Ring Containing Atom Other Than Carbon Patents (Class 106/498)
-
Publication number: 20040206271Abstract: 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: ApplicationFiled: January 8, 2004Publication date: October 21, 2004Inventors: Rudolf Randler, Ulrike Rohr, Josef Geisenberger, Ruediger Baur, Hans-Tobias Macholdt, Heidemarie Menzel
-
Publication number: 20040206269Abstract: The present invention relates to methods of preparing modified organic colorant dispersions comprising the step of combining, in any order, i) an organic colorant; ii) an hydroxide reagent; and iii) an aqueous medium, to form a modified organic colorant dispersion. The methods further comprises a particle size reduction step. These steps can occur in either order. The organic colorant comprises at least one organic species having at least one carboxylic acid group. Modified organic colorants and uses of these modified organic colorants, including inkjet ink compositions, are also disclosed.Type: ApplicationFiled: April 16, 2003Publication date: October 21, 2004Inventor: Yuan Yu
-
Publication number: 20040206275Abstract: The present invention relates to methods of preparing modified organic colorant dispersions comprising the step of combining, in any order, i) an organic colorant; ii) an hydroxide reagent; and iii) an aqueous medium, to form a modified organic colorant dispersion. The methods further comprises a particle size reduction step. These steps can occur in either order. The organic colorant comprises at least one organic species having at least one ester group. Modified organic colorants and inkjet ink compositions are also disclosed.Type: ApplicationFiled: April 16, 2003Publication date: October 21, 2004Inventor: Alex I. Shakhnovich
-
Patent number: 6806368Abstract: Perylene-3,4:9,10-tetracarboxylic diimides of the general formula I where R1, R2, R3 and R4 are independently hydrogen, chlorine, bromine or substituted or unsubstituted aryloxy, arylthio, arylamino, hetaryloxy or hetarylthio; R5, R6, R7, R8, R9 and R10 are independently hydrogen or long-chain alkyl, alkoxy or alkylthio whose carbon chain may in each case contain up to four double bonds, with the proviso that at least four of these radicals are not hydrogen are prepared and used as liquid-crystalline materials for electronic, optoelectronic and photonic applications, for coloration of macromolecular organic and of inorganic materials, as fluorescent dyes and as laser dyes and also as organic materials for solar collectors and electroluminescence applications.Type: GrantFiled: February 11, 2003Date of Patent: October 19, 2004Assignee: BASF AktiengesellschaftInventors: Frank Würthner, Christoph Thalacker
-
Publication number: 20040200388Abstract: Perylene derivatives of the general formula I 1Type: ApplicationFiled: May 6, 2004Publication date: October 14, 2004Applicant: BASF AktiengesellschaftInventors: Claus Hackmann, Paul Gunthert, Anton Dotter, Peter Blaschka
-
Patent number: 6800127Abstract: The present invention relates to pigment preparations comprising polyamide particles with an average particle size of below 50 &mgr;m and a pigment of an average particle size below 0.2 &mgr;m. The inventive pigment preparations are useful for coloring high molecular weight material, like coatings, inks and in particular plastics like polyvinyl chloride, polyamide, polyester, polycarbonate and, especially polyamide fibers.Type: GrantFiled: April 29, 2003Date of Patent: October 5, 2004Assignee: Ciba Specialty Chemicals CorporationInventor: Fridolin Bäbler
-
Patent number: 6786965Abstract: An aqueous organic pigment dispersion used to integrally color concrete and other building materials which includes: alkali metal silica particles as a binder; organic pigment; water; and dispersing agent in an amount effective to disperse the organic pigment and the binder in the water. A method for preparing the aqueous organic pigment dispersion includes (i) mixing, at 3,000 to 10,000 rpm, alkali metal silica particles; organic pigment; and dispersing agent, thereby forming a dispersion premix; (ii) milling the dispersion precursor in a mixer filled with glass beads for a period of time sufficient to reduce the particle size of the organic pigment to about 100 to about 300 nanometers, thereby forming a non-standardized dispersion; and (iii) standardizing the dispersion against a color standard by adding water.Type: GrantFiled: September 9, 2002Date of Patent: September 7, 2004Assignee: Sun Chemical CorporationInventors: Charles W. Perry, Donald C. Dulaney, James Moore
-
Patent number: 6784231Abstract: A pigment having weak dispersion force to be readily dispersed in a medium to be colored from which an excellent yellow image having superior transparency can be produced. The pigment includes a compound having the same chemical formula as C.I. Pigment Yellow 180. The BET specific surface area based on the nitrogen absorption process of the pigment is 20-100 m2/g, and the ratio of the absolute strength of X-ray diffraction at Bragg angle 2&thgr;=17.5°±0.2° to the absolute strength of X-ray diffraction at Bragg angle 2&thgr;=18.2°±0.2° of the pigment in a powder X-ray diffraction diagram using a CuK&agr; characteristic X-ray is less than 1.8/1.0. The present invention also provides a dispersion including the pigment and a thermoplastic resin having excellent transparency and color strength.Type: GrantFiled: March 19, 2002Date of Patent: August 31, 2004Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Katsunori Shimada, Junko Sunouchi
-
Publication number: 20040159265Abstract: The present application relates to a process for the manufacture of pigmented vitreous materials, as well as to pigmented vitreous materials, characterized by the use of soluble pigment precursors and preferably the absence of significant amounts of dispersants. These pigmented vitreous materials can be used as coloured materials for any known purposes.Type: ApplicationFiled: February 4, 2004Publication date: August 19, 2004Inventors: Patrice Bujard, Veronique Hall-Goulle, Zhimin Hao, Hitoshi Nagasue, Gerardus De Keyzer
-
Publication number: 20040138349Abstract: A mixture of an organic nanosize pigment comprising of from 50 to 99% by weight of the nanosize pigment and 1 to 50% by weight based of a low molecular weight naphthalene sulfonic acid formaldehyde polymer and its use as a particle growth and crystal phase director for the preparation of a direct pigmentary organic pigment or in pigment finishing.Type: ApplicationFiled: November 14, 2003Publication date: July 15, 2004Inventor: Fridolin Babler
-
Publication number: 20040138340Abstract: The present invention relates to surface-treated pigments of formula (I), wherein Ar1 and Ar2 are each independently of the other a phenyl or naphthalene group, n1 and n2 denote a value from 0 to 0.15, the sum of n1 and n2 being a value from 0.01 to 0.Type: ApplicationFiled: October 30, 2003Publication date: July 15, 2004Inventors: Philippe Bugnon, Caroline Sansonnens
-
Patent number: 6746524Abstract: Disclosed is a process for producing a sintered color pencil lead characterized by pigmenting a white or light-colored porous sintered pencil lead with an organic pigment by treating said porous sintered pencil lead with a solution of at least one compound of the following Formula (I) to be filled with said compound and then by forming said organic pigment within the pores by means of heating, A(B)x in which 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 series, phthalocyanine or diketopyrrolopyrrole which is attached to x groups B via one or more heteroatoms selected from the group consisting of N, O and S and forming part of the radical A, B is hydrogen or a group of the formula where at least one group B is not hydrogen and, if x is 2 to 8, all the groups B can be identical or different, and L is any suitable solubilizing group.Type: GrantFiled: November 28, 2001Date of Patent: June 8, 2004Assignee: Mitsubishi Pencil Kabushiki KaishaInventor: Katsunori Kitazawa
-
Patent number: 6736892Abstract: The present invention provides sulfated and carboxymethylated surfactants and dispersants produced by reacting a styrenated phenol alkoxylate with sulfamic acid and then neutralizing with a base such as ammonium hydroxide. The instant invention also provides pigment dispersion comprising: (a) a pigment; and (b) a dispersant based on sulfated and carboxymethylated styrenated phenol alkoxylates. Carbon black dispersions are also provided containing carbon black and the dispersants of the invention.Type: GrantFiled: July 16, 2002Date of Patent: May 18, 2004Assignee: Ethox Chemicals LLCInventors: Edward R. Godwin, Paul David Weipert
-
Patent number: 6726762Abstract: A finely divided pigment is formed of an aggregate of primary particles. A number of primary particles of not greater than 0.1 &mgr;m in particle size is at least 95% of an entire number of the primary particles, and a number of primary particles of greater than 0.1 &mgr;m in particle size is at most 5% of the entire number of the primary particles. The finely divided pigment can be produced by grinding a parent pigment (pre-division pigment) together with a water-soluble inorganic salt and a water-soluble organic solvent in a grinding machine at a temperature of from 30 to 90° C. for 2 to 6 hours under a load, and then removing the water-soluble inorganic salt and the water-soluble organic solvent. A coloring composition comprises a dispersing medium and the finely divided pigment dispersed in the dispersing medium.Type: GrantFiled: June 27, 2002Date of Patent: April 27, 2004Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Hisao Okamoto, Yutaka Nakagawa, Yoshiyuki Zama, Koji Tsuchiya, Shotoku Takami, Yoshio Abe, Michiei Nakamura
-
Patent number: 6723161Abstract: A method for oxidizing an organic pigment including dispersing the pigment in an aqueous medium and exposing the dispersed pigment to ultrasonic radiation, whereby the exposed pigment exhibits from 3 to 10 microequivalents of carboxylic acid, or salts thereof, per square meter of pigment surface.Type: GrantFiled: November 18, 2002Date of Patent: April 20, 2004Assignee: Rohm and Haas CompanyInventors: Eric Jon Langenmayr, Richard Shu-Hua Wu
-
Patent number: 6719839Abstract: Ready-to-use water dispersible pigment compositions containing waer-insoluble, hydrophilic pigments are provided. The compositions comprise a stable dispersion of the pigment such as a porphyrin pigment, carmine, curcumin and a carotenoid in the form of bodies of an average size which is at the most 10 &mgr;m is provided. The pigment bodies are dispersed without the use of a surface active substance in an aqueous phase comprising a hydrocolloid. The natural pigment compositions which are useful for coloring of food products and pharmaceuticals do not migrate in the products and they are acid stable. The compositions are useful in coating compositions for tablets and dragees.Type: GrantFiled: August 19, 2002Date of Patent: April 13, 2004Assignee: CHR. Hansen A/SInventors: Per Pihlmann Isager, Marianne Winning
-
Publication number: 20040060478Abstract: The invention relates to the novel pigment dispersants of the formula (I), wherein Q1 is a group of an organic pigment selected from the group of the perinone, quinacridone, quinacridonequinone, anthanthrone, indanthrone, dioxazine, diketopyrrolopyrrole, indigo, thioindigo, thiazine indigo, isoindoline, isoindolinone, pyranthrone, isoviolanthrone, flavanthrone or anthrapyrimidine pigments; s is a number of from 1 to 5; n is a number of from 0 to 4; the sum of s and n being 1 to 5, and to pigment preparations. Said pigment preparations are characterized by a content of at least one organic pigment and one pigment dispersant of the formula ((I), wherein Q1 is a group of an organic pigment selected from the group of phthalocyanine, azo, benzimidazolone, disazocondensation, perinone, quinacridone, quinacridonequinone, anthanthrone, indanthrone, dioxazine, diketopyrrolopyrrole, indigo, thioindigo, thiazine indigo, isoindoline, isoindolinone, pyranthrone, isoviolanthrone, flavanthrone or anthrapyrimidine pigments.Type: ApplicationFiled: August 8, 2003Publication date: April 1, 2004Inventors: Joachim Weber, Gerhard Wilker, Klaus Brychcy, Erwin Dietz
-
Patent number: 6709507Abstract: A method of producing self dispersible organic pigment particles stabilized by the method. The method includes modifying organic pigment particles and then contacting the surface modified particles with an aqueous vapor entrained in a carrier gas to produce the stabilized organic pigment particles. Typically the pigment particles are modified by exposing their surfaces to ozone or a plasma-activated process gas. The surface stabilizing method prevents the violent exothermic reaction, which occurs when surface modified pigment particles are exposed to ambient air. The method is accomplished in a device, which includes a reactor, means for introducing in the reactor aqueous vapor entrained in a carrier gas and an agitator assembly for deagglomerating during surface modification the pigment particles placed in the reactor.Type: GrantFiled: August 23, 2002Date of Patent: March 23, 2004Assignee: E. I. du Pont de Nemours and CompanyInventors: An-Gong Yeh, Sandra L. Witman, James L. Hohman
-
Publication number: 20040050298Abstract: Organic pigments are conditioned by treating them, after synthesis but preferably without or with only partial drying, in a mixture of from 1 to 30% by weight of a neutral, polar liquid having a dipole moment &mgr; of 2.8-6.0? 10−18 esu (2.8 to 6.0 debye units) and from 70 to 99% by weight of water in an agitated media pearl mill having a specific power density of at most 2.0 kjs7−1 per litre of grinding space. Drying 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: ApplicationFiled: July 15, 2003Publication date: March 18, 2004Inventors: Gerhard Giger, Jurgen Beyrich, Philippe Bugnon, Marc Maurer
-
Patent number: 6702883Abstract: The present invention is directed to a yellow ink which can realize images possessing excellent color reproduction and waterfastness. Images possessing very excellent color reproduction and lightfastness can be realized by using a yellow ink composition comprising C.I. Pigment Yellow 128 and C.I. Pigment Yellow 110 as a colorant, or by using a yellow ink set comprising a first yellow ink composition containing C.I. Pigment Yellow 128 and a second yellow ink composition containing C.I. Pigment Yellow 110.Type: GrantFiled: June 27, 2001Date of Patent: March 9, 2004Assignee: Seiko Epson CorporationInventors: Tsuyoshi Sano, Kiyohiko Takemoto
-
Patent number: 6699319Abstract: The present invention relates to a process for preparing a polymer-modified pigment comprising the step of: combining, in any order, at least one pigment having attached at least one nucleophilic group, at least one polymer comprising at least one carboxylic acid group or salt thereof, and at least one coupling agent. At least one mediator compound may also be used. The modified pigments can be used in applications such as inkjet ink applications.Type: GrantFiled: May 6, 2002Date of Patent: March 2, 2004Assignee: Cabot CorporationInventors: Curtis E. Adams, Ronald J. Gambale
-
Patent number: 6692562Abstract: This invention relates to a process of preparing a 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-C16 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.Type: GrantFiled: March 8, 2002Date of Patent: February 17, 2004Assignee: Sun Chemical CorporationInventor: Gregory R. Schulz
-
Publication number: 20040016370Abstract: Fluorescent functional dyes represented by the following formulas: 1Type: ApplicationFiled: July 26, 2002Publication date: January 29, 2004Applicant: 3M Innovative Properties CompanyInventor: David B. Olson
-
Publication number: 20030217672Abstract: Processes for preparing modified pigments are described. In one embodiment, the process comprises the step of combining, in any order, a pigment having attached an electrophilic group and a thiol reagent comprising at least one —SH group and at least two ionic or ionizable groups. In a second embodiment, the process comprises the step of combining, in any order, a pigment having attached an electrophilic group and a thiopolymer comprising at least one —SH group. Modified pigments are also described.Type: ApplicationFiled: May 10, 2002Publication date: November 27, 2003Inventor: Paul S. Palumbo
-
Patent number: 6646126Abstract: The present invention provides a process for preparing transparent perylimide pigments of the formula (I): in which u is a number from 0 to 8 and, if u>0, E is a chlorine or bromine atom and, where u>1, may be a combination thereof, which comprises wet-grinding a crude perylimide pigment in a liquid medium in a stirred ballmill operated at a power density of from 1.0 kW per liter of milling space and at a stirrer tip speed of more than 12 m/s under the action of grinding media having a diameter of less than or equal to 0.9 mm, and isolating the resulting pigment.Type: GrantFiled: December 18, 2002Date of Patent: November 11, 2003Assignee: Clariant GmbHInventors: Joachim Weber, Gerhard Wilker, Manfred Urban, Martin Böhmer, Erwin Dietz
-
Publication number: 20030205171Abstract: The present invention relates to a process for preparing a polymer-modified pigment comprising the step of: combining, in any order, at least one pigment having attached at least one nucleophilic group, at least one polymer comprising at least one carboxylic acid group or salt thereof, and at least one coupling agent. At least one mediator compound may also be used. The modified pigments can be used in applications such as inkjet ink applications.Type: ApplicationFiled: May 6, 2002Publication date: November 6, 2003Inventors: Curtis E. Adams, Ronald J. Gambale
-
Patent number: 6641656Abstract: The present invention describes a dispersion comprising a vehicle and a modified pigment. The modified pigment has, when measured in an aqueous medium, a zeta potential of 0.0 mV at a pH of between 5.0 and 11.0. Inkjet ink compositions and an inkjet consumable set are also disclosed.Type: GrantFiled: October 17, 2001Date of Patent: November 4, 2003Assignee: Cabot CorporationInventors: Yuan Yu, Paul S. Palumbo
-
Publication number: 20030188664Abstract: Disclosed is a process for the preparation of a pigment dispersion starting with a tank flushed pigment that is continuously fed into a twin screw extruder, washed and dried by vacuum to get a desirable product.Type: ApplicationFiled: April 5, 2002Publication date: October 9, 2003Inventors: Kalpathy R. Anantharaman, Michael L. Lewis, Pat Galioto
-
Publication number: 20030172847Abstract: Quinophthalone derivatives have the general formula I 1Type: ApplicationFiled: December 30, 2002Publication date: September 18, 2003Inventors: Jianing He, Manfred Schrck
-
Patent number: 6620235Abstract: Compositions comprising a) a mixture of i) C.I. Pigment Violet 19 together with either C.I. Pigment Blue 15 or C.I. Pigment Blue 60, or ii) C.I. Pigment Red 177 together with either C.I. Pigment Blue 15 or C.I. Pigment Blue 60, and b) a dispersant, c) optionally a biocide, and d) water. A process for shading of paper using said compositions or by applying separate pigment dispersions of a) C.I. Pigment Violet 19 and either C.I. Pigment Blue 15 or C.I. Pigment Blue 60, or b) C.I. Pigment Red 177 and either C.I. Pigment Blue 15 or C.I. Pigment Blue 60.Type: GrantFiled: January 9, 2002Date of Patent: September 16, 2003Assignees: Ciba Specialty Chemicals Corporation, Stora Enso ABInventors: Ian William Knowles, Robert Watsfeldt, Kjell Erik Kumlin
-
Publication number: 20030170395Abstract: The present invention refers to a mixing scheme containing a plurality of pigmented base paint compositions having defined colors and optionally one or more non-pigmented base paint compositions comprising at least one rheology controlled base paint composition containing at least one pigment selected from the group consisting of inorganic pigments, di-keto-pyrrolo-pyrrole type pigments, organic liquid crystal type pigments and carbon black and having the following rheology profileType: ApplicationFiled: January 27, 2003Publication date: September 11, 2003Inventors: William James Highcock, Graham Stuart Kay, David Robert Fenn
-
Patent number: 6616750Abstract: Ternary pigment compositions of compounds of formulae (I), (II) and (III) obtainable by reaction of succinic acid diesters with from 90 to 15 mol % 4-methylbenzonitrile and from 10 to 85 mol % 3-methylbenzonitrile, the molar amounts of the benzonitriles totalling 100 mol %, a process for the preparation thereof, and the use thereof for pigmenting organic material.Type: GrantFiled: September 12, 2002Date of Patent: September 9, 2003Assignee: Ciba Specialty Chemicals CorporationInventors: Roman Lenz, Olof Wallquist, Ingo Schlöder
-
Publication number: 20030164118Abstract: Organic pigments are conditioned by introducing a liquid prepigment suspension into a miniaturized continuous reactor and thermally treating therein.Type: ApplicationFiled: March 31, 2003Publication date: September 4, 2003Applicant: Clariant Finance (BVI) LimitedInventors: Uwe Nickel, Klaus Kund, Erwin Dietz, Joachim Webber, Olaf Schupp
-
Publication number: 20030162976Abstract: The invention provides novel pigment dispersants of the formula (I) 1Type: ApplicationFiled: February 27, 2003Publication date: August 28, 2003Inventors: Joachim Weber, Felix Wendelin Grimm, Erwin Dietz
-
Publication number: 20030162977Abstract: The invention provides novel pigment dispersants of the formula (I) 1Type: ApplicationFiled: February 27, 2003Publication date: August 28, 2003Inventors: Joachim Weber, Felix Wendelin Grimm, Erwin Dietz
-
Patent number: 6602342Abstract: C.I. Pigment Yellow 191 is obtained in new crystal polymorphs (beta, gamma, delta and epsilon phases) if the known alpha phase or another inventive phase of this pigment is treated with certain solvents and reprecipitated.Type: GrantFiled: July 2, 2001Date of Patent: August 5, 2003Assignee: Clariant GmbHInventors: Martin U. Schmidt, Arpad Acs, Rüdiger Jung, Franz Schui
-
Patent number: 6596071Abstract: Organic and inorganic composite pigments having an average particle diameter of 0.01 to 10.0 &mgr;m composed of a white inorganic particle, an organosilane compound obtained from alkoxysilanes, or polysiloxanes coating on the white inorganic particle, and an organic pigment coat formed on said coating. An ultraviolet light-absorbing agent is present in any portion from the surface of the white inorganic particle to surface of the organic pigment coat. These composite pigments have reduced amounts of organic pigments desorbed from their surface and exhibit excellent light resistance due to their ultraviolet absorbing property.Type: GrantFiled: June 11, 2002Date of Patent: July 22, 2003Assignee: Toda Kogyo CorporationInventors: Kazuyuki Hayashi, Keisuke Iwasaki, Mineko Ohsugi, Yusuke Shimohata, Hiroko Morii
-
Patent number: 6596073Abstract: The invention relates to a solid pigment composition comprising a) at least one pigment, b) at least one compound selected from the group consisting of b0) a phenol-styrene-polyglycol ether or an ionically modified phenol-styrene-polyglycol ether, b1) a condensation product prepared from b1A) sulphonated aromatics b1B) aldehydes and/or ketones and b1C) optionally one or more compounds selected from the group of unsulphonated aromatics, urea and urea derivatives, and b2) phosphoric acid, phosphonic acid and derivatives thereof, and c) at least one organic thickener.Type: GrantFiled: August 6, 2001Date of Patent: July 22, 2003Assignee: Bayer AktiengesellschaftInventors: Peter Roger Nyssen, Josef Witt
-
Publication number: 20030127023Abstract: The invention relates to a process for preparing pigments, which comprisesType: ApplicationFiled: December 4, 2002Publication date: July 10, 2003Inventors: Yves Grandidier, Albert Riegler, Klaus Ruf, Urs Schlatter, Takashi Deno
-
Patent number: 6589330Abstract: Disclosed herein is a green pigment composition comprising (a) a green pigment comprising a mixture of fine particles of a halogen-free blue pigment and fine particles of a halogen-free yellow pigment and (b) a halogen-free pigment derivative. Since the green pigment composition of the present invention does not generate the harmful substances such as dioxin and PCB at the time of burning processing, it is environmentally friendly, sanitary, easily recycled, excellent in light resistance and heat resistance and has the hue of clearness.Type: GrantFiled: December 26, 2001Date of Patent: July 8, 2003Assignee: TOYO INK Mfg. Co., Ltd.Inventors: Shigeki Kato, Kosaku Tsuji
-
Patent number: 6582509Abstract: The invention relates to a method for preparing an organic pigment from starch, and the pigment thus received. According to the invention, starch granules are swollen to increase their volume and plasticity, their stability towards changes in volume and shape is improved by cross-linking, by derivatization, or by making the surface hydrophobic, after which gas bubbles or cavities are formed inside the granules, these bubbles or cavities having a strong light scattering effect. Generating bubbles or cavities can be performed by evaporating water or another liquid, by releasing impregnated gas, by a gas generating reaction, or by displacing absorbed water with a solvent. The product is useful as a white pigment especially in coating of starch, in paints and in cosmetic products.Type: GrantFiled: April 24, 2002Date of Patent: June 24, 2003Assignee: Aveno OyInventors: Yrjö Mälkki, Reko Lehtilä
-
Patent number: 6582510Abstract: A pigment dispersion suitable for use in the manufacture of pigmented coating compositions is provided. The pigment dispersion comprises a) pigment, b) carrier, and c) an acrylic/polyether comb-branched copolymer dispersant wherein the polyether portion of the copolymer is free of any acidic groups. A method of making a present dispersion is also provided. The method comprises mixing together, in any combination: a) pigment, b) carrier, and c) an acrylic/polyether comb-branched copolymer dispersant wherein the polyether portion of the copolymer is free of any acidic groups. A pigmented coating composition is also provided comprising a pigment dispersion made in accordance with present invention.Type: GrantFiled: April 16, 2002Date of Patent: June 24, 2003Assignee: ARCO Chemical Technology, L.P.Inventor: Steven A. Schwartz
-
Patent number: 6582508Abstract: The invention provides a process for the fine division of pigments which comprises spraying a coarsely crystalline crude pigment and/or a poorly dispersible prepigment in suspension form 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: GrantFiled: October 5, 2001Date of Patent: June 24, 2003Assignee: Clariant GmbHInventors: Erwin Dietz, Joachim Weber, Dieter Schnaitmann, Christian Wille, Leonhard Unverdorben
-
Publication number: 20030106463Abstract: Perylene derivatives of the general formula I 1Type: ApplicationFiled: September 11, 2002Publication date: June 12, 2003Inventors: Claus Hackman, Paul Gunthert, Anton Dotter, Peter Blaschka
-
Publication number: 20030105325Abstract: The present invention provides a process for preparing transparent perylimide pigments of the formula (I) 1Type: ApplicationFiled: December 18, 2002Publication date: June 5, 2003Applicant: Clariant GmbHInventors: Joachim Weber, Gerhard Wilker, Manfred Urban, Martin Bohmer, Erwin Dietz
-
Patent number: 6565642Abstract: The pigment dispersion liquid is produced using at least a pigment, liquid medium, and a dispersant, as follows. That is, a mixture consisting of at least the pigment, liquid medium and the dispersant is held under a pressure which is less than the atmospheric pressure and then the mixture is held under a pressure equal to or higher than the atmospheric pressure. Finally, dispersion is carried out.Type: GrantFiled: August 31, 2001Date of Patent: May 20, 2003Assignee: Ricoh Company, Ltd.Inventors: Keishi Taniguchi, Shigeo Hatada
-
Publication number: 20030089280Abstract: Ternary pigment compositions of compounds of formulae (I), (II) and (III) 1Type: ApplicationFiled: September 12, 2002Publication date: May 15, 2003Inventors: Roman Lenz, Olof Wallquist, Ingo Schloder
-
Patent number: 6562121Abstract: Organic pigments are conditioned by introducing a liquid prepigment suspension into a miniaturized continuous reactor and thermally treating therein.Type: GrantFiled: June 27, 2001Date of Patent: May 13, 2003Assignee: Clariant Finance (BVI) LimitedInventors: Uwe Nickel, Klaus Kund, Erwin Dietz, Joachim Weber, Olaf Schupp
-
Patent number: 6562117Abstract: There is provided a method for regulating the average particle diameter of a pigment for an ink composition possessing excellent anti-clogging properties and ejection stability. The method comprises the steps of: dispersing the pigment in a solvent to prepare a stock pigment dispersion; and subjecting the stock pigment dispersion to crossflow membrane filtration.Type: GrantFiled: September 13, 2001Date of Patent: May 13, 2003Assignee: Seiko Epson CorporationInventors: Tsuyoshi Sano, Teruhito Kojima
-
Patent number: RE38469Abstract: A process for the manufacture of a pigment concentrate which comprises dispersing dry organic pigment granules in an organic vehicle.Type: GrantFiled: October 9, 2001Date of Patent: March 23, 2004Assignee: Ciba Specialty Chemicals CorporationInventors: James McGeachie McCrae, Eric William Gilmour, Jean-Luc Schwitguebel