Patent application number | Description | Published |
20090084286 | Diketopyrrolopyrrole Pigments Having Heightened Fastnesses and Processes for Preparing Them - The invention relates to a diketopyrrolopyrrole pigment of formula (I) | 04-02-2009 |
20100062357 | Pigment Preparation Based on Diketopyrrolopyrroles - The invention relates to a pigment preparation based on C.I. Pigment Red 254 content with an average particle size of between 20 and 100 nm, and to at least one pigment dispersant of formula (II). | 03-11-2010 |
20100119966 | Diketopyrrolopyrrole Cocrystals With High Transparency - The present invention relates to a pigment composition composed of compounds of the formula (I), (II) and (III) with a novel crystal modification, to their preparation and to the use of this novel product as a pigment. For many applications of organic pigments, for example the coloring of metallic lacquers or the use thereof in color filters, a very high transparency is required. To produce color filters, for example, particularly fine pigments are used, in order to substantially rule out the particle scattering which leads to a lowering of the contrast ratio. The commercially available products, however, do not always meet all requirements of the art. More particularly, there was a need for improvement with regard to the transparency and the associated fineness of the pigment crystals, and also the color purity (chroma). | 05-13-2010 |
20100121053 | Method For Directly Producing Fine-Particle Diketopyrrolopyrrol Pigments - The invention relates to a method for directly producing fine-particle 1,4-diketopyrrolo[3,4-c]pyrrols of formula (1), wherein R | 05-13-2010 |
20100213421 | Diketopyrrolopyrrole Cocrystals - The invention relates to cocrystals of compounds of the formulae (I), (II) and (III), obtainable by reacting 1 mol of a succinic diester with 2 mol of a mixture of nitriles A-CN and B-CN, where A-CN and B-CN are present in the nitrile mixture in a molar ratio of 90:10 to 30:70 relative to one another, and where A-CN is 2-chlorobenzonitrile and B-CN is 4-X-benzonitrile where X=chlorine, methyl or nitrile. | 08-26-2010 |
20100219384 | Diketopyrrolopyrrole Pigment Composition For Use In Color Filters - The invention relates to a pigment composition that is composed of compounds of formulas (I), (II) and (III), is characterized by a average particle size d | 09-02-2010 |