Ciba-geigy Corporation

Ciba Specialty Chemicals Corporation

Dai Nippon Printing Co., Ltd.

Ciba Specialty Chemical Holding, Inc.

Abul Iqbal

Zhimin Hao

John S Zambounis

Alain C Rochat

Olof Wallquist

Paul Lienhard

Sameer H Eldin

Jin Mizuguchi

Johannes Pfenninger

Luigi Cassar

Max Jost

Junji Otani

Ulrich Schadeli

Brian Gerrard Devlin

Fridolin Babler

Toshio Yoshihara

Edward E Jaffe

Kazuhiko Kunimoto

Andre Pugin

Hiroshi Yamamoto

Shivakumar Basalingappa Hendi

Fritz Herren

Iain Frank Fraser

Takashi Deno

Norihisa Dan

Robert Moretti

Kiyoshi Itou

Remy Jeanneret

Kazuhiko Nakamura

Henri Dubas

Minoru Furukawa

Heinz Wolleb

Rudolf Kirchmayr

Philippe Bugnon

Bernhard Medinger

Bernd Lamatsch

Eric Tinguely

Veronique Hall-Goulle

Klaus Praefcke

Heinz Peter

Fridolin B&auml;bler

Ingo Schloder

Kunihiko Kodama

Colin Morton

Johannes Leugs

Hanspeter Hauser

Ryuichi Takahashi

David Macdonald Smith

Werner Surber

Werner Helmut Gerber

Alison MacLennan

Pierre Maurer

Christian Stern

Wern T Tsai

Phillipe Bugnon

Kazuyo Yamamoto

Nancy Tebaldi

Ulrich Sch{umlaut Over (a)}deli

There are provided a pigment-containing coloring material stably dispersible in a high concentration in various organic solvents, and a process for producing the same. The production process of the coloring material is characterized by comprising the steps of: providing a solution comprising (1) a soluble pigment precursor which is convertible into an insoluble pigment, (2) a solvent capable of dissolving the soluble pigment precursor therein, and (3) a stabilizing agent comprising an organic compound having a structure or a functional group capable of stabilizing the dispersibility of the insolubilized pigment in the solvent; and converting said soluble pigment precursor into an insoluble pigment to obtain the coloring material containing the insolubilized pigment dispersed stably in the solvent.

Coloring material and color filter

Electroluminescent device comprising in this order (a) an anode (b) a hole transporting layer (c) a light-emitting layer (d) optionally an electron transporting layer and (e) a cathode and a light-emitting substance, wherein the light-emitting substance is a diketopyrrolopyrrole represented by formula I or formula III processes for the preparation of compounds I, its uses and compositions comprising the compounds I and/or III.

Electroluminescent devices comprising diketopyrrolopyrroles

The present invention relates to fluorescent diketopyrrolopyrrole analogues of the general formula (I), wherein Aand Aare C&#x2013;Calkyl, C&#x2013;Calkenyl, C&#x2013;Calkynyl, C&#x2013;Ccycloalkyl, C&#x2013;Ccycloalkenyl, aryl or heteroaryl, Aand Aare independently of each other C&#x2013;Calkyl, Ar, &#x2014;CRR&#x2014;(CH)&#x2014;Ar, or Y&#x2014;R, wherein Rand Rindependently of each other stand for hydrogen or C&#x2013;Calkyl, or phenyl which can be substituted up to three times with C&#x2013;Calkyl, Arstands for aryl, in particular phenyl or 1- or 2-naphthyl, C&#x2013;Ccycloalkyl, in particular cyclohexyl, or heteroaryl, which can be substituted one to three times with C&#x2013;Calkyl, C&#x2013;Calkoxy, halogen or phenyl, which can be substituted with C&#x2013;Calkyl or C&#x2013;Calkoxy one to three times, and m stands for 0, 1, 2, 3 or 4, Y is C(O)&#x2014; or SO&#x2014; and Ris C&#x2013;Calkyl, Ar, or aralkyl and Acan additionally be hydrogen, C&#x2013;Calkyloxycarbonyl, such as tertbutoxycarbonyl, or aralkyloxycarbonyl, such as benzyloxycarbonyl, a process for their preparation and their use for the preparation of inks, colourants, pigmented plastics for coatings, non-impact printing material, colour filters, cosmetics, polymeric ink particles, toners, dye lasers and electroluminescent devices, or as fluorescent markers for immunoassays and fluorescent tracers for leak detection of fluids. The diketopyrrolopyrrole analogues of the general formula I show a high solid state fluorescence

Fluorescent diketopyrrolopyrrole analogues

Electroluminescent device comprising in this order

Fluorescent pigments

Process for the preparation of fluorescent compositions, fluorescent compositions and their use

Fluorescent anthraquinoid pigments

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.

Mixed crystals and solid solutions of 1,4-diketopyrrolopyrroles

Compositions for making structured color images and application thereof

Reactive extrusion of latent pigments

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.

Fluorescent host-guest-system

Fluorescent indigo pigments

The invention relates to a color-pigmented high molecular weight organic material structured from a radiation-sensitive precursor by irradiation, the pigmentation of which material consists of extremely fine particles, at least 80 mol % of the pigmentation consisting of a pigment of the class diketopyrrolopyrrole, dioxazine, isoindoline, isoindolinone, disazo condensation yellow or benzimidazolonazo, each containing at least one --NHCO-- group, and, where appropriate, a second pigment of the class diketopyrrolopyrrole, dioxazine, isoindoline, isoindolinone, benzimidazolonazo, disazo or phthalocyanine, and, when the structure of the main pigment is point-symmetrical, the two pigments being present in a balanced molar ratio of from 1:1 to 7:3. Those materials are used preferably in the form of thin layers which are built up in patterns in one or more layers on a transparent substrate and can be used, for example, as optical color filters.

Highly transparent, color-pigmented high molecular weight material

Growing community of inventors

Arconciel, Switzerland

Abul Iqbal