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| Number | Title | Issue Date |
| 7427322 | Organic pigment fine-particle, and method of producing the same 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... | 09/23/2008 |
| 7427323 | Quinacridone nanoscale pigment particles 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 fu... | 09/23/2008 |
| 7427324 | Methods of making quinacridone nanoscale pigment particles 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 function... | 09/23/2008 |
| 7419542 | 2,9-dichloro-quinacridone as α-quinacridone crystal phase inhibitor 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 ... | 09/02/2008 |
| 7393404 | Pigment dispersants and their use 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 pigmen... | 07/01/2008 |
| 7381260 | Thiazineindigo pigment dispersant, and pigment composition, colored composition and color filter, using the same 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 cont... | 06/03/2008 |
| 7347894 | Pigment dispersants and their use 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 fabric... | 03/25/2008 |
| 7335771 | Quinacridone derivatives as labelling reagents for fluorescence detection of biological materials Disclosed are new quinacridone dye derivatives having characteristic fluorescence lifetimes. Also disclosed are methods for labelling target biological materials employing the quinacridone dyes and use of the labelled materials in biological assays. The quinacridone... | 02/26/2008 |
| 7311769 | Pigment compositions consisting of a yellow disazo pigment and an organic pigment A pigment composition containing a disazo pigment of formula (I) and at least one pigment from the group of organic orange, red and violet pigments ... | 12/25/2007 |
| 7311953 | Colored composition for color filter and display using color filters formed of the colored composition 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 fil... | 12/25/2007 |
| 7270700 | Magenta dyes and inks for use in ink-jet printing A composition comprising: (a) a compound of Formula (1) wherein: R1, R2, R3 and R4 independently are substituents; ... | 09/18/2007 |
| 7252710 | Pigment dispersion composition, use thereof and compound for pigment treatment 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 ... | 08/07/2007 |
| 7211139 | Process for preparing nanoscale quinacridone 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 sa... | 05/01/2007 |
| 7198667 | Solid pigment preparations containing pigment derivatives and surface-active additives 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. % of at least one pigment derivative of general formula I wherein the variables have the following meanings... | 04/03/2007 |
| 7192477 | Process for producing pigment nanoparticle 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 ... | 03/20/2007 |
| 7166158 | Quinacridone pigment compositions comprising unsymmetrically substituted components 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. ... | 01/23/2007 |
| 7160380 | Organic pigment fine-particle, and method of producing the same 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 th... | 01/09/2007 |
| 7161007 | Oxidation process for preparing quinacridone pigments The present invention relates to a process of preparing quinacridone by oxidizing a 6,13-dihydroquinacridone salt corresponding to the quinacridone pigment with hydrogen peroxide as the oxidizing agent in the presence of 2,7-anthraquinone disulfonic acid as catalyst... | 01/09/2007 |
| 7147703 | Pigment finishing by microwave heating 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 ... | 12/12/2006 |
| 7147704 | Pigment dispersing agent, pigment composition and pigment dispersion 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 improv... | 12/12/2006 |
| 7135067 | Water-based pigment dispersions, the production thereof and the use of the same 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,... | 11/14/2006 |
| 7135062 | Hydrophilic coloring matter for recording image, aqueous coloring agent for recording image, method and device for recording image 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 als... | 11/14/2006 |
| 7122081 | Process for aqueous milling of quinacridone pigments 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... | 10/17/2006 |
| 7101428 | 2,9-Dichloro-quinacridone as alpha-quinacridone crystal phase inhibitor 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... | 09/05/2006 |
| 7077898 | Black pigment compositions The present invention relates to black pigment compositions comprising (a) carbon black, and (b) a compound of the formula (MO3S)m-Q(CH2)k—X]n,  (I) ... | 07/18/2006 |
| 7077899 | Pigment dispersing agent, pigment composition containing the same and pigment dispersion containing the same 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 contain... | 07/18/2006 |
| 7074267 | Compositions and methods for imparting improved rheology on pigment based inks and paints 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-... | 07/11/2006 |
| 7056378 | Method for producing vattable organic pigments 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 dia... | 06/06/2006 |
| 7041166 | Manufacturing and conditioning of solid solution organic pigments 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 μ of 2.8â... | 05/09/2006 |
| 7033429 | Method of producing low-dust pigment compositions 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 ... | 04/25/2006 |
| 7029526 | Process for making green pigment compositions useful for color filters and LCD's 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 pig... | 04/18/2006 |
| 6972333 | Preparation of quinacridonequinones and substituted derivatives of same A process for by oxidizing a quinacridone in a liquid medium with a non-metal oxidant producing a quinacridonequinone. ... | 12/06/2005 |
| 6942724 | Modified organic colorants and dispersions, and methods for their preparation 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. ... | 09/13/2005 |
| 6936097 | Modified organic colorants and dispersions, and methods for their preparation 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. ... | 08/30/2005 |
| 6926768 | Treatment of high performance pigments A pigment's etheramine sulfonic acid salt is described. Also described is a method for enhancing the performance of a pigment composition containing an organic pigment, comprising enhancing the dispersion of said pigment by adding to 100 parts of said pigment about ... | 08/09/2005 |
| 6918958 | Acid pigment dispersants and pigment preparations The invention relates to pigment dispersants of the formula (I), and to pigment preparations including at least one organic pigment and at least one pigment disperant of the formula (I): wherein Q1, R1 | 07/19/2005 |
| 6916367 | Modified pigments and process for preparing modified pigments 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 ... | 07/12/2005 |
| 6913642 | Pigments having improved coloristic properties and process for their preparation Substantially crystalline organic pigments characterized by small particle size and narrow particle size distribution. ... | 07/05/2005 |
| 6911075 | Pigments having improved coloristic properties and process for their preparation The invention relates to a process for preparing pigments, which comprises subjecting a crude pigment or mixture of crude pigments and a crystalline inorganic salt or mixture of crystalline inorganic salts together, essentially in ... | 06/28/2005 |
| 6911073 | Process for preparing modified pigments 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 gr... | 06/28/2005 |
