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| Number | Title | Issue Date |
| 6699976 | Polyazo compound or salt thereof and dye-based polarization film containing the same A polyazo compound or salt thereof covering the region of from 500 to 580 nm and manifesting high initial polarization ability and represented by the following formulae (I) or (II): ##STR1## wherein, A represents a phenyl having sulfo and/or carboxyl ... | 03/02/2004 |
| 6399752 | Polyazo compound or salt thereof and dye-based polarization film containing the same A polyazo compound or salt thereof of the following formula (I): ##STR1## wherein, A represents a naphthyl having 1 to 3 sulfos or a phenyl having 1 to 2 hydrophilic groups selected from sulfo and carboxyl and optionally having a lower alkyl or lower alko... | 06/04/2002 |
| 6277966 | Azo-compounds and dye polarizing films containing them An azo-compound, free acid form of which is represented by the following formula (I): ##STR1## wherein A and B represent, independently with each other, a phenyl having one or two groups selected from sulfo and carboxyl or a naphthyl having 1 to 3 su... | 08/21/2001 |
| 6140477 | Near-infrared ray absorbing polyazo compound A polyazo compound capable of effectively absorbing near-infrared rays, which can be produced from readily available raw materials is provided, which comprises at least one --OH group or at least one group derived from --OH group at p-position of the azo ... | 10/31/2000 |
| 6072042 | Bis(aminocarbonylnaphthol) derivative The present invention provides a bis (aminocarbonylnaphthol) derivative which is useful as a raw material for novel azo pigments by bisamidation of each one carboxyl group of two 2-hydroxynaphthalene-3,6-dicarboxylic acids using an aliphatic or aromatic d... | 06/06/2000 |
| 5446135 | Sulfonyloxy substituted tris-azoaryl dyes and copper complex salts thereof and polarizing films dyed therewith Dyes having the specific structural formula (1) set out below, their copper salt dyes, water-soluble azo dyes containing the dyes or the copper salt dyes, and polarizing films containing the water-soluble azo dyes: ##STR1## wherein A means a benzene ... | 08/29/1995 |
| 5318856 | Water-soluble azo dyes and polarizing films using the dyes Dyes having the specific structural formula (1) set out below, their copper salt dyes, water-soluble azo dyes containing the dyes or the copper salt dyes, and polarizing films containing the water-soluble azo dyes: ##STR1## wherein A means a benzene ... | 06/07/1994 |
| 5213614 | Ink, ink jet recording process and recording apparatus using the same An ink comprising: water, a water soluble organic solvent, and a colorant represented by the following general formula (I): ##STR1## wherein Q1 is a substituted phenyl group; Q2 is a substituted or unsubstituted p-phenylene or a substituted or unsubs... | 05/25/1993 |
| 5198022 | Waterfast dye and aqueous ink A alkali-soluble dye for a waterfast ink having structural formula as follows: ##STR1## and an ink containing the dye dissolved in water. Printing from the ink is insoluble below pH 6.0; is an intense black at low concentration; and remains blac... | 03/30/1993 |
| 5180817 | Trisazo compounds and use thereof A trisazo compound represented by the following formula in the free acid form: ##STR1## wherein Q1 and Q2 independently of one another are each unsubstituted or substituted phenyl or naphthyl group and l represents 0 or 1, ... | 01/19/1993 |
| 5178671 | Ink, and ink-jet recording method and apparatus employing the ink Provided is an ink comprising a recording agent and a liquid medium for dissolution or dispersion thereof, the recording agent being a compound represented by the general formula ##STR1## where R1 is a radical selected from the group of lo... | 01/12/1993 |
| 5167703 | Ink, ink-jet recording process and instrument making use of the ink Provided is an ink comprising at least water, a water-soluble organic solvent, and a dye, the dye comprising a compound represented by the general formula (I): ##STR1## wherein R1, R2, and R3 are respectively hydrogen... | 12/01/1992 |
| 5127946 | Ink, and ink-jet recording method and apparatus employing the ink Provided is an ink containing a recording agent and a liquid medium for dissolution or dispersion thereof, said ink comprising, as the recording agent, a compound represented by the general formula (A) ##STR1## where n is 0 or 1; R1, R | 07/07/1992 |
| 5049238 | Method of dyeing paper utilizing trisazo dyes A method of dyeing paper utilizing dyes suitable for dyeing paper in blue shades having the formula ##STR1## wherein R is hydrogen, --OH, --OR1 , --NH2, NHR1, --NHCOR1, --NHSO2 R1, --N... | 09/17/1991 |
| 4910299 | Disperse azo dyes containing N-phenoxyalkyleneanilines as coupling components Disperse dyes suitable for dyeing textile material composed of polyester dyes of the formula ##STR1## in which D is the radical of a substituted or unsubstituted, homocyclic or heterocyclic diazo component belonging to the series comprising thienyl, ... | 03/20/1990 |
| 4841037 | Amino sulfonaphtholtrisazo compounds and recording liquids containing the same A naphthalene trisazo compound represented by the general formula (I) or (II): ##STR1## wherein A and B each represents a substituted or unsubstituted benzene or naphthalene ring; m represents zero or 1; and M represents an alkali metal atom, am... | 06/20/1989 |
| 4743523 | Photosensitive member for electrophotography A photosensitive member for electrophotography comprising a photosensitive layer containing an azo pigment selected from those represented by the following formulas (1)-(6): ##STR1## wherein R is an alkyl, aralkyl, aryl, or acyl each capable of havin... | 05/10/1988 |
| 4670548 | Sulfo-group-containing trisazo dyestuffs Water-soluble dyestuffs of the formula wherein A denotes sulphophenyl or sulphonaphthyl, which are optionally further substituted, B denotes sulpho-1,4-naphthylene, which is optionally further substituted, C denotes 1,4-phenylene or 1,4-naphthylene, which are optio... | 06/02/1987 |
| 4600674 | Trisazo electrophotographic photoconductive material Disclosed is an electrophotographic photoconductive material excellent in sensitivity and durability which comprises an electroconductive substrate and, provided thereon, a photosensitive layer containing a trisazo pigment represented by the general formu... | 07/15/1986 |
| 4594410 | Azo compounds containing both sulfo groups and basic or cationic groups which compounds are in metal-free or 1:1 metal complex form Azo dyes of the formula ##STR1## and external salts thereof, wherein F is the residue of a monoazo or disazo compound in 1:1 metal complex form or of a trisazo, disazoazoxy or tetrakisazo compound in metal-free or 1:1 metal complex form, each X is in... | 06/10/1986 |
| 4591634 | Trisazo/azoxy dyestuff mixtures Trisazo/azoxy dyestuff mixtures which in the form of free acid correspond to the formula ##STR1## in which R denotes H or optionally substituted alkyl, X and Y denote H, alkyl, alkoxy, halogen, hydroxyl, alkylsulphonyl, optionally mono- or di-alkyl-s... | 05/27/1986 |
| 4485042 | Dyestuff containing at least three azo bridges Leathers can be advantageously dyed with water-soluble polyazo dyestuffs having, in the form of the free acid, the formula ##STR1## wherein A is a member of the benzene, naphthalene or heterocyclic series; B has the formula ##STR2## n is the num... | 11/27/1984 |
| 4479906 | Trisazo dye Trisazo dyes containing sulfo groups and having the formula: ##STR1## which for the most part give black colorations on paper and particularly on leather and are therefore especially useful as leather dyes.... | 10/30/1984 |
| 4339240 | Color changing polyacetylenic compounds Acetylenic compounds such as 2,6-hexadiyn-1,6-diol-bis(p-phenylazophenylsulfonate) having a conjugated acetylenic portion capable of polymerization on exposure to actinic radiation and thermal annealing and a chromophoric portion. The color of the ch... | 07/13/1982 |
| 4265813 | Azo dyestuffs Azo dyestuffs which, in the form of the free acid, correspond to the formula ##STR1## wherein R1 denotes hydrogen, methyl or chlorine, R2 denotes hydrogen, chlorine, acetylamino, methoxy, ethoxy, nitro or carboxyl, R3... | 05/05/1981 |
| 3987024 | Bis- and trisazo sequential free radical initiators used in preparing block and graft copolymers Polyazo compounds containing at least one alkyl or aryl thia or oxa group alpha to at least one of the azo groups in the connecting chain between the azo groups, such as 4-t-butylazo-4-methyl-3-thiapentyl 4-t-butylazo-4-cyanovalerate, which are useful for... | 10/19/1976 |
