Basic Dye, Including Diphenylmethane, Triphenylmethane, Xanthene, Fluorene, Methine, Acridine, Oxazine, Phenazine, Flavylium, Naphthoperinone, Quinophthalone, Etc., Group-containing Patents (Class 8/657)
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Patent number: 6623531Abstract: The invention relates to a hair dye composition having markedly high dyeing power, less color fade over time, and undergoes a small change in the color tone of the dye even after storage.Type: GrantFiled: June 26, 2001Date of Patent: September 23, 2003Assignee: Kao CorporationInventors: Yukihiro Ohashi, Hajime Miyabe, Kenichi Matsunaga
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Patent number: 6610131Abstract: Novel magenta and cyan colorants for utilization within water-based inks are provided which exhibit improved chromatic properties. In particular, such colorants provide magenta or cyan colorations that exhibit increased color space characteristics, high water solubility, excellent compatability with impurities, and correspondingly cost-effectiveness for flexographic printing procedures. The methods of utilizing such colorants within flexographic printing processes are also encompassed within the invention.Type: GrantFiled: September 28, 2001Date of Patent: August 26, 2003Assignee: Milliken & Co.Inventors: Philip G. Harris, Patrick D. Moore
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Patent number: 6592633Abstract: The invention relates to a dye composition for keratin fibers, in particular for human keratin fibers such as the hair, having, in a medium suitable for dyeing, at least one cationic direct dye of given formula, and containing at least one specific cationic or amphoteric substantive polymer. The invention also relates to the dyeing processes and devices using the composition.Type: GrantFiled: May 25, 1999Date of Patent: July 15, 2003Assignee: L'Oreal S.A.Inventors: Gérard Lang, Jean Cotteret
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Patent number: 6551362Abstract: A composition for dyeing material of synthetic aromatic polyamide fibers, said composition containing a mixture of (a) a cationic dye and (b) a cyclohexenone as a dye assistant. Preferably, 2-cyclohexen-1-one,3,5,5-trimethyl is the dye assistant.Type: GrantFiled: February 2, 2001Date of Patent: April 22, 2003Assignee: BGB Stockhausen GmbHInventors: Darrin McBane Guthrie, Harold Kenneth Greeson, Jr., Malcolm S. Haith
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Patent number: 6533826Abstract: Process for preparing aqueous solutions of cationic di- and triarylmethane dyes by the aqueous dye solution, which contains organic solvents, being concentrated by nanofiltration and optionally diluted with water.Type: GrantFiled: February 8, 2001Date of Patent: March 18, 2003Assignee: BASF AktiengesellschaftInventors: Thomas Gessner, Gunter-Rudolf Schröder, Robert Reinhardt
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Patent number: 6524350Abstract: Stabilized metachromatic dyes, especially at application concentrations, comprising metachromatic dyes dissolved in one or more non-aqueous solvents, as well as metachromatic dyes dissolved in pH stabilized aqueous solutions. Also, various combinations of treatments are disclosed for stabilizing metachromatic dyes.Type: GrantFiled: April 17, 2001Date of Patent: February 25, 2003Assignee: GE Betz, Inc.Inventors: Kristin E. Buentello, Larry M. Kye, Elizabeth Yibin Zhang, Victoria Rafalovsky, Alan M. Agree
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Publication number: 20030019053Abstract: The invention relates to a dye composition for keratin fibers, in particular for human keratin fibers such as the hair, this composition having, in a medium suitable for dyeing, at least one cationic direct dye of given formula, and containing at least one specific cationic or amphoteric substantive polymer. The invention also relates to the dyeing processes and devices using it.Type: ApplicationFiled: April 6, 1999Publication date: January 30, 2003Inventor: CHRISTINE RONDEAU
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Publication number: 20020178517Abstract: The object of the present invention is to provide organic dye compounds which exert satisfactory optical absorption properties and thermal resistance when used in high density optical recording media. The above object is solved by specific trimethine cyanine dyes, light absorbents and optical recording media which comprise the cyanine dyes, and preparations for the cyanine dyes comprising either reacting a benzoindolium compound having a compatible leaving group with a pyrazinoimidazolium compound having a reactive methyl group; or reacting a benzoindolium compound having a reactive methyl group with a pyrazinoimidazolium compound having a compatible leaving group.Type: ApplicationFiled: October 23, 2001Publication date: December 5, 2002Inventors: Chiaki Kasada, Katsumi Orita, Kentaro Yano, Toshio Kawata, Shigeo Yasui
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Patent number: 6458168Abstract: The present invention relates to the use, for dyeing keratin fibers, of at least one aliphatic cationic amine and of at least one compound chosen from an aldehyde, a ketone, a quinone and a diiminoisoindoline or 3-aminoisoindolone derivative, in order to obtain, by reaction without an oxidizing agent, a coloration of the said keratin fibers. The invention also relates to dye compositions comprising these compounds and to dyeing agents for using them.Type: GrantFiled: October 25, 2000Date of Patent: October 1, 2002Assignee: L'Oreal S.A.Inventors: Alain Lagrange, Hervé Andrean
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Patent number: 6451071Abstract: This invention relates to colorants comprising organic chromophores, in particular reactive dyes, which comprise electrophilic reactive groups, and which are also covalently bonded to fatty amine moieties through amino linking groups. Such colorants provide excellent colorability and long-term stability, both within (or on) colored substrates and upon long-term storage. Such colorants exhibit particularly good coloring and stability within hydrocarbon compositions, such as fuels, mineral oil, and the like, and wax compositions, including candles, crayons, and the like. Methods of making such colorants as well as methods of coloring hydrocarbon and wax compositions are also contemplated within this invention.Type: GrantFiled: March 28, 2000Date of Patent: September 17, 2002Assignee: Milliken & CompanyInventor: John D. Bruhnke
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Patent number: 6451067Abstract: The present invention relates to the use, for dyeing keratin fibres, of at least one heterocyclic cationic amine and of at least one compound chosen from an aldehyde, a ketone, a quinone and a diiminoisoindoline or 3-aminoisoindolone derivative, in order to obtain, by reaction without an oxidizing agent, a coloration of the said keratin fibres. The invention also relates to dye compositions comprising these compounds and to dyeing agents for using them.Type: GrantFiled: October 27, 2000Date of Patent: September 17, 2002Assignee: L'Oreal S.A.Inventors: Alain Lagrange, Hervé Andrean
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Patent number: 6440177Abstract: In the present invention there is provided a single-step process and composition of hair bleach, which can simultaneously lighten the hair up to seven levels and effectively neutralize any undesirable warmth, provide natural tones or deposit fashion shades. This is achieved by including in the bleach mixture a solution containing basic dye molecules, which in the present invention have been found to be both, stable in the bleach, and capable of depositing the desired amount of tone on the hair. The dyes fall into the class of water-soluble basic azo compounds.Type: GrantFiled: January 18, 2001Date of Patent: August 27, 2002Assignee: Artec Systems GroupInventor: Cindy L. Orr
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Patent number: 6436153Abstract: The invention relates to a direct dye composition for keratin fibers, in particular for human keratin fibers such as the hair, comprising, in a medium which is suitable for dyeing and which is free of oxidases or oxidoreductases, at least one cationic direct dye of given formula and at least one specific polyol and/or polyol ether. Subjects of the invention are also the dyeing processes and devices/kits using the said composition.Type: GrantFiled: May 28, 1999Date of Patent: August 20, 2002Assignee: L'Oréal S.A.Inventor: Christine Rondeau
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Publication number: 20020083532Abstract: Anionic coloring agents comprising at least one spacer arm bounded to their chemical structure. These anionic coloring agents have the following general formula: CA-BE, wherein, CA is an anionic coloring agent comprising at least a cromophore group; and BE is the spacer arm, which has the following chemical structure: —(X—R—Z)r, wherein X is a direct link or a group having the formula —S(O)s, wherein s is 0, 1 or 2; or —NR1—, wherein, R1 is hydrogen or a C1-C10 alkyl group; R is a C1-C10 straight or branched alkylene group: Z is a polar group; and r is an integer equal or higher than 1.Type: ApplicationFiled: December 18, 2001Publication date: July 4, 2002Inventor: Jorge Mazza
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Patent number: 6413281Abstract: 2-(p-sulphophenyl) amino-1,3 5-triazine derivatives [1] and their alkali salts, wherein R1, represents Cl, F; R2 is &agr;- or &bgr;-naphthylamino, or &agr;- or &bgr;-naphthoxy, and the method for preparing the compound are provided. The compound can be used as a cationic dye auxiliary agent in dyeing animal protein fibers (such as wool, cony hair, camel hair and natural silk) and their textile fabric as well as blended yarn or fabric containing the animal protein fiber.Type: GrantFiled: February 17, 2000Date of Patent: July 2, 2002Inventor: Zhi Wang
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Publication number: 20020046432Abstract: The invention relates to a dye composition for keratin fibers, in particular for human keratin fibers such as the hair, this composition having, in a medium suitable for dyeing, at least one cationic direct dye of given formula, and containing at least one specific cationic or amphoteric substantive polymer. The invention also relates to the dyeing processes and devices using it.Type: ApplicationFiled: April 6, 1999Publication date: April 25, 2002Inventor: CHRISTINE RONDEAU
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Patent number: 6371994Abstract: The invention relates to a dye composition for keratin fibers, in particular for human keratin fibers such as the hair, comprising at least one cationic direct dye of given formula and at least glycerol and/or one specific polyol and/or polyol ether. The invention also relates to the dyeing processes and devices using this composition.Type: GrantFiled: May 28, 1999Date of Patent: April 16, 2002Assignee: L'Oreal S.A.Inventors: Gérard Lang, Jean Cotteret
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Patent number: 6358286Abstract: The invention relates to a composition for the oxidation dyeing of keratin fibers, and in particular human keratin fibers such as the hair, having, in a medium suitable for dyeing, at least one oxidation base and at least one specific cationic dye as direct dye, as well as to the dyeing process using this composition.Type: GrantFiled: May 26, 1999Date of Patent: March 19, 2002Assignee: L'Oreal S.A.Inventors: Gérard Lang, Jean Cotteret
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Patent number: 6287348Abstract: This invention relates to colorants comprising organic chromophores, in particular reactive dyes, which comprise electrophilic reactive groups, and which are also covalently bonded to fatty amine moieties through amino linking groups. Such colorants provide excellent colorability and long-term stability, both within (or on) colored substrates and upon long-term storage. Such colorants exhibit particularly good coloring and stability within hydrocarbon compositions, such as fuels, mineral oil, and the like, and wax compositions, including candles, crayons, and the like. Methods of making such colorants as well as methods of coloring hydrocarbon and wax compositions are also contemplated within this invention.Type: GrantFiled: December 15, 1998Date of Patent: September 11, 2001Assignee: Milliken & CompanyInventor: John D. Bruhnke
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Publication number: 20010014989Abstract: The present invention provides new compounds having the formula: 1Type: ApplicationFiled: January 22, 2001Publication date: August 23, 2001Inventors: Peter Rohringer, Georges Metzger, Dieter Reinehr
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Patent number: 6277643Abstract: The present invention relates to a method for detection of protein using a counter-dye composition, on polyaciylamide gels, and the counter-dye composition for detection of protein on polyacrylamide gels. More specifically, the present invention relates to a method for detection of protein in a high sensitivity on polyacrylamide gels in a rapid and simple manner, comprising the step of staining the polyacrylamide gels with a counter-dye composition containing an acidic organic dye and a basic organic dye, and the counter-dye composition for detection of protein on polyacrylamide gels.Type: GrantFiled: July 10, 1999Date of Patent: August 21, 2001Inventors: Jung Kap Choi, Gyoung Hoon Tak, Da-Woon Jung, Gyurng Soo Yoo
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Patent number: 6255482Abstract: The triphendioxazine compounds of the general formula (I) in which the rings labelled A in positions 1,2-, 2,3- or 3,4- and 8,9-, 9,10- or 10,11- carry a linearly or angularly fused heterocyclic ring containing at least one nitrogen atom which is substituted or unsubstituted, with the proviso that compounds with only unsubstituted nitrogen atoms and symmetrically disubstituted compounds with C1-2alkyl and unsubstituted phenyl substituents are excluded, are outstanding pigments and are notable over the closest comparable pigments in particular for better migration, light and solvent fastnesses, better heat stability and enhanced colouring power and also better dispersibility and capability to be brought into pigment form. The invention also relates to a process for preparing these triphendioxazine compounds which is characterized by a cyclization step conducted in the presence of manganese dioxide and concentrated sulphuric acid.Type: GrantFiled: October 19, 1998Date of Patent: July 3, 2001Assignee: Clariant Finance (BVI) LimitedInventors: Patrick Boeglin, Bansi Lal Kaul, Peter Kempter
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Patent number: 6241785Abstract: The invention concerns the use of flavylium type compounds, non-substituted in position 3, and substituted by at least a hydroxyl or alcoxy radical, in particular Apigenidin, in pure form or in the form of plant extracts containing them, as coloring agent in or for making compositions for dyeing keratinous fibers, particularly human keratinous fibers such as hair. The invention also concerns the dyeing compositions containing them, particularly cosmetic compositions for direct hair dyeing, and the corresponding dyeing method. The hair dyes resulting from the use of these coloring agents are particularly stable to light and washing.Type: GrantFiled: August 20, 1999Date of Patent: June 5, 2001Assignee: L'OrealInventors: Patrick Darmenton, Michel Philippe
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Patent number: 6241788Abstract: Stabilized metachromatic dyes, especially at application concentrations, comprising metachromatic dyes dissolved in one or more non-aqueous solvents, as well as metachromatic dyes dissolved in pH stabilized aqueous solutions. Also, various combinations of treatments are disclosed for stabilizing metachromatic dyes.Type: GrantFiled: November 16, 1999Date of Patent: June 5, 2001Assignee: BetzDearborn Inc.Inventors: Kristin E. Buentello, Larry M. Kye, Elizabeth Yibin Zhang, Victoria Rafalovsky, Alan M. Agree
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Patent number: 6221113Abstract: A liquid dyestuff composition comprising from 4 to 50 wt % of a basic or cationic water soluble dyestuff, an organic or inorganic acid and 0.1 to 15.0 wt % of a phenolic derivative, the dyestuff having a solubility in water in the presence or absence of a phenolic derivative of at least 1 g/liter at a temperature of 25° C. and the composition being made up to 100 wt % by water and optionally a water-miscible solvent and/or a dissolving auxiliary; a process of dyeing a substrate like paper with such composition; a powder or granulate form of such composition and the use of such a composition or powder or granulate thereof in a dyeing process.Type: GrantFiled: January 13, 1998Date of Patent: April 24, 2001Assignee: Clariant Finance (BVI) LimitedInventor: Jürgen Geiwiz
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Patent number: 6152969Abstract: The present invention relates to the development of a coloring matter which has a moderately bluish magenta color and an excellent lightfastness and can provide a wide range of color tones in the visible range when used together with yellow and cyan inks. A water-base ink composition or the like is prepared by using a sulfonic acid derivative of an anthrapyridone compound represented by general formula (I) as a magenta dye, wherein R.sub.1 ' represents alkoxycarbonyl, carbonyl or benzoyl; R.sub.2 represents hydrogen or alkyl; and R.sub.3 and R.sub.4 represent each independently hydrogen, halogeno, alkyl or alkoxy.Type: GrantFiled: February 3, 1999Date of Patent: November 28, 2000Assignee: Nippon Kayaku Kabushiki KaishaInventors: Hiroyuki Matsumoto, Yasuo Shirasaki, Katsunori Fujii
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Patent number: 6121452Abstract: The present invention relates to a process for preparing compounds of formula (I) ##STR1## wherein A completes an unsubstituted or substituted heteroaromatic ring andB completes an unsubstituted or substituted aromatic ring, by reacting a heterocyclic compound of formula (II) ##STR2## wherein A completes an unsubstituted or substituted heteroaromatic ring, with an aromatic dicarboxylic acid of formula (III) ##STR3## or an anhydride thereof, wherein B completes an unsubstituted or substituted aromatic ring, in an organic solvent in the presence of an aliphatic or aromatic alcohol that is different from both the organic solvent and compounds (I), (II), and (III).Type: GrantFiled: August 28, 1997Date of Patent: September 19, 2000Assignee: Bayer AktiengesellschaftInventors: Dietmar Kalz, Stephan Michaelis, Karl-Heinz Reinhardt
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Patent number: 6045591Abstract: The invention relates to a process for the two-step direct dyeing of keratin fibres, comprising bleaching the keratin fibres; and applying to the keratin fibres a dye composition comprising at least one partially dissolved basic direct dye and an aqueous medium, wherein the dye composition is ready to use or results from mixing, at the time of use, at least one pulverulent composition (P) comprising at least one basic direct dye and an aqueous composition (A).Type: GrantFiled: December 7, 1998Date of Patent: April 4, 2000Assignee: L'OrealInventor: Christelle Deneulenaere
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Patent number: 5944856Abstract: A liquid dyestuff composition comprising from 4 to 50 wt % of a basic or cationic water soluble dyestuff, an organic or inorganic acid and 0.1 to 15.0 wt % of a phenolic derivative, the dyestuff having a solubility in water in the presence or absence of a phenolic derivative of at least 1 g/liter at a temperature of 25.degree. C. and the composition being made up to 100 wt % by water and optionally a water-miscible solvent and/or a dissolving auxiliary; a process of dyeing a substrate like paper with such composition; a powder or granulate form of such composition and the use of such a composition or powder or granulate thereof in a dyeing process.Type: GrantFiled: January 13, 1998Date of Patent: August 31, 1999Assignee: Clariant Finanace (BVI) LimitedInventor: Jurgen Geiwiz
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Patent number: 5929215Abstract: Compounds of Formula I ##STR1## wherein the substituents are as defined in the description, a process of manufacture thereof and a process of dyeing employing said compounds.Type: GrantFiled: July 7, 1998Date of Patent: July 27, 1999Assignee: Clariant Finance (BVI) LimitedInventor: Reinhard Pedrazzi
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Patent number: 5904739Abstract: Storage-stable liquid brightener formulations essentially comprise a basic optical brightener, an aprotic polar organic solvent and an acid.Type: GrantFiled: August 26, 1996Date of Patent: May 18, 1999Assignee: Hoechst AktiengesellschaftInventors: Thomas Martini, Petra Rothe
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Patent number: 5891200Abstract: Anthraquinone compounds of formula I ##STR1## wherein R.sub.1 and R.sub.2 are methyl and R.sub.3 is propyl, or R.sub.1 and R.sub.2 are ethyl and R.sub.3 is methyl and A is a cosmetically acceptable anion, are combined neutral, with semipermanent direct dyes in hair dyeing compositions.Type: GrantFiled: February 26, 1996Date of Patent: April 6, 1999Inventors: Mu-Ill Lim, Linas Stasaitis, Yuo-Guo Pan
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Patent number: 5827330Abstract: Water soluble, cationic products useful as hair colorants or for the treatment of skin which are esters or amides formed by reaction of melanin and a quaternary salt containing a reactive amino or hydroxyl group, as well as compositions containing them and methods of using such products to color hair or treat skin are described.Type: GrantFiled: June 13, 1997Date of Patent: October 27, 1998Assignee: Bristol-Myers Squibb Co.Inventors: Gottfried Wenke, Giuseppe Prota
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Patent number: 5811040Abstract: The specification describes a process of making a fiber for a carpet face yarn, the yarn being made of polyolefin/polymer filaments which contain a plurality of longitudinally dispersed relatively small, short polymer fibrils inside the filaments generally concentrated toward the center thereof within the polyolefm matrix. The yarn has the stain resistant properties of polyolefm based yarns and the resiliency of polyamide based yarns at a substantially lower cost than nylon carpet yarns.Type: GrantFiled: January 24, 1997Date of Patent: September 22, 1998Inventor: William C. Mallonee
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Patent number: 5766268Abstract: A colorant composition which can be liquid in the neat form at 25.degree. C., having the structure ABXYZ, whereA is an organic chromophore;B is an electrophilic reactive group covalently bonded to A directly or through a linking group;X is a nucleophilic linking group covalently bonding B and Y;Y is a poly(oxyalkylene)-containing moiety comprising the formula (C.sub.a H.sub.2a O).sub.m (C.sub.b H.sub.2b O).sub.n where a and b are different and from 1 to 8, m is at least 3, n is 0 to 15; andZ is a terminal group for Y.The colorant composition can be prepared from a reactive dye AB which is reacted with XYZ, a poly(oxyalkylene)-containing moiety containing a nucleophilic group.Type: GrantFiled: March 13, 1997Date of Patent: June 16, 1998Assignee: Milliken Research CorporationInventor: John D. Bruhnke
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Patent number: 5746779Abstract: Quaternized blue anthraquinone compounds of Formula I ##STR1## wherein R.sub.1 and R.sub.2 are methyl and R.sub.3 is propyl, or R.sub.1 and R.sub.2 are ethyl and R.sub.3 is methyl and A.sup.- is a cosmetically acceptable anion, when employed in an isatin/amine dye system for the dyeing of hair enable the hair colorist to develop a full range of shades for the isatin/amine dye system. The compound of Formula I wherein R1 and R2 are methyl and R3 is propyl is preferred. Compositions and a method of use employing same are disclosed.Type: GrantFiled: July 12, 1996Date of Patent: May 5, 1998Assignee: Bristol-Myers Squibb CompanyInventor: Keith Brown
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Patent number: 5746778Abstract: A wood stain which is water-based, which is suitable for staining wood, and which is comprised of water; at least one dye selected from the group consisting of azo, diazo and triarylmethane dyes; and a stabilizing agent which is effective to reduce free iron ion concentration in the stain when in contact with an autoclave composed of non-rust resistant steel during the staining process. The stabilizing agent includes at least one buffer effective to maintain the pH of the wood stain at greater than 7.0. Alternatively or additionally, the stabilizing agent includes at least one complexing agent which forms a complex with iron ions.Type: GrantFiled: May 23, 1996Date of Patent: May 5, 1998Assignee: A.W. Faber-Castell Unternehmensverwaltung GmbH & Co.Inventors: Axel Jankewitz, Gerhard Lugert
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Patent number: 5733343Abstract: Keratin-containing fibres, in particular human hair, are dyed using dyes of formulae (1) to (6) indicated in claim 1. These dyes make it possible to dye by the trichromatic principle even in dark shades.Type: GrantFiled: November 26, 1996Date of Patent: March 31, 1998Assignee: Ciba Specialty Chemicals CorporationInventor: Peter Mockli
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Patent number: 5725607Abstract: There has been found1) a method for reducing the toxicity of spent liquors from dyeing with cationic dyes or mixtures thereof, characterized by the step of dyeing with cationic dyes having a computed electrostatic shielding energy (idealized hydration energy) of .gtoreq.50 kcal/mol,2) cationic, generally low toxicity dyes, their preparation and use for dyeing.Type: GrantFiled: June 25, 1996Date of Patent: March 10, 1998Assignee: Bayer AktiengesellschaftInventors: Henry Giera, Felix Reichel, Horst Berneth, Thomas Bocker, Karin Hassenruck, Karl Lange, Karlheinrich Meisel
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Patent number: 5711765Abstract: A process for the direct dyeing of keratin fibers, characterized in that it comprises in placing keratin fibers, to which a dye composition containing at least one cationic direct dye has been applied, in contact with a gas containing water vapor, the temperature of the gas preferably being above 75.degree. C., the contact time between the gas and the fibers to be dyed preferably not exceeding two minutes. According to the invention, the hair is dyed uniformly, from the roots to the tips, regardless of the state of the hair.Type: GrantFiled: September 30, 1996Date of Patent: January 27, 1998Assignee: L'OrealInventor: Marie-Pascale Audousset
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Patent number: 5651794Abstract: Dyed cellulosic regenerated elongate members such as fibers are produced by dyeing the regenerated members with a cationic direct dye after formation but before first drying. A method of producing the dyed elongate members comprises forming a dope containing cellulose or a cellulose compound in solution in a solvent, extruding the dope through at least one orifice into a bath containing water to form an elongate extrudate from which solvent is dissolved and/or the cellulose compound is converted to cellulose so as to form the elongate member, dyeing the formed but never dried elongate member with a cationic direct dye and optionally also with an anionic direct dye and then drying for the first time the dyed elongate member.Type: GrantFiled: October 15, 1993Date of Patent: July 29, 1997Assignee: Courtaulds PlcInventor: James Martin Taylor
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Patent number: 5587118Abstract: The specification describes a conjugate carpet face yarn including trilobal or delta cross-section polyolefin filaments and a plurality of generally co-linear smaller polyamide fibrils embedded within the polyolefin filaments. This yarn has the stain resistant properties of polyolefin based yarns and the resiliency of polyamide based yarns.Type: GrantFiled: March 14, 1995Date of Patent: December 24, 1996Inventor: William C. Mallonee
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Patent number: 5582621Abstract: Bulk dyeing of plastics using dyestuffs of the formula (I) ##STR1## wherein n denotes 1 or 2, preferably 1,R.sub.o for n=1, denotes aryl, hetaryl or heterocyclylidenemethyl, or for n=2, denotes a direct bond or arylene andthe ring A is unsubstituted or substituted by C.sub.1 -C.sub.4 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, C.sub.6 -C.sub.10 -aryl, C.sub.1 -C.sub.4 -alkyloxy, C.sub.6 -C.sub.10 -aryloxy, C.sub.6 -C.sub.10 -aryl- or C.sub.1 -C.sub.4 -alkylsulphonyl, cyano, halogen, in particular chlorine or bromine, or a radical of the formula --COR.sub.1, wherein R.sub.1 represents C.sub.1 -C.sub.4 -alkoxy, amino, C.sub.1 -C.sub.4 -alkylamino, di-C.sub.1 -C.sub.4 -alkylamino, C.sub.6 -C.sub.10 -arylamino, C.sub.1 -C.sub.4 -alkyl or C.sub.6 -C.sub.10 -aryl, or contains a fused-on aromatic or cycloaliphatic ring,the plastics used being, in particular, thermoplastics, preferably vinyl polymers, polyesters or polyamides.Type: GrantFiled: September 13, 1995Date of Patent: December 10, 1996Assignee: Bayer AktiengesellschaftInventors: Peter Roschger, Stephan Michaelis, Hauke Furstenwerth
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Patent number: 5567206Abstract: A wood stain which is water-based, which is suitable for staining wood, and which is comprised of water; at least one dye selected from the group, consisting of azo, diazo and triarylmethane dyes; and a stabilizing agent which is effective to reduce free iron ion concentration in the stain when in contact with an autioclave composed of non-rust resistant steel during the staining process. The stabilizing agent includes at least one buffer effective to maintain the pH of the wood stain at greater than 7.0. Alternatively or additionally, the stabilizing agent includes at least one complexing agent which forms a complex with iron ions. A method for staining wood includes placing the wood into an autoclave composed of non-rust-resistant steel; submerging the wood in the wood stain; and staining the wood under pressure and temperature conditions effective therefor.Type: GrantFiled: July 31, 1995Date of Patent: October 22, 1996Assignee: A.W. Faber-Castell Unternehmensverwaltung GmbH & Co.Inventors: Axel Jankewitz, Gerhard Lugert
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Patent number: 5530130Abstract: Phthaloperinone dyestuffs of the general formula (I) ##STR1## wherein Z denotes SO.sub.2 or CO,A represents optionally substituted alkyl or aryl,and the other substituents have the meanings given in the description, are prepared by condensation of corresponding phthalic acids or functional derivatives thereof and optionally substituted 1,8-naphthalene-diamines.The dyestuffs according to the invention have very good fastnesses and are employed in processes for bulk dyeing plastics.Type: GrantFiled: August 12, 1994Date of Patent: June 25, 1996Assignee: Bayer AktiengesellschaftInventors: Peter Roschger, Volker Hederich, Stephan Michaelis
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Patent number: 5520707Abstract: Anthraquinone compounds of formula I ##STR1## wherein R.sub.1 and R.sub.2 are methyl and R.sub.3 is propyl, or R.sub.1 and R.sub.2 are ethyl and R.sub.3 is methyl and A.sup.- is a cosmetically acceptable anion, are useful for the dyeing of hair. Compounds of formula I may advantageously be employed with direct dyes. Compositions and a method of use employing same are disclosed.Type: GrantFiled: August 7, 1995Date of Patent: May 28, 1996Assignee: Clairol, Inc.Inventors: Mu-Ill Lim, Linas Stasaitis, Yuo-Guo Pan
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Patent number: 5516338Abstract: An aqueous dye composition is based upon a mixture of a water-soluble titanium salt, preferably titanium potassium oxalate and a tannin substance, preferably Myrobalan extract. This dye composition may be used to dye either natural fibers, synthetic fibers or blends thereof. The composition is particularly advantageous for either bottom dyeing denim fabric which can then be overdyed with indigo blue dye to provide blue-green hues or as a mordant for a basic dye.Type: GrantFiled: January 25, 1995Date of Patent: May 14, 1996Inventor: Panemangalore S. Pai
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Patent number: 5493011Abstract: Water-insoluble azo colorants, their preparation and use The invention relates to monoazo and disazo compounds of the formula (I) ##STR1## in which D is the radical of a carbocyclic or heterocyclic diazo or bisdiazo component, R.sup.1 and R.sup.2, independently of one another, are each a substituted or unsubstituted aryl or heteroaryl radical, X.sup.1 and X.sup.2, independently of one another, are each ring-forming ether oxygen or a substituted or unsubstituted imide grouping and n has the value 0 or 1, in which rings A and B, independently of one another, can each be additionally substituted and/or carry substituted or unsubstituted fused rings.These new compounds of the formula (I) are obtained by coupling diazotized amines or diamines of the type D--NH.sub.2 or H.sub.2 N--D--NH.sub.2 with (benzoxazol-2-yl)- or (benzimidazol-2-yl)-arylacetamides.Depending on the presence and length of alkyl chains, the compounds of the formula (I) are suitable for use as pigments, disperse dyes or oil-soluble dyes.Type: GrantFiled: November 6, 1992Date of Patent: February 20, 1996Assignee: Hoechst AGInventors: Rudiger Jung, Reinhold Deubel
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Patent number: 5474578Abstract: A hair fiber having a first color is contacted with a dye having the formula I, formula II, formula III or a mixture thereof whereby the fiber has imparted to it a second color, upon subsequent contact with alkaline peroxide the visual appearance of the first color is restored to the fiber.Type: GrantFiled: October 3, 1994Date of Patent: December 12, 1995Assignee: Clairol, Inc.Inventors: Alexander C. Chan, Alice A. Mayer, Jia-Shen Wang, Gottfried Wenke, Mu-Ill Lim
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Patent number: 5468848Abstract: The new basic azo dyestuffs of the formula ##STR1## wherein the symbols have the meaning given in the description, are suitable for dyeing synthetic and naturally occurring substrates which can be dyed with basic dyestuffs.Type: GrantFiled: June 21, 1994Date of Patent: November 21, 1995Assignee: Bayer AktiengesellschaftInventors: Karin Hassenruck, Peter Wild