Quinacridone Pigment Or Derivative Patents (Class 106/497)
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Publication number: 20100050904Abstract: The invention relates to a methods finishing an organic pigment by dissolving or dispersing the pigment in a mineral acid and crystallizing the pigment from the solution or dispersion by mixing with an aqueous diluent in the presence of a crystallization modifier constituted by a sulfonate-functional condensation product of a naphthalenesulfonic acid and at least one aliphatic aldehyde having 1 to 6 carbon atoms, and then isolating the pigment as a solid, wherein the crystallization modifier is present in the aqueous diluent.Type: ApplicationFiled: April 10, 2008Publication date: March 4, 2010Applicant: BASF SEInventors: Joachim Jesse, Benno Sens, Richard van Gelder, Matthias Klueglein, Wolfgang Best, Rainer Henning
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Patent number: 7662308Abstract: Novel fluorescent polyhedral oligomeric silsesquioxane (POSS) colorants are provided. The colorants are strongly fluorescing and long lasting with excellent light stability. The novel colorants can be prepared from chromophores found in common pigments and provide a simple way to convert an insoluble pigment into a soluble fluorescent colorant.Type: GrantFiled: July 16, 2007Date of Patent: February 16, 2010Assignee: Ciba Specialty Chemicals CorporationInventors: Suruliappa G. Jeganathan, David Bramer, Redina Kote, Gajanan J. Maladkar
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Patent number: 7658793Abstract: The invention relates to a pigment preparation based on at least one inorganic pigment and at least one organic pigment, and to a method for producing one such pigment preparation. Said pigment preparation contains particles wherein fine organic pigment particles are combined with inorganic pigment particles, said particles also being provided with an organic macromolecular coating. The inventive pigment preparation is produced by wet-grinding the inorganic and organic pigments, optionally adding other constituents, in the presence of a surface-active substance in the form of a macromolecular organic compound.Type: GrantFiled: March 5, 2004Date of Patent: February 9, 2010Assignee: Heubach GmbHInventors: Rainer Heubach, Yvonne Brussaard, Hugo Brussaard
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Patent number: 7648571Abstract: A non-aqueous pigment dispersion includes a diketopyrrolo-pyrrole pigment, a polymeric dispersant, and a dispersion synergist in a dispersion medium wherein the dispersion synergist is a quinacridone derivative containing at least one acid group or a salt thereof.Type: GrantFiled: November 28, 2006Date of Patent: January 19, 2010Assignee: Agfa Graphics NVInventor: Geert Deroover
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Patent number: 7648572Abstract: A non-aqueous pigment dispersion including a diketopyrrolo-pyrrole pigment, a polymeric dispersant, and a dispersion synergist in a dispersion medium wherein the dispersion synergist is a quinacridone derivative containing at least one acidic group or a salt thereof.Type: GrantFiled: November 28, 2006Date of Patent: January 19, 2010Assignee: Agfa Graphics NVInventor: Geert Deroover
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Patent number: 7585364Abstract: A quinacridone derivative according to Formula (I): wherein R1 and R2 are each independently selected from the group consisting of hydrogen, alkyl, and halogen. Also, methods for preparing non-aqueous pigment dispersions and inkjet inks including a pigment and the quinacridone derivative of Formula (I).Type: GrantFiled: November 28, 2006Date of Patent: September 8, 2009Assignee: Agfa Graphics NVInventor: Geert Deroover
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Patent number: 7553365Abstract: An aqueous pigment dispersion is produced by ultrafinely dispersing a pigment dispersion mixture, which has been obtained by mixing at least a pigment and a dispersant in an aqueous medium, with microbeads having diameters of not smaller than 0.02 mm but smaller than 0.2 mm. A color composition for a color filter is produced by dispersing a mixture of a pigment, a dispersant, a resin varnish and a solvent with the microbeads in a mill.Type: GrantFiled: January 25, 2005Date of Patent: June 30, 2009Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Shigeru Sakamoto, Yoshimasa Tsuchiya, Masanori Takakamo, Tohru Hosoda, Akio Yoshida, Michiei Nakamura, Naoyuki Sakai, Dai Watanabe, Hideyuki Koiso, Kenji Ogawa
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Patent number: 7550041Abstract: The invention pertains to a highly concentrated pigment comprising from 75 to 95% by weight, preferably from 78 to 95% by weight, most preferred from 80 to 95% by weight, based on the weight of the composition, of a pigment; from 0 to 20% by weight, preferably from 5 to 18% by weight, based on the weight of the composition, of a resin; the total of pigment and resin being from 85 to 98% by weight of the composition; and from 1 to 15% by weight, preferably from 2 to 15% by weight, most preferably from 5 to 15% by weight, based on the weight of the composition, of a C10-C18 alcohol, a liquid hydrocarbon having a boiling point higher than 80° C. at 105 Pa, or both a C10-C18 alcohol and a liquid hydrocarbon having a boiling point higher than 80° C. at 105 Pa. Also claimed are a process for its manufacture, comprising dry-milling, blending and kneading the components, and the use of the pigment concentrates for the preparation of a masterbatch, ink, coating, plastic material, toner or colour filter.Type: GrantFiled: October 24, 2005Date of Patent: June 23, 2009Assignee: Ciba Specialty Chemicals CorporationInventors: Thomas Healy, Lynda Cannon, Tracy Murray
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Publication number: 20090139430Abstract: A method for manufacturing a pigment dispersion includes mixing a solution in which a pigment is dissolved in an acid, and a reaction liquid that decreases a solubility of the pigment in the solution, in the presence of a dispersant for the pigment, and causing the pigment to precipitate. The solution and reaction liquid are mixed in the presence of the dispersant and a cyclic carbonate.Type: ApplicationFiled: November 25, 2008Publication date: June 4, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Tetsuo Hino, Takayuki Teshima
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Patent number: 7537654Abstract: A process for preparing coated nanoscale quinacridone pigment particles, includes: mixing a quinacridone pigment precursor or crude quinacridone pigment with a first solution including an acid to form nanoscale quinacridone pigment particles; adding the first solution and formed nanoscale quinacridone pigment particles into a second solution including deionized water to form a third solution and to precipitate the nanoscale quinacridone pigment particles; and washing the precipitated nanoscale quinacridone pigment particles in a fourth solution including a surface additive compound, whereby the surface additive compound coats the nanoscale quinacridone pigment particles; wherein the surface additive compound is a rosin compound.Type: GrantFiled: September 15, 2008Date of Patent: May 26, 2009Assignee: Xerox CorporationInventors: Roger E. Gaynor, C. Geoffrey Allen
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Patent number: 7538155Abstract: A method of producing an organic pigment dispersion liquid, which has the steps of: providing an alkaline or acidic solution with an organic pigment dissolved therein and an aqueous medium, wherein a polymerizable compound is contained in at least one of the organic pigment solution and the aqueous medium; mixing the organic pigment solution and the aqueous medium; and thereby forming the pigment as fine particles; then polymerizing the polymerizable compound to form a polymer immobile from the pigment fine particles.Type: GrantFiled: July 5, 2006Date of Patent: May 26, 2009Assignee: FUJIFILM CORPORATIONInventors: Hideki Maeta, Tadahisa Sato
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Patent number: 7534294Abstract: A process for preparing coated nanoscale quinacridone pigment particles, includes providing a first solution containing a surface additive compound in an acid; adding a quinacridone pigment precursor or crude quinacridone pigment into the first solution and causing the surface additive compound to coat formed nanoscale quinacridone pigment particles; and adding the first solution and coated nanoscale quinacridone pigment particles into a second solution containing deionized water to form a third solution and to precipitate the coated nanoscale quinacridone pigment particles; wherein the surface additive compound is a rosin compound.Type: GrantFiled: April 14, 2008Date of Patent: May 19, 2009Assignee: Xerox CorporationInventors: Roger E. Gaynor, C. Geoffrey Allen
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Publication number: 20090101044Abstract: A method is provided for pigment dispersion. The method includes preparing a solution in which the pigment is dissolved in an organic acid, preparing a reaction liquid capable of decreasing the solubility of the pigment in the solution, and mixing the solution and the reaction liquid in the presence of an additive represented by a General Formula (1) below, CmH2m+1(OCH2CH2)nOH ??(1) wherein m is an integer higher than 14 and lower than 18, and n is an integer equal to or higher than 15 and equal to or lower than 25.Type: ApplicationFiled: October 20, 2008Publication date: April 23, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Takayuki Teshima, Tetsuo Hino
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Publication number: 20090095202Abstract: The invention relates to an aqueous pigment preparation comprising (A) at least one organic and/or inorganic pigment, (B) dispersants and/or surfactants, (C) a trihydric or higher polyhydric alkoxylated alcohol, (D) a polyglycol alkyl ether, (E) if desired, hydrotropic oligomers and/or polymers, (F) if desired, fats, oils or fatty acids, (G) if desired, further additives typical in the preparation of aqueous pigment dispersions, and (H) water.Type: ApplicationFiled: February 28, 2007Publication date: April 16, 2009Applicant: CLARIANT INTERNATIONAL LTD.Inventors: Bjoern Fechner, Uwe Bechtold, Andrea Boehmer
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Patent number: 7503972Abstract: Two or more solutions comprising an organic pigment solution in which an organic pigment is dissolved in a good solvent, and a poor solvent compatible with the good solvent, or a solution of the poor solvent are allowed to flow through a microchannel in a non-laminar state; and organic pigment fine particles are deposited from the organic pigment solution in a course of flowing through the microchannel by changing the solubility of the organic pigment solution with the poor solvent or the solution of the poor solvent. As a result, nanometer-scale monodisperse organic pigment fine particles can be produced in a stable manner.Type: GrantFiled: October 1, 2007Date of Patent: March 17, 2009Assignee: FUJIFILM CorporationInventors: Hideharu Nagasawa, Masato Nakao
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Publication number: 20090020043Abstract: A method for manufacturing a dispersion of a quinoline derivative that is dispersed at a high concentration and has a small particle size. The method includes the steps of preparing a solution by dissolving an N-arylanthranilic acid derivative in an organosulfonic acid, heating the solution and obtaining a reaction liquid in which a quinoline derivative has been produced by a condensation ring-closing reaction, and obtaining a dispersion of the quinoline derivative by mixing the reaction liquid with an aqueous solution. The step of mixing the reaction liquid with an aqueous solution may be performed in a mixing field having a micro-channel.Type: ApplicationFiled: July 16, 2008Publication date: January 22, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Takayuki Teshima, Kazumichi Nakahama, Akira Kuriyama
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Publication number: 20080314285Abstract: A quinacridone derivative according to Formula (I): wherein R1 and R2 are each independently selected from the group consisting of hydrogen, alkyl, and halogen. Also, methods for preparing non-aqueous pigment dispersions and inkjet inks including a pigment and the quinacridone derivative of Formula (I).Type: ApplicationFiled: November 28, 2006Publication date: December 25, 2008Applicant: AGFA GRAPHICS NVInventor: Geert Deroover
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Publication number: 20080305261Abstract: A non-aqueous pigment dispersion includes a quinacridone pigment, a polymeric dispersant, and a dispersion synergist in a non-aqueous dispersion medium wherein the dispersion synergist is a quinacridone derivative substituted on one of the two nitrogen atoms of the quinacridone basic chromophore structure by a group including at least one carboxyl group or a salt thereof. Also, a method for printing an ink-jet image with an ink including the non-aqueous pigment dispersion.Type: ApplicationFiled: November 28, 2006Publication date: December 11, 2008Applicant: AGFA GRAPHICS NVInventors: Geert Deroover, Nicolas Point
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Publication number: 20080295739Abstract: A process for preparing alpha phase quinacridone pigment by ring-closing 2,5-dianilino-terephthalic acid in concentrated polyphosphoric acid, treatment with at least one glycol, followed by striking to water and conditioning the resulting washed pigment with alcohol in the presence of alkali. The resulting pigment is considerably opaque and yellow versus gamma quinacridone of large particle size.Type: ApplicationFiled: May 30, 2007Publication date: December 4, 2008Applicant: SUN CHEMICAL CORPORATIONInventors: Edward H. Sung, Humberto Arnoldo Velasquez, George H. Robertson
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Patent number: 7459017Abstract: Disclosed is a composition and process of manufacture of a stir-in form of pigment with increased dispersing and color properties. Pigment is slurried with acetylenic dispersing agents, wet-milled to a particular particle size, and then dried to powder or granulate form. Also disclosed is a process for producing a pigmented paint composition from the stir-in pigment.Type: GrantFiled: November 15, 2006Date of Patent: December 2, 2008Assignee: Sun Chemical CorporationInventors: Mark Ortalano, Darleen Wright, William Burgess, Brian Thompson
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Patent number: 7427323Abstract: A nanoscale pigment particle composition includes a quinacridone pigment including at least one functional moiety, and a sterically bulky stabilizer compound including at least one functional group, wherein the functional moiety associates non-covalently with the functional group; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale-sized particles.Type: GrantFiled: June 7, 2007Date of Patent: September 23, 2008Assignee: Xerox CorporationInventors: Maria M. Birau, Rina Carlini, C. Geoffrey Allen, Sandra J. Gardner, Karl W. Dawson, Peter G. Odell, Paul F. Smith, Caroline M. Turek, Roger E. Gaynor, Jeffrey H. Banning
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Patent number: 7427322Abstract: A method of producing a dispersion of a pigment, comprising: bringing a solution in which an organic pigment is dissolved, and an aqueous medium, into contact with each other in a channel having an equivalent diameter of 1 mm or less, thereby making the pigment into a fine particle thereof, wherein at least one of the solution and the aqueous medium comprises at least one anionic dispersing agent.Type: GrantFiled: August 13, 2007Date of Patent: September 23, 2008Assignee: FUJIFILM CorporationInventors: Hideki Maeta, Yuki Shimizu, Tadahisa Sato
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Patent number: 7427324Abstract: A nanoscale pigment particle composition includes a quinacridone pigment having at least one functional moiety, and a sterically bulky stabilizer compound having at least one functional group, wherein the functional moiety associates non-covalently with the functional group; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, so as to afford nanoscale-sized particles of the pigment.Type: GrantFiled: November 1, 2007Date of Patent: September 23, 2008Assignee: Xerox CorporationInventors: Maria M. Birau, Rina Carlini, Karl W. Dawson, Sandra J. Gardner, C. Geoffrey Allen, Caroline M. Turek
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Patent number: 7419542Abstract: The invention is directed to a method or use of 2,9-dichloro-quinacridone as an alpha crystal phase inhibitor and optionally, 4,11-dichloroquinacridone during the beta-quinacridone or gamma-quinacridone crude pigment particle size reduction processes. The invention is also directed to solid solutions of quinacridone comprising about 98 to about 80 weight % gamma or beta-quinacridone, about 0.1 to about 10 weight % 2,9-dichloroquinacridone and about 0.1 to about 10 weight % 4,11-dichloroquinacridone.Type: GrantFiled: July 18, 2006Date of Patent: September 2, 2008Assignee: Ciba Specialty Chemicals CorporationInventors: Yingxia He, Colin Dennis Campbell, Gordian Schilling, Rhonda Carter, Melissa Wagner, James Thomas Will, Kevin Rodney Gerzevske
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Patent number: 7399354Abstract: Dispersible pigment granules are produced by mixing an aqueous suspension of an organic pigment with an aqueous emulsion of a wax-like additive. The aqueous emulsion is then allowed to coagulate and the resulting aqueous dispersion is spray dried.Type: GrantFiled: April 27, 2002Date of Patent: July 15, 2008Assignee: Clariant Produkte (Deutschland) GmbHInventors: Hans Joachim Metz, Andreas Stohr, Heinfred Ohleier
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Patent number: 7393404Abstract: A pigment dispersant contains the following component (a) alone or the following components (a) and (b) in combination: Component (a): a composite pigment formed of a diketopyrrolopyrrole pigment having a sulfonic group and another diketopyrrolopyrrole pigment having no sulfonic group, wherein the number of sulfonic group per molecule of the diketopyrrolopyrrole pigments in the composite pigment is from 0.05 to 0.5; and Component (b): a pigment other than the component (a), wherein the pigment has a sulfonic group or its metal salt, ammonium salt or amine salt. Also disclosed are a colored composition for color filters, a process for the fabrication of a color filter, the color filter fabricated by the process, an image display device including the color filter, and an information communication equipment including the image display device.Type: GrantFiled: February 15, 2006Date of Patent: July 1, 2008Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Hiroaki Saikatsu, Hiromitsu Yanagimoto, Naoto Kamata, Kazuhito Ooki, Yutaka Miura, Shigeru Sakamoto, Akio Yoshida, Michiei Nakamura
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Patent number: 7381260Abstract: A thiazineindigo pigment dispersant represented by Formula (1) or (2): where E denotes a basic group. A pigment composition contains a pigment material, and the thiazine indigo pigment dispersant. A colored composition contains the pigment composition and a pigment carrier. A color filter includes a filter segment prepared from the colored composition.Type: GrantFiled: April 18, 2007Date of Patent: June 3, 2008Assignee: Toyo Ink Mfg. Co., Ltd.Inventors: Masayuki Fujiki, Shoko Goto
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Patent number: 7347894Abstract: There is disclosed a pigment dispersant comprises the compound represented by the following formula (I) or a metal salt, ammonium salt, amine salt or alkylammoniumchloride salt thereof. Also disclosed are a colored composition for CF, a process for the fabrication of a CF, the color filter fabricated by the process, an image display device including the color filter, and an information communication equipment including the image display device.Type: GrantFiled: April 6, 2006Date of Patent: March 25, 2008Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Hiromitsu Yanagimoto, Hiroaki Saikatsu, Naoto Kamata, Shigeru Sakamoto, Akio Yoshida, Michiei Nakamura
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Patent number: 7311953Abstract: An object of the present invention is to obtain color filters having a high contrast, a high color purity and an improved transmittance for blue color, and a display using the color filters. In the present invention, there is used a colored composition for color filter comprising at least one coloring agent, a base polymer and at least one solvent, said base polymer containing a polyamicacid whose light transmittance decreases by 2% or less in the visible region (wavelength: 400 nm to 800 nm).Type: GrantFiled: August 11, 2004Date of Patent: December 25, 2007Assignee: Hitachi Displays, Ltd.Inventors: Kotaro Araya, Hiroshi Sasaki, Yasushi Tomioka
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Patent number: 7300511Abstract: Pigment dispersions that when used in printing ink having a relative interfacial tension drop of less than 1.5, and offering an ink viscosity of less than 150 Pa.s, and containing at least 45 wt. % pigment.Type: GrantFiled: July 1, 2005Date of Patent: November 27, 2007Assignee: Sun Chemical CorporationInventors: Gregory T. Huber, Tatiana N. Romanova, Russell J. Schwartz, Lisa Clapp, Terrance R. Chamberlain, Don Henderson
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Patent number: 7252710Abstract: A pigment dispersion composition which can be suitably applied in such fields as color filters, black matrices and ink jet recording where it is necessary to finely disperse pigments still with retention of good dispersion stability and temporal stability even when the total amount a pigment derivative, pigment intermediate, colorant derivative and colorant intermediate, and/or a pigment dispersant is small. Another object is a pigment dispersion-based resist composition which can give color filters high in permeability, excellent in contrast and causing no bleeding or black matrices high in light-shielding and insulating properties, and causing no bleeding.Type: GrantFiled: June 26, 2003Date of Patent: August 7, 2007Assignee: Sakata Inx Corp.Inventors: Masanori Kano, Kazunori Itoh, Takaaki Yodo
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Patent number: 7211139Abstract: This invention relates to a method for production of nanoscale size quinacridones through a wet-salt attrition process by combining a crude quinacridone pigment in the presence of (i) an inorganic salt, (ii) an organic liquid in which the quinacridone pigment and salt are substantially insoluble, and (iii) a quinacridone derivative in an amount less than 10 wt. % relative to the quinacridone pigment; discharging the ground quinacridone pigment into water; adding an acid to produce a solution pH of 1.5 or lower; and isolating the quinacridone pigment.Type: GrantFiled: May 3, 2005Date of Patent: May 1, 2007Assignee: Sun Chemical CorporationInventors: George N. Robertson, Edward H. Sung
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Patent number: 7198667Abstract: Solid pigment preparations containing the following ingredients as substantial components: (A) 60–85 wt. % of at least one organic pigment, (B) 0.1–15 wt.Type: GrantFiled: November 28, 2003Date of Patent: April 3, 2007Assignee: BASF AktiengesellschaftInventors: Ingo Klopp, Juan Antonio Gonzalez Gomez, Uwe Mauthe, Hansulrich Reisacher, Andreas Stohr
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Patent number: 7192477Abstract: The process for producing highly concentrated nanometer-size fine particles of an organic pigment, which comprises dissolving the organic pigment in an amide solvent, especially an organic solvent comprising at least 50 vol % 1-methyl-2-pyrrodinone, and pouring the resultant organic pigment solution with stirring into a poor solvent which is not compatible with the organic pigment. The pigment may be a quinacridone pigment, phthalocyanine pigment etc. Any atmospheric pressure to a sub-critical and/or supercritical state can be employed as the production conditions.Type: GrantFiled: April 2, 2003Date of Patent: March 20, 2007Assignee: Japan Science and Technology AgencyInventors: Hachiro Nakanishi, Koich Baba, Hitoshi Kasai, Hidetoshi Oikawa, Shuji Oikawa
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Patent number: 7166158Abstract: The present invention relates to a novel quinacridone pigment compositions, a process using a mixed amine synthesis for the ultimate production of the compositions and to their use as colorants for pigmenting high molecular weight organic materials.Type: GrantFiled: July 13, 2004Date of Patent: January 23, 2007Assignee: Ciba Specialty Chemicals CorporationInventors: Valentina K. Mitina, Kevin Rodney Gerzevske, Stéphane Biry, Christine Halik
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Patent number: 7160380Abstract: A method of producing a fine particle of an organic pigment, containing the steps of: flowing a solution of an organic pigment dissolved in an alkaline or acidic aqueous medium, through a channel which provides a laminar flow; and changing a pH of the solution in the course of the laminar flow.Type: GrantFiled: September 21, 2004Date of Patent: January 9, 2007Assignee: Fuji Photo Film Co., Ltd.Inventors: Hideki Maeta, Yuki Shimizu, Tadahisa Sato
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Patent number: 7147704Abstract: A pigment dispersing agent wherein a quinophthalone structure is bonded to a triazine structure through an arylene group or a heteroaromatic ring and a basic functional group is bonded to triazine ring through a connecting group which pigment dispersing agent improves an ink or a coating in fluidity and is effective for preparing a product having a low viscosity and low thixotropic properties and having excellent properties such as tinting strength, transparency and viscosity stability with the passage of time, and a pigment composition and a pigment dispersion containing the same.Type: GrantFiled: March 20, 2006Date of Patent: December 12, 2006Assignee: Tokyo Ink Mfg. Co., LtdInventor: Yoshimitsu Ueno
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Patent number: 7147703Abstract: The invention relates to a process for aftertreating organic pigments which comprises heating the unground or ground organic crude pigment in water and/or organic solvents by means of microwave irradiation, under pressure if desired, so that the mass temperature of the mixture reaches 30 to 250° C.Type: GrantFiled: September 16, 2005Date of Patent: December 12, 2006Assignee: Clariant GmbHInventors: Matthias Ganschow, Carsten Plueg
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Patent number: 7135067Abstract: The invention relates to a pigment dispersion consisting essentially of a) at least one organic or inorganic pigment or a combination of the same, b) an alpha-methyl--omega-hydroxy-polyethylene glycol ether having an average molar mass of between 250 and 1000 g/mol, c) standard dispersing agents for producing aqueous pigment dispersions, d) water, and e) optionally other standard additives.Type: GrantFiled: June 29, 2002Date of Patent: November 14, 2006Assignee: Clariant GmbHInventors: Andreas Harz, Lothar Wihan, Martin Alexander Winter, Andreas Pfrengle
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Patent number: 7135062Abstract: Image-recording, hydrophilic colorants having an organic pigment linked to a hydrophilic compound through a linking group and which are capable of forming images excellent in print quality such as chroma, gloss, density, light fastness and abrasion fastness, and also as hydrophilic colorants capable of affording inks excellent in physical properties such as long-term storability and press stability are described.Type: GrantFiled: June 11, 2004Date of Patent: November 14, 2006Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Michiei Nakamura, Hideyuki Koiso, Naoyuki Sakai, Yoshiyuki Zama, Atsushi Nogami, Hiroyuki Shimanaka, Seishichi Sasaki, Hiroaki Saikatsu
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Patent number: 7122081Abstract: The present invention is directed to an aqueous process for reducing particle size of organic pigments by milling the crude pigment in the presence of a water soluble styrene copolymer dispersant, optionally a defoamer, optionally an additive, and greater than about 10 wt. % water, and isolating the organic pigment.Type: GrantFiled: November 12, 2004Date of Patent: October 17, 2006Assignee: Ciba Specialty Chemicals CorporationInventors: Yingxia He, Colin D. Campbell
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Patent number: 7101428Abstract: The invention is directed to a method or use of 2,9-dichloro-quinacridone as a crystal phase inhibitor during the beta-quinacridone or gamma-quinacridone crude pigment particle size reduction processes. 2,9-dichloroquinacridone is added to the milling composition of the crude gamma or crude beta quinacridone.Type: GrantFiled: November 12, 2004Date of Patent: September 5, 2006Assignee: Ciba Specialty Chemicals CorporationInventors: Yingxia He, Colin Campbell, Gordian Schilling, Rhonda Carter
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Patent number: 7077899Abstract: A pigment dispersing agent of the formula (1) capable of providing a printing ink or a coating composition excellent in fluidity and dispersion stability and a dry coating excellent in gloss, a pigment composition containing the same and a pigment dispersion containing the same, wherein X1 is —NH—, —O—, —CONH—, —SO2NH—, —CH2NH—, —CH2NHCOCH2NH— or —X3—Y—X4—, X2 and X4 are —NH— or —O—, X3 is —CONH—, —SO2NH—, —CH2NH—, —NHCO— or —NHSO2—, Y is an alkylene group, an alkenylene group or an arylene group, Z is —SO3M or —COOM, R1 is a heterocyclic ring residue or an aromatic ring residue, Q is —O—R2, —NH—R2, a halogen group, —X1—R1 or —X2—Y-Z, R2 is a hydrogen atom, an alkyl group or an alkenyl group, and M is one equivalent of a monovalent to trivalent cation.Type: GrantFiled: January 14, 2004Date of Patent: July 18, 2006Assignee: Toyo Ink Mfg. Co. Ltd.Inventors: Takashi Kamikubo, Daisuke Tanabe, Tetsuya Sai
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Patent number: 7074267Abstract: Pigment composition comprising an organic pigment and a combination of at least two normally water-soluble coloured compounds (dyes) of opposing charge, i.e. of at least one anionic and one cationic dye are provided. The compositions impart improved rheology on non-aqueous pigment based printing inks and paints.Type: GrantFiled: April 24, 2003Date of Patent: July 11, 2006Assignee: Ciba Specialty Chemicals CorporationInventors: Stephen John Coughlin, Iain Frank Fraser, Thomas Healy, Stuart Cook Niven
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Patent number: 7074268Abstract: A pigment composition obtainable by dry-milling an organic pigment in the presence of a resin for a printing ink, the resin being composed of a synthetic resin for a printing ink in an amount of 10 to 80 parts by weight per 100 parts by weight of the organic pigment and an aliphatic hydrocarbon resin which is extracted from gilsonite and has a softening point of 120 to 125° C. in an amount of 0.1 to 5 parts by weight per 100 parts by weight of the organic pigment.Type: GrantFiled: November 23, 2004Date of Patent: July 11, 2006Assignee: Toyo Ink Mfg. Co., Ltd.Inventors: Ippei Imagawa, Ataru Chiba, Takahiro Yuasa
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Patent number: 7056378Abstract: The invention relates to a method for producing vattable organic pigments. The invention is characterized in that an agueous or an aqueous-organic suspension of a coarse crystalline raw mineral is vatted and re-oxidised, and the pigment suspension is ground to a diameter equal to or less than 0.9 mm during vatting and/or during oxidation by means of an agitator ball mill, which is operated at a power density of more than 1.0 KW per litre per grinding chamber and at an agitator peripheral speed of more than 12 m/s, using grinding bodies.Type: GrantFiled: March 17, 2003Date of Patent: June 6, 2006Assignee: Clariant GmbHInventors: Joachim Weber, Manfred Urban, Erwin Dietz
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Patent number: 7041166Abstract: Organic solid solution pigments are prepared and conditioned by treating a mixture of their components, after synthesis but preferably without or with only partial drying, in a mixture of from 0 to 30% by weight of an organic liquid having a dipole moment ? of 2.8–6.0·10?18 .esu (2.8 to 6.0 debye units) and from 70 to 100% by weight of water in an agitated media pearl mill having a specific power density of at most 2.0 kj·s?1 per liter of grinding space. Drying the starting components is especially suitable in the case of only slightly agglomerating, easy to wet pigments of specific surface area from 1 to 25 m2/g. The method gives excellent results, and is flexible and also much simpler than known methods.Type: GrantFiled: January 23, 2003Date of Patent: May 9, 2006Assignee: Ciba Specialty Chemicals CorporationInventors: Philippe Bugnon, Marc Maurer
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Patent number: 7033429Abstract: The present invention relates to a method of producing a low-dust pigment composition, which comprises suspending a filter cake obtained from preparation of the pigment, or a solid pigment, in water, adding thereto from 0.1 to 6.0% by weight, based On the weight of the pigment composition, of an amphoteric surfactant and, where appropriate, further adjuvants, and then drying the aqueous suspension to form granules, to the pigment composition obtainable according to that method, and to the use thereof in the production of colored plastics or colored polymeric particles.Type: GrantFiled: October 22, 2002Date of Patent: April 25, 2006Assignee: Ciba Specialty Chemicals CorporationInventor: Paolo Balliello
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Patent number: 7029526Abstract: The invention pertains to the field of green color filters and LCDs. It has been found that pigments with surprisingly improved coloristic, chemical and physical properties are obtained by salt-kneading a halogenated phthalocyanine pigment together with a yellow pigment of the disazo condensation, barbituric acid or azoquinolone series. The process takes place in the presence of an organic liquid and in the absence of binder or optionally in the presence of a relatively small amount of binder. Claimed are the process itself as well as the green pigment composition obtained by the process and compositions comprising it.Type: GrantFiled: October 10, 2002Date of Patent: April 18, 2006Assignee: Ciba Specialty Chemicals CorporationInventors: Véronique Hall-Goulle, Takashi Deno
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Patent number: 7008475Abstract: The invention relates to aqueous colorant preparations containing A) between 0.1 and 50 wt. % of at least one organic and/or inorganic pigment and/or at least one organic colorant. B) between 0.01 and 80 wt. % of at least one naphthol-oxyalkylate sulfopropyl ether, one alkanol-oxyalkylate sulfopropyl ether or one alkylphenol-oxyalkylate sulfopropyl ether. C) between 0 and 30 wt. % of at least one organic solvent. D) between 0 and 20 wt. % of other standard derivatives and E) between 10 and 90 wt % of water, respectively in relation to the total weight (100%) of the colorant preparation. The colorant preparation is used, for example, in printing inks, especially ink jet printing inks.Type: GrantFiled: June 21, 2002Date of Patent: March 7, 2006Assignee: Clariant GmbHInventors: Rudolf Randler, Ulrike Rohr, Josef Geisenberger, Ruediger Baur, Hans-Tobias Macholdt, Heidemarie Menzel