith Novel yellow azo dye compositions and a liquid crystal composition containing the yellow azo dye composition are disclosed. The yellow azo dye composition, having terminal ester groups has the general formula: ##STR1## wherein R and R' are acyl group... | 12/29/1981 |
| 4308164 | Novel yellow azo dyes and dichroic liquid crystal composition made therewith Novel yellow azo dye compositions and a liquid crystal composition containing the yellow azo dye composition are disclosed. The yellow azo dye composition, having terminal ester groups has the general formula: ##STR1## wherein R and R' are acyl group... | 12/29/1981 |
| 4308162 | Novel yellow azo dyes and dichroic liquid crystal compositions made therewith Novel yellow azo dye compositions and novel liquid crystal compositions containing the yellow azo dye composition. The yellow azo dye composition, having terminal ester groups, has the general formula: ##STR1## wherein R and R' are alkyl or substitut... | 12/29/1981 |
| 4308161 | Novel yellow azo dyes and dichroic liquid crystal compositions made therewith Novel yellow azo dye compositions and a liquid crystal composition containing the yellow azo dye composition are disclosed. The yellow azo dye composition, having terminal ester groups, has the general formula: ##STR1## wherein R and R' are acyl grou... | 12/29/1981 |
| 4145114 | Pleochroic dyes A dye compound suitable for use in solution with a liquid crystal material is characterized by one of the following formulae: ##STR1## (III) a derivative of (I) or (II) containing one or more simple lateral substituents or bridging groups on the benz... | 03/20/1979 |
| 4128497 | Dichroic liquid crystal compositions Dichroic liquid crystal compositions for use in displays are mixtures of a liquid crystal host material and at least one of a plurality of dyes each having a plurality of azo (--N.dbd.N--) bonding groups and a high order parameter. The dichroic liquid cry... | 12/05/1978 |
| 3969339 | Water-soluble pentakis-azo dyestuffs derived from 4,4'-diaminoazobenzene The invention is directed to pentakisazo dyestuffs of the formula: ##SPC1## In which A1 and A2 may be the same or different and each is monosulphonaphthylene, hydroxy-monosulpho-naphthylene or hydroxy-disulphonaphthylene and B1 | 07/13/1976 |
| 3949015 | Internally plasticized poly(vinyl chloride) Macroazonitrile molecules formed of flexible poly(ethylene oxide) segments connected by azo linkages are heated in the presence of vinyl chloride to initiate the addition polymerization of the monomer onto the ends of the poly(ethylene oxide) segments. An... | 04/06/1976 |
