Mixed Pigments Containing Patents (Class 106/494)
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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: 6471766Abstract: Pigment dispersants comprise compounds represented by the following formula (I) or (II) or metal, ammonium or amine salts thereof: wherein X1 is a hydrogen or halogen atom or an alkyl or acylamino group, Y1 is an anthraquinonylamino, phenylamino, naphthyl-amino or phenoxy group, each of R1 and R3 is a hydrogen atom or a substituted or unsubstituted alkyl or phenyl group, R2 is a substituted or unsubstituted alkylene, phenylene or naphthylene group, X2 is a hydrogen or halogen atom or a substituted or unsubstituted alkyl group, R4 is a substituted or unsubstituted phenyl or naphthyl group, and n means an average number of sulfonic acid groups introduced in said compound and stands for a number of from 0.5 to 2. Pigment compositions, such as colorants for gravure inks, paints or color filters, comprise pigments and the pigment dispersants.Type: GrantFiled: January 16, 2001Date of Patent: October 29, 2002Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Shigeru Ohki, Takayuki Soga, Kazutaka Aoki, Shotoku Takami, Hisao Okamoto, Hiroaki Saikatsu, Shirou Yamamiya
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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: 6432192Abstract: A pigment is synthesized in an aqueous medium and the pigment dispersion is purified by ultrafiltration or microfiltration. In particular, an aqueous pigment dispersion having a very small average particle size and a narrow particle size distribution may be prepared by the steps of (a) synthesizing a pigment in an aqueous medium and (b) removing an impurity such as a dissolved synthesis by-product or unreacted starting material through cross flow filtration using a membrane having an average pore diameter of from about 3 nanometers to about 3000 nanometers to produce a purified aqueous pigment dispersion.Type: GrantFiled: February 23, 2000Date of Patent: August 13, 2002Assignee: Flint Ink CorporationInventors: Wayne L. Cook, Douglas P. Gebler, Norman E. Pratt
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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: 6423246Abstract: A mixture of crosslinkable liquid-crystalline substances having a chiral phase (LC mixture), containing polymerizable groups, where at least 90% of the polymerizable groups are part of molecules containing at least two polymerizable groups (crosslinker molecules), wherein from 3.2 to 15 mmol of polymerizable groups are present per g of LC mixture. The crosslinked pigments show little color shift in the presence of solvents or upon application to substrate different temperatures.Type: GrantFiled: April 10, 2000Date of Patent: July 23, 2002Assignee: Consortium fur Elektrochemische Industrie GmbHInventors: Michael Kasch, Jürgen Küpfer, Franz-Heinrich Kreuzer
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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: 6409956Abstract: An injection-molding process using warp-free pigment compositions including diaryldiketopyrrolo[3,4-C]pyrroles to improve the dimensional stability of the injection molded product by decreasing warping wherein the constituents of the formulation being injection molded are added into an injection molding machine in ready-premixed form or simultaneously as individual components. Preferred pigments are quinacridone pigments, disazo condensation pigments, isoindolinone pigments and pyrrolo[3,4-C]pyrrole pigments with pyrrolo[3,4-C]pyrrole pigments being especially preferred.Type: GrantFiled: April 20, 1999Date of Patent: June 25, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Franck Rey Flandrin, Guo-Hua Hu, Philippe Bugnon, Zhimin Hao
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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: 6402828Abstract: Pigment composition which comprises azo pigments and auxochromes. The composition is prepared in-situ by coupling an aromatic diazonium compound with 3-hydroxy-2-naphthoic acid and can be produced in a fixed quality with excellent reproducibility, transparency, a high color strength, clear and vivid hue and good water resistance.Type: GrantFiled: February 14, 2000Date of Patent: June 11, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Greig Chisholm, Paul Kerwin, Mairi Nicol
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Patent number: 6403797Abstract: This invention relates to a process for preparing perylene pigment compositions by (a) reacting, at a temperature of less than about 25° C., a mixture of (1) a perylene tetracarboxylic compound, (2) at least about 0.1% by weight, relative to the perylene tetracarboxylic compound, of a surfactant of formula (I) wherein R1, R2, R3, X, Y, Z, and Z′ are defined herein, (3) an equivalent excess, relative to the amount of the perylene tetracarboxylic compound, of ammonia or a primary amine RA—NH2, wherein RA is defined herein, and (4) optionally, a solvent, to form a perylene intermediate; (b) heating the perylene intermediate at a temperature of about 50° C. to about 250° C., optionally in the presence of certain non-pigmentary cyclic anhydrides or imides and/or solvents; and (c) collecting the perylene pigment composition.Type: GrantFiled: December 22, 2000Date of Patent: June 11, 2002Assignee: Bayer CorporationInventors: Charles W. Sandefur, Brian L. Thompson, Michael J. Greene, Gregory R. Schulz
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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: 6391104Abstract: This invention relates to perylene pigment compositions containing a reactive co-precipitated blend of (1) about 75 to about 99.9 mol %, relative to the pigment composition, of a compound having the formula (I) wherein R is hydrogen, C1-C6 alkyl, C5-C8 cycloalkyl, C7-C6 aralkyl, or C6-C10 aryl, A is C1-C6 alkyl, C1-C6 alkoxy, a sulfonyl group, amino, ammonium, hydroxy, nitro, or halogen, and m is zero or a number from 1 to 8; and (2) about 0.1 to about 25 mol %, relative to the pigment composition, of a perylene dicarboxamidine imide having the formula (II) wherein W is optionally substituted or modified C2-C3 alkylene, and R, A, and m are defined as above.Type: GrantFiled: December 1, 2000Date of Patent: May 21, 2002Assignee: Bayer CorporationInventor: Gregory R. Schulz
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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: 6375733Abstract: Disclosed are blue shade red to magenta monoazo pigments which are obtained by diazotization of 5-alkoxy-2-aminobenzenesulfonic acids, coupling of the diazonium compound with a hydoxynaphthalenesulfonic acid and subsequent laking of the coupling product with a divalent metal salt. The pigments are characterized by the formula: wherein R is a lower alkyl, e.g. a methyl or ethyl group, or a hydroxycarbyl group, R1 is hydrogen, chloro, a lower alkyl group such as methyl or ethyl, or a lower alkoxy group such as a methoxy or an ethoxy group, and M is Ca, Sr, Ba, Mn, Mg or Zn. The new pigments have a magenta color, excellent heat stability, bleed fastness and very high color strength. These pigments are suitable for the pigmenting of plastics, inks and coatings, among other materials.Type: GrantFiled: August 28, 2000Date of Patent: April 23, 2002Assignee: Engelhard CorporationInventor: Amrit P. Bindra
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Patent number: 6372036Abstract: The present invention relates to a pigment preparation containing a mixture of coated or uncoated Al2O3 flakes, and one or more special-effect pigments, and a phosphate derivative, and to the use thereof, especially in printing inks.Type: GrantFiled: December 23, 1999Date of Patent: April 16, 2002Assignee: Merck Patent Gesellschaft Beschraenkter HaftungInventors: Gerhard Pfaff, Sabine Schoen, Norio Takahashi
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Publication number: 20020040665Abstract: The invention provides a process for the fine division of pigments which comprises dissolving coarsely crystalline crude pigments in a solvent and precipitating them with a liquid precipitation medium by spraying the pigment solution and the precipitation medium through nozzles to a point of conjoint collision in a reactor chamber enclosed by a housing in a microjet reactor, a gas or an evaporating liquid being passed into the reactor chamber through an opening in the housing for the purpose of maintaining a gas atmosphere in the reactor chamber, and the resulting pigment suspension and the gas or the evaporated liquid being removed from the reactor through a further opening in the housing by means of overpressure on the gas entry side or underpressure on the product and gas exit side.Type: ApplicationFiled: October 5, 2001Publication date: April 11, 2002Applicant: Clariant GmbHInventors: Erwin Dietz, Joachim Weber, Dieter Schnaitmann, Christian Wille, Leonhard Unverdorben, Klaus Brychcy
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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: 6358574Abstract: Crosslinkable LC organosiloxanes exhibiting excellent UV stability, contain units of the general formula 1 [RbMescSiO(4−b−c)/2] (1) in which R are C1-C4-alkyl radicals, Mes is at least one group of the general formula 2 and, if desired, of the general formula 3, b has the value 0, 1 or 2, and c has the value 0, 1, 2, 3 or 4, with the proviso that the sum of the values of b and c is a maximum of 4, where the Mes groups of the general formulae 2 and 3 exhibit the following structure: —(CH2)p—(O)q—A—[B—A]r—E—F—VN (2) —(CH2)m—(O)n—(A)t—Q—X (3) in which A, B, Q, X, E, F, VN, m, p, n, q, t and r have the meanings given in claim 1, with the proviso that the LC organosiloxanes do not constitute a phenyl ester derivative of an aliphatic, aromatic or heteroaromatic carboxylic acids.Type: GrantFiled: December 6, 1999Date of Patent: March 19, 2002Assignee: Consortium fur Elektrochemische Industrie GmbHInventors: Norman Häberle, Jürgen Küpfer, Horst Leigeber
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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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Publication number: 20020000778Abstract: An umber paint, which is excellent in transparency and heat resistance, and which does not bring about environmental pollution, bulbs coated with the umber paint, and turn signal lams equipped with the bulbs. The umber paint, for turn signal lamps, contains at least a red pigment 10a and a yellow pigment 10b, wherein the yellow pigment comprises acetylacetone metal chelateumber.Type: ApplicationFiled: June 28, 2001Publication date: January 3, 2002Inventors: Koichi Nakamura, Midori Ishikawa
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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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Publication number: 20010047740Abstract: 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 the component (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: ApplicationFiled: February 2, 2001Publication date: December 6, 2001Applicant: Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Nobuto Wada, Kazutaka Aoki, Yutaka Nakagawa, Shotoku Takami, Michiei Nakamura
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Patent number: 6294012Abstract: Disclosed is a yellow monoazo pigment which is obtained by diazotization of anthranilic acid, coupling of the diazonium compound with 1-(3′-sulfophenyl)-3-methyl-5-pyrazolone and subsequent laking of the coupling product to a strontium salt. The pigment is characterized by the formula: The new pigment has excellent heat stability and bleed fastness and very high color strength. It is suitable for pigmenting of plastics, inks and coatings, and particularly suitable for pigmenting of plastics.Type: GrantFiled: November 15, 1999Date of Patent: September 25, 2001Assignee: Engelhard CorporationInventor: Amrit P. Bindra
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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: 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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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: 6228162Abstract: C.I. Pigment Red 53:2 is obtained in new crystal modifications (epsilon, zeta, eta, theta, iota, kappa, lambda, nu, xi, omicron, pi and rho phases) by heating any other phase of this pigment in certain organic solvents and reprecipitating the pigment. The new crystal phases differ from one another in rheology and coloristics.Type: GrantFiled: December 17, 1999Date of Patent: May 8, 2001Assignee: Clariant GmbHInventor: Martin U. Schmidt
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Patent number: 6224665Abstract: This invention relates to a process for preparing perylene pigment compositions by reaction of (a) a perylene tetracarboxylic compound; (b) about 0.01 to about 20% by weight, relative to the perylene tetracarboxylic compound, of a non-pigmentary cyclic anhydride or imide of formula (I) wherein W is O or NR1 (where R1 is hydrogen, a metal, or optionally substituted alkyl, cycloalkyl, aralkyl, or aryl), R2, R3, and R4 are various combinations of substituents and/or fused-on rings, and the dotted line is an optional double bond representing R2−C=C—R3; (c) ammonia or a primary alkyl, aralkyl, or aryl amine; optionally in the presence of (d) a solvent and/or (e) one or more dispersants.Type: GrantFiled: January 25, 2000Date of Patent: May 1, 2001Assignee: Bayer CorporationInventors: Gregory R. Schulz, Michael J. Greene
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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: 6203909Abstract: A composite pigment, which consists of a colourant and a substrate, using a substrate (S) and a colourant (C), which are each coated with ions or ionisable compounds having a charge rotating in the same direction, and, if desired, of additional ions or ionisable compounds having a change rotating in the same direction as layer material (L), wherein either (I) the sign of the change of the coating of S, or the sign of the charge of the coating of S and of the charge of L, which is the same, is opposite to that of charge of the coating of C, or (II) the sign of charges of the coatings of S and C is the same and is opposite to that of the charge of L.Type: GrantFiled: January 9, 1998Date of Patent: March 20, 2001Assignee: Ciba Specialty Chemicals CorporationInventor: Laurent Chassot
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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: 6146809Abstract: Composition comprising a solid organic support material to which either directly or via a bridging group, are covalently linked fluorescent host chromophores and fluorescent guest chromophores, wherein the fluorescence emission spectrum of the host chromophore overlaps with the absorption spectrum of the guest chromophore, wherein the host chromophore is selected from the group consisting of benzo[4,5]imidazo[2,11-a]isoindol-11-ones.Type: GrantFiled: February 3, 1998Date of Patent: November 14, 2000Assignee: Ciba Specialty Chemicals CorporationInventors: Brian Gerrard Devlin, Junji Otani, Kazuhiko Kunimoto, Abul Iqbal, Sameer Hosam Eldin
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Patent number: 6143068Abstract: This invention relates to a process for preparing perylene pigment compositions by reaction of(a) a perylene tetracarboxylic compound;(b) about 0.01 to about 20% by weight, relative to the perylene tetracarboxylic compound, of a non-pigmentary cyclic anhydride or imide of formula (I) ##STR1## wherein W is O or NR' (where R.sup.1 is hydrogen, a metal, or optionally substituted alkyl, cycloalkyl, aralkyl, or aryl), R.sup.2, R.sup.3, and R.sup.4 are various combinations of substituents and/or fused-on rings, and the dotted line is an optional double bond representing R.sup.2 --C.dbd.C--R.sup.3 ;(c) ammonia or a primary alkyl, aralkyl, or aryl amine; optionally in the presence of(d) a solvent and/or(e) one or more dispersants.Type: GrantFiled: January 25, 2000Date of Patent: November 7, 2000Assignee: Bayer CorporationInventors: Gregory R. Schulz, Michael J. Greene
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Patent number: 6140406Abstract: A coating composition for an ink jet recording medium comprises an aqueous suspension of absorptive pigment, a binder, a sizing agent, and a cationic fixing agent. The coating composition combines solids content of greater than 30% with good runnability. The composition may preferably be dispersed at pH values in the range of 4.5 to 7.0. The pigment is preferably a mixture of 75% or more silica gel having a pore volume of 0.5-2.0 cc/g, and 10% or more alumina or alumina hydrate. A method for making down the coating composition includes the sequential steps of dispersing a polyvinyl alcohol binder in water, cooling the binder dispersion, dispersing a sizing agent, and mixing the suspension thoroughly before addition of a cationic fixing agent and pigment.Type: GrantFiled: June 12, 1998Date of Patent: October 31, 2000Assignee: Consolidated Papers, Inc.Inventors: Leonard J. Schliesman, Leland O. Tritz, Karen K. Spreda
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Patent number: 6136081Abstract: An aqueous ink Jet ink composition comprising a humectant in an amount of up to about 70% by weight of the composition, and from about 0.Type: GrantFiled: August 10, 1999Date of Patent: October 24, 2000Assignee: Eastman Kodak CompanyInventors: Raymond P. Scaringe, Steven Evans, Richard C. VanHanehem
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Patent number: 6132501Abstract: An aqueous ink jet ink composition comprising a humectant in an amount of up to about 70% by weight of the composition, and from about 0.Type: GrantFiled: August 10, 1999Date of Patent: October 17, 2000Assignee: Eastman Kodak CompanyInventors: Raymond P. Scaringe, Steven Evans, Richard C. VanHanehem
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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