Quinacridone Pigment Or Derivative Patents (Class 106/495)
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Patent number: 6506245Abstract: Colored pigments having one or more desired parameters and/or properties are described. These parameters and/or properties include: a) a particles size of from about 10 nm to about 300 nm; b) an accusizer number of less than 1010 particles/ml of dispersion at 15% solids which are greater than 0.5 micron; c) a filterability such that when in a liquid medium, 100 ml having 10% solids of the colored pigment filters through a 3 micron nylon absolute filter; d) a colored pigment purity of greater than about 80%, based on extractable material; and/or e) a stability such that the above-described properties do not change by more than 50% at 25 degrees C for at least one week. Colored pigments having at least one organic group and having one or more of the above-described characteristics is also described as well as a process for preparing surface-modified colored pigments.Type: GrantFiled: October 27, 2000Date of Patent: January 14, 2003Assignee: Cabot CorporationInventors: Thomas A. Kinney, Friedrich K. von Gottberg, Yuan Yu, John F. Welch
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Patent number: 6503317Abstract: Aqueous based pigment dispersions wherein the pigment is dispersed in a dispersant dye in the absence of any other dispersant or additive and aqueous based printing ink compositions containing these a pigment dispersions. Methods for preparing aqueous based pigment dispersions, wherein the pigment is dispersed in a dispersant dye, and method for preparing printing ink compositions incorporating these dispersions.Type: GrantFiled: November 20, 2000Date of Patent: January 7, 2003Assignee: Sun Chemical CorporationInventors: Darren Mark Ortalano, Christopher Joseph Vissing
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Patent number: 6494947Abstract: The invention relates to crimson-colored pigment mixtures comprising 1,4-diketo-2,5-dihydro-3,6-diarylpyrrolo[3,4c]pyrrole and quinacridone pigments in separate crystalline phases, having a high tinctorial strength combined with other excellent application properties. The pigments according to the invention can be used in printing inks, especially in printing inks for polychromatic printed products. A substantial constituent of the pigment mixtures according to the invention is 1,4-diketo-2,5-dihydro-3,6-di(4′-chlorophenyl)pyrrolo[3,4c]pyrrole or 2,9-dichloroquinacridone, which are subjected to kneading with a crystalline inorganic salt and a neutral organic liquid. The invention also relates to a process for the preparation of such pigment compositions, the use thereof in the production of printing inks, and such printing inks themselves.Type: GrantFiled: September 19, 2001Date of Patent: December 17, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Hanspeter Hauser, Yves Grandidier, Klaus Ruf
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Patent number: 6494943Abstract: Colored pigments having one or more desired parameters and/or properties are described. These parameters and/or properties include: a) a particles size of from about 10 nm to about 300 nm; b) an accusizer number of less than 1010 particles/ml of dispersion at 15% solids which are greater than 0.5 micron; c) a filterability such that when in a liquid medium, 100 ml having 10% solids of the colored pigment filters through a 3 micron nylon absolute filter; d) a colored pigment purity of greater than about 80%, based on extractable material; and/or e) a stability such that the above-described properties do not change by more than 50% at 25 degrees C. for at least one week. Colored pigments having at least one organic group and having one or more of the above-described characteristics is also described as well as a process for preparing surface-modified colored pigments.Type: GrantFiled: October 27, 2000Date of Patent: December 17, 2002Assignee: Cabot CorporationInventors: Yuan Yu, Friedrich K. von Gottberg, Robert M. Amici, Paul S. Palumbo
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Patent number: 6494948Abstract: This invention relates to a process for preparing quinacridone pigment compositions by (a) heating a reaction mixture containing (i) 2,5-dianilinoterephthalic acid or 2,5-dianilino-6,13-dihydroterephthalic acid or a derivative thereof, (ii) about 0.1 to about 5 percent, based on component (a)(i), of 2,5-di(sulfamoylanilino)terephthalic acid and/or 2,5-di(sulfamoylanilino)-6,13-dihydroterephthalic acid or a derivative thereof, (iii) about 0.1 to about 15 percent by weight, based on component (a)(i), of other sulfonyl-containing derivatives of 2,5-dianilinoterephthalic acid and/or 2,5-dianilino-6,13-dihydroterephthalic acid, (iv) about 3 to about 20 parts by weight, per part of component (a)(i), of a dehydrating agent, and (v) optionally, a solvent; (b) drowning the reaction mixture from step (a) with a liquid in which the quinacridone pigment composition is substantially insoluble; and (c) isolating the quinacridone pigment composition.Type: GrantFiled: December 22, 2000Date of Patent: December 17, 2002Assignee: Bayer CorporationInventors: Daphne J. Rice, Ibraheem T. Badejo
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Patent number: 6488760Abstract: A universal tinting concentrate for both solvent- and water-based paints and coatings. The universal tinting concentrate is a composition which includes a colorant component, such as pigment, colorant, tinting agent and/or metal effect agent; a pigment dispersant including a moiety selected from the group consisting of an organic acid, anhydride, salt thereof, and derivative thereof, wherein the dispersant facilitates the dispersal of the colorant component in organic-based and aqueous-based vehicles; and a pH-neutralizing agent. In one embodiment of the invention, the pigment dispersant is represented by the following structure: where r and s are integers and r+s is 6 to 16; x and y are integers and x+y is 0 to 19; Z is H or COOH; and Z′ is H or COOH.Type: GrantFiled: August 31, 2000Date of Patent: December 3, 2002Assignee: The Valspar CorporationInventors: Mark Binns, Dana L. Phillips, Don Diehl, Stephen Korenkiewicz, Larry Brandenburger
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Patent number: 6478866Abstract: Aqueous pigment preparations containing a) at least one pigment, b) at least one condensation product based on A) suphonated aromatics, B) aldehydes and/or ketones and optionally C) one or several compounds selected from the group of non sulphonated aromatics, urea and urea derivatives, and c) at least one polyether polyol with a boiling point of above 150° C., at normal pressure. The inventive preparations are highly suitable for pigmenting natural or synthetic materials.Type: GrantFiled: August 14, 2000Date of Patent: November 12, 2002Assignee: Bayer AktiengesellschaftInventors: Peter Roger Nyssen, Wolfgang Zarges, Achim Brand, Thomas Roick, Hans Peter Geiger
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Patent number: 6471764Abstract: An etheramine pigment dispersing salt for enhancing the dispersion performance of an organic pigment composition adding to 100 parts by weight of pigment about 1 to 40 parts by weight of an etheramine pigment dispersing salt.Type: GrantFiled: November 16, 2000Date of Patent: October 29, 2002Assignee: Sun Chemical CorporationInventors: George H. Robertson, Kevin A. Arthur, Russell J. Schwartz, Stanislav Vilner, George McLaren
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Patent number: 6471765Abstract: The present invention relates to compositions comprising a sulfonated diketopyrrolopyrrole and a Mannich-type substituted dihydroquinacridone to produce colored materials having improved stability at high temperatures. The instant compositions can be used for pigmenting polymeric materials, such as color filters.Type: GrantFiled: July 27, 2001Date of Patent: October 29, 2002Assignee: Ciba Specialty Chemicals CorporationInventor: Gerardus De Keyzer
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Patent number: 6468341Abstract: A pigment composition comprises a wet-ground pigment mixture of (A) &egr;-copper phthalocyanine and (B) at least one pigment selected from a group consisting of condensed polycyclic pigments and azo pigments. The weight ratio of thecomponent (A) to the component (B) is 100:0.1 to 100:50. The pigment composition can be produced by wet-grinding (A-1) &agr;-copper phthalocyanine and the component (B) at a weight ratio of from 100:0.1 to 100:50 in a non-aromatic solvent. A colorant comprises the pigment composition and at least one component selected from the group consisting of film-forming resins and liquid media. A colored article can be obtained using the colorant as a coloring agent.Type: GrantFiled: February 2, 2001Date of Patent: October 22, 2002Assignee: Dainichiseika Color & ChemicalsInventors: Nobuto Wada, Kazutaka Aoki, Yutaka Nakagawa, Shotoku Takami, Michiei Nakamura
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Patent number: 6451103Abstract: There is disclosed a self-dispersible aqueous pigment dispersion and preparing method thereof, the dispersion comprising an aqueous solution, particles of a pigment and a water-soluble pigment derivative, said particles being dispersed in the aqueous pigment dispersion in a concentration within the range from 2 to 25 wt. % based on the amount of the aqueous pigment dispersion, wherein a part of the water-soluble pigment derivative is adsorbed on the surface of the particles of the pigment to form dispersed particles comprising the particles of the pigment adsorbed by said part of the pigment derivative, and the remaining parts of the water-soluble pigment derivative are free in the dispersion without being adsorbed on the surface of the pigment in a concentration less than the critical flocculation concentration on which flocculation is initiated on said particles of the pigment dispersed under said concentration.Type: GrantFiled: September 22, 2000Date of Patent: September 17, 2002Assignee: Toyo Ink Mfg. Co., Ltd.Inventors: Toshiyuki Uemura, Tsukasa Iguchi, Mikiya Kato, Akimitsu Mochizuki
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Patent number: 6440207Abstract: This invention relates to a process for preparing dispersible organic pigments by (a) milling a mixture containing (1) one or more organic pigments, (2) at least about 1% by weight, relative to the organic pigment, of one or more aromatic polyalkylene oxide dispersants, (3) 0 to about 10 parts by weight, relative to the organic pigment, of a milling liquid in which the organic pigment is substantially insoluble, (4) 0 to about 50% by weight, relative to the organic pigment, of one or more milling additives other than dispersant (2), and (5) 0 to about 20% by weight, relative to the organic pigment, of one or more surface treatment additives; (b) optionally, adding to the milled pigment (6) one or more liquids in which the organic pigment is substantially insoluble in amounts such that the total solids content is not reduced below about 10%, and (7) one or more multivalent metal salts and/or one or more quaternary ammonium salt; and (c) isolating the milled organic pigmentType: GrantFiled: March 3, 2000Date of Patent: August 27, 2002Assignee: Bayer CorporationInventor: Gregory R. Schulz
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Patent number: 6436182Abstract: The invention relates to an advantageous process for producing highly concentrated pigment presscakes which comprises concentrating a pigment suspension on a high-pressure filter press with a pressure of at least 16 bar to a pigment content of at least 50% by weight without adding nonionic surfactants which have a cloud point in water.Type: GrantFiled: July 7, 2000Date of Patent: August 20, 2002Assignee: Clariant GmbHInventors: Leonhard Unverdorben, Uwe Nickel, Andreas Harz, Gunnar Tilch
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Patent number: 6423132Abstract: The present invention is drawn to pigment granules having a particle size from 0.5 to 4 mm, which consist of at least 90% by weight of at least one organic pigment selected from the group consisting of diketopyrrolopyrrole, quinacridone, perylene, indanthrone, flavanthrone, isoindolinone or amino- anthraquinone pigments and from 0 to 10% by weight of a binder having from 2 to 7 mol of carboxyl groups per 1000 g and from 0 to 5% by weight of a neutral emulsifier. The binder and the emulsifier together do not represent more than 10% by weight of the oveerall amount of pigment granules. The pigment present in the pigment granules has a particle size of from 0.01 to &mgr;m.Type: GrantFiled: February 15, 2001Date of Patent: July 23, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Paolo Balliello, Horst Olaf Brücker
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Patent number: 6413309Abstract: Pigment preparations comprising a) at least one organic base pigment, b1) at least one perylene pigment dispersant of the formula (I) and b2) at least one acidic, carboxyl- or sulfo-containing perylene pigment dispersant have advantageous rheological and coloristic properties.Type: GrantFiled: January 25, 2000Date of Patent: July 2, 2002Assignee: Clariant GmbHInventors: Joachim Weber, Manfred Urban, Manfred Opravil, Erwin Dietz
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Patent number: 6409816Abstract: Pigment preparations comprise a) at least one diketopyrrolopyrrole pigment, and b) at least one perylene pigment dispersant of the formula (I) and have advantageous rheological and coloristic properties.Type: GrantFiled: February 16, 2000Date of Patent: June 25, 2002Assignee: Clariant GmbHInventors: Joachim Weber, Erwin Dietz
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Patent number: 6410619Abstract: This invention relates to a process for preparing conditioned organic pigments by (a) milling a mixture comprising: (1) one or more crude organic pigments; (2) at least about 0.1% by weight, relative to the organic pigment, of one or more acrylic copolymer dispersants; and (3) 0 to about 100 parts by weight, relative to the organic pigment, of a milling liquid in which the organic pigment is substantially insoluble; and (b) isolating the milled organic pigment.Type: GrantFiled: November 22, 1999Date of Patent: June 25, 2002Assignees: Bayer Corporation, E.I. DuPont De Nemours and CompanyInventors: Michael J. Greene, Patrick F. McIntyre, James G. King, Gregory R. Schulz, Karyn B. Visscher
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Patent number: 6406533Abstract: A 6,13-dihydroquinacridone derivative of formula I: (MO3S)m—Q—[CH2—(X)—(Y)n]o (I) wherein: Q represents a 6,13-dihydroquinacridone moiety of formula II; A and B each independently represent a substituent selected from H, F, Cl, C1-C3alkyl and C1-C3alkoxy M represents a metal cation, quaternary N cation or H; X is an aromatic group, a cyclo-hetero aliphatic group with at least one 5 or 6 atom ring or a hetero aromatic group with at least one 5 or 6 atom ring and which is not a phthalimido group; Y is a sulfonic or carboxylic acid or salt thereof; m and n independently from each other are numbers from zero to 2.5; and o is a number from zero to 4, wherein m and o are not zero simultaneously.Type: GrantFiled: March 7, 2001Date of Patent: June 18, 2002Assignee: Ciba Specialty Chemicals CorporationInventor: Fridolin Bäbler
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Patent number: 6398858Abstract: The present invention relates to a process for preparing surface-modified colored pigments. The process includes the steps of: preparing a reaction batch comprising a treating agent and a diazotizing agent; adding a colored pigment to the batch; and mixing the colored pigment and the batch under high shear conditions to form a reaction product comprising a surface-modified colored pigment. The treating agent has an organic group which comprises at least one diazotizable group. In a preferred embodiment the diazotizable group comprises a) at least one aromatic group or at least one C1-C20 alkyl group, and b) at least one ionic group, ionizable group, nonionic group, or a mixture thereof. The surface-modified colored pigments prepared by the process of the present invention have been found useful in aqueous or solvent based compositions and particularly in ink jet ink compositions.Type: GrantFiled: March 3, 2000Date of Patent: June 4, 2002Assignee: Cabot CorporationInventors: Yuan Yu, Ronald J. Gambale, Robert M. Amici
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Patent number: 6379451Abstract: There are disclosed a pigment composition comprising a dry-milled pigment, a water-soluble resin, and a nonionic surfactant composed of a compound having an acetylenic linkage; and a method for producing a pigment composition, comprising dry-milling a pigment containing coarse particles in the presence of a water-soluble resin and a nonionic surfactant composed of a compound having an acetylenic linkage. The production method is also possible in the form of comprising (a) dry-milling a pigment containing coarse particles in the presence of a nonionic surfactant composed of a compound having an acetylenic linkage thereby obtaining an intermediate milled product, and (b) further dry-milling a mixture of the intermediate milled product and a water-soluble resin.Type: GrantFiled: April 4, 2000Date of Patent: April 30, 2002Assignee: Toyo Ink Mfg. Co., Ltd.Inventors: Kenji Kitamura, Ataru Chiba
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Patent number: 6375732Abstract: Hybrid pigments of diketopyrrolo[3,4-c]pyrrole pigments and pigments bearing “acid” hydrogens like —NH, —OH or —CONH— groups, a process for the manufacturing of the hybrid diketopyrrolo[3,4-c]pyrrole pigments with pigments bearing “acid” hydrogens like —NH, — OH or —CONH— groups and their use as a pigment.Type: GrantFiled: March 30, 2000Date of Patent: April 23, 2002Assignee: Clariant Finance (BVI) LimitedInventors: Bansi Lal Kaul, Bruno Piastra, Valérie Wolf
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Patent number: 6361594Abstract: A process is disclosed for the direct preparation of pigmentary 1,4-diketopyrrolo-[3,4-c]pyrroles of the formula (I) wherein each of R1 and R2 independently of the other is an isocyclic or heterocyclic aromatic radical, which process comprises heating an appropriate molar ratio of a disuccinate with a nitrile of the formula (II) R1—CN (II) or of the formula (III) R2—CN (III) or with mixtures of said nitrites, in an organic solvent and in the presence of a strong base and an effective amount of a selected particle growth inhibitor of formula (IV)-(X), and then obtaining the compound of formula (I) from the reaction product by protolysis. The process yields pigmentary 1,4-diketopyrrolo-[3,4-c]pyrroles directly, i.e., without the need for additional particle-size reducing aftertreatments. Also disclosed is a composition comprising a pigmentary 1,4-diketopyrrolo-[3,4-c]pyrrole and the particle growth inhibitor.Type: GrantFiled: February 14, 2000Date of Patent: March 26, 2002Assignee: Ciba Specialty Chemicals CorporationInventor: Shivakumar B. Hendi
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Patent number: 6336966Abstract: A pigment dispersion comprising pigment, an aqueous carrier selected from water and a mixture of water and at least one organic solvent, and a pigment dispersant is described. The pigment dispersant has core and arm star-type architecture, and is prepared by controlled radical polymerization, e.g., atom transfer radical polymerization, using (i) arm-core, (ii) arm-core-arm, (iii) core-arm, or (iv) concurrent core and arm methods. The arms of the pigment dispersant each have hydrophobic and hydrophilic polymeric chain segments.Type: GrantFiled: December 16, 1999Date of Patent: January 8, 2002Assignee: PPG Industries Ohio, Inc.Inventors: Simion Coca, James B. O'Dwyer
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Patent number: 6334893Abstract: The present invention relates to pigment mixtures containing at least two components component A being Al2O3 flakes coated with one or more metals, metal oxides and/or metal sulfides and component B being acicular or spherical colorants, and to their use in particular in varnishes, paints, printing inks, powder coating materials, plastics and cosmetic formulations.Type: GrantFiled: December 23, 1999Date of Patent: January 1, 2002Assignee: Merck Patent Gesellschaft mit Beschrankter HaftungInventors: Gerhard Pfaff, Sabine Schoen, Kaiman Shimizu
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Patent number: 6312512Abstract: The invention relates to novel quinacridone mixed crystal pigments consisting of a) from 82.5 to 99% by weight of unsubstituted &ggr;-phase quinacridone of the formula (I) in which R1 and R2 are hydrogen atoms and b) from 1 to 17.5% by weight of one or more 2,9- and/or 3,10-substituted quinacridones of the formula (I) in which the substituents R1 and R2 are identical or different and are chlorine, bromine or fluorine atoms or C1-C4-alkyl, C1-C4-alkoxy or carboxamido groups which can be substituted by C1-C6-alkyl groups, and R1 can additionally be a hydrogen atom, and to pigment preparations comprising said quinacridone mixed crystal pigments.Type: GrantFiled: January 12, 2000Date of Patent: November 6, 2001Assignee: Clariant GmbHInventors: Manfred Urban, Martin Boehmer, Joachim Weber, Dieter Schnaitmann, Margit Haberlick
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Patent number: 6313300Abstract: A process for preparing an unsubstituted or substituted quinacridone of the formula or a solid solution of quinacridones of the formula (I), wherein X and Y are independently 1 or 2 substituents selected from hydrogen, fluorine, chlorine, C1-C3alkyl, C1-C3alkoxy and COOR wherein R is hydrogen or C1-C10alkyl in which a salt of a corresponding 6,13-dihydroquinacridone of formula II having the same substitutions as the desired quinacridone of formula I, or a mixture of corresponding 6,13-dihydroquinacridones of formula II, is oxidized with an oxygen containing gas in the presence of an aqueous base and a catalytically effective amount of an oxidation catalyst, characterized in that the oxidation is performed in the presence of an polyglycolic reaction medium of formula R1—O—[(CH2)m—(CHR1′)n—O]x—O—R1″ (III).Type: GrantFiled: August 14, 2000Date of Patent: November 6, 2001Assignee: Ciba Specialty Chemicals Corp.Inventor: Shivakumar Basalingappa Hendi
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Patent number: 6287377Abstract: A universal tinting concentrate for both solvent- and water-based paints and coatings. The universal tinting concentrate is a composition which includes a colorant component, such as pigment, colorant, tinting agent and/or metal effect agent; a pigment dispersant including an organic acid containing no more an 70 carbon atoms; and a pH-neutralizing agent. In one embodiment of the invention, the pigment dispersant is represented by the following structure: where r and s are integers and r+s is 6 to 16; and x and y are integers and x+y is 0 to 19; and Z is H or COOH and Z′ is H or COOH.Type: GrantFiled: October 13, 1999Date of Patent: September 11, 2001Assignee: The Valspar CorporationInventors: Mark Binns, Dana L. Phillips, Don Diehl, Stephen Korenkiewicz, Larry Brandenburger
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Patent number: 6284036Abstract: The present invention relates to a process for pigmenting a porous sintered material comprising boride, carbide, silicide, nitride or phosphide compounds by applying a solution of a soluble pigment derivative to the non-coloured sintered material and regenerating the organic pigment by heating, whereby the organic pigment is deposited into the sintered material's pores, as well as to the new pigmented sintered materials themselves.Type: GrantFiled: November 8, 1999Date of Patent: September 4, 2001Assignee: Ciba Specialty Chemicals CorporationInventors: Seiji Homma, Hans-Thomas Schacht, Zhimin Hao
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Patent number: 6284035Abstract: Pigment preparations in granule form comprising as essential constituents from 50 to 99.5% by weight of at least one inorganic pigment and from 0.5 to 50% by weight of at least one organic pigment are prepared and used for coloring polymeric materials.Type: GrantFiled: September 7, 1999Date of Patent: September 4, 2001Assignee: BASF AktiengesellschaftInventors: Hansulrich Reisacher, Anton Dotter, Gerhard Berger, Otmar Pelz, Oliver Seeger
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Patent number: 6274065Abstract: Preparation of a solid fluorescent composition comprising (1) mixing a host chromophore and an effective amount of a pigment precursor in a solvent, then generating a pigment as guest chromophore in-situ from the pigment precursor, and, subsequently, isolating the mixture of the host and guest chromophores, thereby forming a solid solution, or (2) mixing a polymer as a matrix or a polymer precursor and a pigment precursor in a solvent, if desired in the presence of a chromophore being a host component, then generating a pigment in-situ from the pigment precursor (being the guest component if a host component is present), and, subsequently, isolating the mixture of polymer and pigment, and—if present—the host component, thereby forming a solid solution, wherein in all cases where there is a host component, the absorption spectrum of the pigment (guest chromophore) overlaps with the fluorescence emission spectrum of the host chromophore.Type: GrantFiled: February 3, 1998Date of Patent: August 14, 2001Assignee: Ciba Specialty Chemicals CorporationInventors: Takashi Deno, Kunihiko Kodama, Abul Iqbal, Brian Gerrard Devlin
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Patent number: 6274728Abstract: Compounds of formula A(B)x (I), wherein x is an integer from 1 to 8, A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, indanthrone, isoindolinone, isoindoline, dioxazine, azo, phthalocyanine or diketopyrrolopyrrole series that is bonded to x groups B via one or more hetero atoms, those hetero atoms being selected from the group consisting of N, O and S and forming part of the radical A, each group B independently of any other(s) is hydrogen or a group of the formula at least one group B being a group of the formula The compounds according to the invention are used in high-molecular-weight organic materials, thermo-, photo- or chemo-sensitive recording materials, light-sensitive negative or positive resist compositions, ink compositions for ink-jet printing and color tapes for thermal transfer printing.Type: GrantFiled: December 16, 1999Date of Patent: August 14, 2001Assignee: Ciba Specialty Chemicals Corp.Inventors: Véronique Hall-Goulle, Aline Bize
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Patent number: 6264733Abstract: Pigment particle growth and/or crystal phase directors of the following formula: (MO3S)m—Q—(CH2—(X)—(Y)n)o wherein: Q represents a pigment moiety; M represents a metal cation, quaternary N cation or H; X is an aromatic group, a cyclo-hetero aliphatic group with at least one 5 atom or 6 atom ring or a hetero aromatic group with at least one 6 atom ring and which is not a phthalimido group; Y is a sulfonic or carboxylic acid or salt thereof; m and n independently from each other represent an integer from 0 to 2.5; and o is an integer from 0.05 to 4.Type: GrantFiled: February 2, 2000Date of Patent: July 24, 2001Assignee: Ciba Specialty Chemicals CorporationInventor: Fridolin Bäbler
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Patent number: 6261359Abstract: Compounds of formula A(B)x, (I), wherein x is an integer from 1 to 4, A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, isoindolinone, isoindoline, dioxazine, phthalocyanine or azo series, which radical contains x N-atoms attached to B, preferably with at least one directly adjacent or conjugated carbonyl group, B is a group of formula and, if x is 2, 3 or 4, may also be one, two or three hydrogen atoms. The symbols Q, R1, R2, R3, R4, X, Y, Z, m and n, are as defined in claim 1.Type: GrantFiled: June 11, 1998Date of Patent: July 17, 2001Assignee: Ciba Specialty Chemicals CorporationInventors: Zhimin Hao, John S. Zambounis, Abul Iqbal
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Patent number: 6258158Abstract: The present invention relates to a process for pigmenting a porous metal oxide by applying a solution of a soluble pigment derivative and regenerating the organic pigment by heating, whereby the organic pigment is deposited into the metal oxide's pores. The invention also relates to pigmented porous metal oxides and materials comprising a solid substrate and a surface layer of a pigmented metal oxide.Type: GrantFiled: November 8, 1999Date of Patent: July 10, 2001Assignee: Ciba Specialty Chemicals Corp.Inventors: Philippe Bugnon, Seiji Homma, Patrick Verhoustraeten
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Patent number: 6248165Abstract: Ternary solid solutions useful as pigments are disclosed. The ternary solid solutions result from incorporating a third component, which is a diketopyrrolopyrrole or quinacridone pigment, into the crystal lattice of the mixed crystal formed from equimolar amounts of two different diketopyrrolopyrrole pigments.Type: GrantFiled: February 9, 2000Date of Patent: June 19, 2001Assignee: Ciba Specialty Chemicals CorporationInventors: Shivakumar Basalingappa Hendi, Fridolin Bäbler, Zhimin Hao, Abul Iqbal
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Publication number: 20010003263Abstract: Various modified pigment products are described which are preferably capable of being dispersed in a variety of materials such as coatings, inks, toners, films, plastics, polymers, elastomers, and the like. The modified pigments are pigments having attached groups, such as polymeric groups, onto the pigment by means other than adsorption.Type: ApplicationFiled: December 29, 2000Publication date: June 14, 2001Inventors: Joseph E. Johnson, Nanying Bian, Collin P. Galloway
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Patent number: 6241813Abstract: The invention relates to a process for preparing organic pigment granules with a particular particle size wherein an organic pigment with a particle size of 0.01 to 10 &mgr;m is mixed with water, a C1-C4alcohol, a C3-C8ketone or a mixture thereof, a binder and ammonia or a C1-C3amine and an emulsifier. This mixture is pressed in a continuously operating apparatus through one or more apertures each having a size of 0.2-5.0 mm2, the apparatus consisting of at least one conveying device and a shaping section comprising the apertures, and being constructed, and operated with a throughput, such that the pressure in its shaping section does not exceed 10 bar. The granulated product is then dried at a temperature of −50 to 200° C. at atmospheric pressure or under reduced pressure. The invention also relates to pigment granules prepared by the process of the invention, with a particle size of 0.5 to 4 mm, wherein the pigment present essentially has a particle size from 0.01 to 10&mgr;m.Type: GrantFiled: March 29, 1999Date of Patent: June 5, 2001Assignee: Ciba Specialty Chemicals CorporationInventors: Paolo Balliello, Horst Olaf Brücker
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Patent number: 6241814Abstract: Linear unsubstituted and substituted quinacridone pigments and quinacridone mixed-crystal pigments are obtained by cyclizing dianilinoterephthalic acid with polyphosphoric acid and then hydrolyzing the ring closure mixture, said mixture being metered into an amount of water or orthophosphoric acid which is such that the final orthophosphoric acid concentration is greater than or equal to 50% by weight in the hedrolysis mixture.Type: GrantFiled: July 12, 1999Date of Patent: June 5, 2001Assignee: Clariant GmbHInventors: Manfred Urban, Martin Boehmer, Dieter Schnaitmann, Joachim Weber
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Patent number: 6221150Abstract: The present invention relates to pigment dispersants of the formula (I) in which Z1 is a radical of the formula (Ia) —[X—Y]q—[X1—Y1]r—[X2—NH]sH (Ia) in which X, X1 and X2 are identical or different and are a branched or unbranched C2-C6-alkylene radical or a C5-C7-cycloalkylene radical which can be substituted by from 1 to 4 C1-C4-alkyl radicals, hydroxyl radicals, and/or by from 1 to 2 further C5-C7-cycloalkyl radicals; Y and Y1 are identical or different and are an NH—, —O— or N(C1-C6-alkyl) group, q is a number from 1 to 6, r and s independently of one another are a number from 0 to 6, but are not simultaneously zero; and Z is defined as Z1, Z2 or Z3, where Z2 is a radical of the formula (Ib) —[X—O]q1—[X1—O]qH (Ib) in which q1 is a number from 0 to 6, and Z3 is hydrogen, hydroxyl, amino or C1-C6-alkyl where the alkyl group canType: GrantFiled: February 22, 1999Date of Patent: April 24, 2001Assignee: Clariant GmbHInventors: Joachim Weber, Manfred Urban, Erwin Dietz
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Patent number: 6200378Abstract: A compound according to the formula (I) wherein R1 and R2 are independently the atoms necessary to complete the formation of a substituted or unsubstituted aromatic or aliphatic carbocyclic or heterocyclic ring system and R3 and R4 have the meaning indicated in claim 1, a new process for the preparation of such a compound, solid solutions and mixtures comprising such a compound and the use of a compound of formula (I) as a pigment.Type: GrantFiled: July 23, 1999Date of Patent: March 13, 2001Assignee: Clariant Finance (BVIØ) LimitedInventors: Bruno Piastra, Bansi Lal Kaul
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Patent number: 6187059Abstract: A method and a color mixture for shading paper, and a shaded paper that comprises or consists of one or more layers made of the same or different pulps, which paper is intended to be used in connection with foodstuffs. The pulp or paper layer is treated with a color mixture of at least two optically cooperating pigments that are approved for foodstuffs, one of which is quinacridone red with the FDA registration details C.I. pigment violet 19, C.I. No. 73900 (Code of Federal Regulations, Food and Drugs, Title 21, Part 170-199), and constituting the primary component of the color mixture, in order to obtain a shaded paper with a value for the color coordinate b* that is between 0 and 3. The primary component may comprise between about 75-85 per cent of the color mixture with the rest at least one blue pigment, such as phthalocyanine blue.Type: GrantFiled: January 31, 2000Date of Patent: February 13, 2001Assignee: Stora Kopparbergs Bergslags ABInventor: Bertil Ahlinder
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Patent number: 6129786Abstract: Composite pigments based on nanoparticulate metal oxides modified by crosslinked or uncrosslinked polyalkylenepolyamine and anionic dyes are useful for coloring paints, inks, plastic, paper, wood, leather and textile materials.Type: GrantFiled: May 19, 1998Date of Patent: October 10, 2000Assignee: BASF AktiengesellschaftInventors: Boubacar Camara, Manfred Patsch, Ulrich Steuerle, Jurgen Romeis
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Patent number: 6123763Abstract: A colorless or only slightly colored pigment dispersing agent which is feasible as a pigment dispersing agent for pigments having various hues and has the general formula (1), ##STR1## wherein R.sub.1, R.sub.2, X.sub.1, Y.sub.1, Y.sub.2, k and h are as defined in claim 1.Type: GrantFiled: January 20, 1999Date of Patent: September 26, 2000Assignee: Toyo Ink Mfg. Co., Ltd.Inventors: Takashi Kamikubo, Yuuji Hirasawa, Toru Omura
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Patent number: 6123761Abstract: A pigment composition comprising pigment and an amido phthalocyanine compound having the general formula I:MPc--(CONR.sup.1 R.sup.2).sub.n Iwherein which Pc is a phthalocyanine ring which is optionally further substituted by up to an average of one chlorine or bromine atom or of a sulphonic acid; M is hydrogen or a metal such as Mg, Al, Ni, Fe, Zn, Pb, Sn or Cu: n is a number ranging from 0.1 to 4.0; R.sup.1 and R.sup.2 are independently selected from hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.5 -C.sub.12 cycloalkyl, C.sub.7 -C.sub.12 aralkyl, C.sub.6 -C.sub.10 aryl, C.sub.4 -C.sub.6 alkyl amino alkyl, C.sub.2 -C.sub.20 aliphatic amine, C.sub.2 -C.sub.20 aliphatic amine acid salt, C.sub.2 -C.sub.20 alcohol, polyoxyalkylene, polyoxyalkylene amine.Type: GrantFiled: August 18, 1999Date of Patent: September 26, 2000Assignee: Ciba Specialty Chemicals CorporationInventor: Thomas Healy
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Patent number: 6113683Abstract: Colored pearlescent pigment comprising a pearlescent pigment and a second pigment, characterized in using an adhesion promotor for the mutual adsorbance of the pearlescent pigment and the second pigment, whereby the adhesion promotor is a polymer containing hydroxy groups, a process for its preparation, its use and a colored high molecular weight material.Type: GrantFiled: November 10, 1998Date of Patent: September 5, 2000Assignee: Ciba Specialty Chemicals CorporationInventors: Fritz Herren, Kimiya Takeshita, Michel Fran.cedilla.ois
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Patent number: 6102996Abstract: A pigment-based ink composition is provided which employs a pigment precursor that is soluble in a non-aqueous solvent. Preferably, the ink composition is in the form of an aqueous, two-phase system wherein the pigment precursor is solubilized in a high boiling, water-insoluble organic compound. Optionally, a second high boiling compound miscible with both aqueous and organic phases and at least one amphiphile are also present.Type: GrantFiled: December 12, 1997Date of Patent: August 15, 2000Assignee: Hewlett-Packard CompanyInventor: Dennis P Parazak
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Patent number: 6090196Abstract: A new beta quinacridone pigment characterized by masstone and tint reflection spectra, and a process for its preparation is disclosed. The new beta quinacridone pigment is especially useful for coloring coating compositions, such as automotive paints, and plastics. Also disclosed is a new pigment composition consisting of the inventive beta quinacridone pigment and a carbazole dioxazine pigment.Type: GrantFiled: April 24, 1998Date of Patent: July 18, 2000Assignee: Ciba Specialty Chemicals CorporationInventor: Fridolin Babler
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Patent number: 6083315Abstract: An agglomerated pigment comprises (1) an organic pigment compound, (2) either a sulfonated organic pigment compound obtained by incorporating at least one sulfonic group into the organic pigment compound or a sulfonated organic pigment derivative obtained by incorporating at least one sulfonic group into a derivative of the organic pigment compound, (3) univalent inorganic counter ions bonded to sulfonic groups of component (2), and (4) bivalent or higher inorganic counter ions which are bonded to sulfonic groups of component (2) and wherein each such group has an at least univalent positive charge, the surface of the agglomerated organic pigment as a whole being positively charged. An aqueous pigment dispersion and a water-based ink composition both having excellent storage stability, an agglomerated pigment for use as a raw material for the dispersion, and a process for producing the pigment are provided.Type: GrantFiled: December 22, 1997Date of Patent: July 4, 2000Assignees: Seiko Epson Corporation, Mikuni Color Ltd.Inventors: Hiroto Nakamura, Hidehiko Komatsu, Michinari Tsukahara, Hideo Yamazaki, Minoru Waki, Naoki Okamoto, Kazumi Adachi
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Patent number: 6066203Abstract: This invention relates to pigment derivatives having the formula ##STR1## wherein Q represents an organic pigment moiety;X is -SO.sub.2 - or -CO-;Alk is C.sub.2 -C.sub.8 alkylene or substituted C.sub.2 -C.sub.8 alkylene;m is an integer of from 1 to 4;n and p are independently integers of from 2 to 6.This invention further relates to the treatment of organic pigments with such pigment derivatives and the use of such treated pigments in coating compositions.Type: GrantFiled: May 1, 1998Date of Patent: May 23, 2000Assignee: Bayer CorporationInventors: Ibraheem T. Badejo, Daphne J. Rice
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Patent number: 6063182Abstract: A stir-in pigment composition for coloring high-molecular-weight material, particularly coatings and ink systems, comprises 85 to 99.5 parts by weight of a pigment and 0.5 to 15 parts by weight of an additive comprising a vinylpyrrolidone polymer or copolymer. The stir-in pigment composition is in the form of microgranules and is obtainable by spray drying a high solids content aqueous pigment dispersion containing the pigment and the additive. The new pigment composition powders are easily handled, easily wetted and disperse rapidly to form homogeneous aqueous pigment dispersions which are practically free of larger pigment aggregates and can readily be incorporated into aqueous ink and paint systems as stir-in pigments without a dispersion step in a bead mill.Type: GrantFiled: December 16, 1998Date of Patent: May 16, 2000Assignee: Ciba Speciality Chemicals CorporationInventor: Fridolin Babler