Ciba Specialty Chemicals Corporation

Basf Se Corporation

Ciba-Geigy Corporation

Basf Se Ludwigshafen

Bernd Lamatsch

Olof Wallquist

Pascal Hayoz

Beat Schmidhalter

Thomas Ruch

Paul Van Der Schaaf

Margherita Fontana

Abul Iqbal

Zhimin Hao

Sameer H Eldin

Urs Lehmann

Philippe Bugnon

Thomas Schäfer

Frank Oliver Heinrich Pirrung

Stephan Burkhardt

Thomas Eichenberger

Roger Prétôt

Olivier Frederic Aebischer

Andreas Gernandt

Mathias Dueggeli

Ingo Schloder

Johannes Benkhoff

Marian Lanz

Christoph Krebs

Laurent Michau

Martin Elbs

Dario Perera

Disclosed is a composition comprising a charged particle of volume 5 nmto 50 million nmpreferably having an inorganic core of SiO, AIO, and/or TiO, or a core essentially consisting of an organic pigment and/or pigment derivative, and a counter ion which is separable from the particle and is not covalently linked to the particle, said counter ion comprising a silicon atom which is directly bound to a carbon atom. Preferably, said charged particle comprises a dye attached to said inorganic core and said counter ion comprises a (poly)siloxane moiety linked via suitable bridge members to a quaternary, positively charged, nitrogen or phosphorus atom, or to a moiety carrying an anionic functional group. Said composition may be used e.g. in the form of a homogenous dispersion in an electrophoretic display.

Charged particles

This invention relates to electroluminescent metal complexes of the formula (I) wherein the ring A, represents an optionally substituted aryl group which can optionally contain heteroatoms, represents an optionally substituted nitrogen containing aryl group, which can optionally contain further heteroatoms, or the ring A may be taken with the ring B binding to the ring A to form a ring; represents an acyclic carbene, or a cyclic carbene (ring C), which can optionally contain heteroatoms, represents an optionally substituted aryl group which can optionally contain heteroatoms,

Electroluminescent metal complexes with nucleophilic carbene ligands

The present invention relates to a process for polymerizing (hetero)aromatic compounds under formation of aryl-aryl C&#x2014;C couplings for preparing conjugated polymers with high molecular weight and high regioregularity, and to novel polymers obtainable by this process. The invention further relates to the use of the novel polymers as semiconductors or charge transport materials in optical, electrooptical or electronic devices including field effect transistors (FETs), thin film transistors (TFT), electroluminescent, photovoltaic and sensor devices.

Process for polymerising (hetero)aromatic compounds

Described is a pigment dispersion which is useful for electrophoretic displays comprising &#x3b1;) a bis-oxodihydro-indolylene-benzodifuranone colorant of the Formula (I) wherein the substituents are defined as in claim, &#x3b2;) a specific polymeric dispersant, and &#x3b3;) a solvent which is suitable for dispersions used in electrophoretic displays. Also described are novel colourants and dispersants. 

Black pigment dispersion

This invention relates to electroluminescent metal complexes of the formula (I), wherein the ring A, formula (II), represents an optionally substituted aryl group which can optionally contain heteroatoms, the ring B, formula (III), represents an optionally substituted nitrogen containing aryl group, which can optionally contain further heteroatoms, or the ring A may be taken with the ring B binding to the ring A to form a ring; the group C, formula (IV), represents an acyclic carbene, or a cyclic carbene (ring C), which can optionally contain heteroatoms, the ring D, formula (V), represents an optionally substituted aryl group which can optionally contain heteroatoms, n1 is an integer of 1 to 3, m1 is an integer of 0, 1, or 2, m2 is an integer 0, or 1, Mis a metal with an atomic weight of greater than 40, Lis a monodentate ligand, or a bidentate ligand, Y is &#x2014;C(&#x2550;O)&#x2014;, or &#x2014;C(X), wherein Xis hydrogen, or Calkyl, especially hydrogen, and y is 0, or 1, especially 0; a process for their preparation, electronic devices comprising the metal complexes and their use in electronic devices, especially organic light emitting diodes (OLEDs), as oxygen sensitive indicators, as phosphorescent indicators in bioassays, and as catalysts. 

The present invention relates to a process for the preparation of a compound of the general formula (I), which comprises converting a compound of the general formula (II), in an aprotic organic solvent in the presence of a catalytically active amount of a strong acid (catalyst) or of an agent that liberates a strong acid or of an ammonium salt of a strong acid, it also being possible for the catalyst to be part of the starting material/product, into a compound of formula I, wherein R, Rand Rare each independently of the others a hydrogen atom, a nitro group, a sulfo group, a halogen atom, a pseudohalogen, a group COORor CONHRor a Calkyl, Calkoxy or aryloxy radical, an amide group, a thioalkyl or thioaryl radical, an alkyl- or aryl-sulfonyl radical, an alkyl- or aryl-sulfinyl radical, a trifluoromethyl group or a phosphono group, Rand Rbeing a hydrogen atom or a Calkyl radical or an aryl or aralkyl radical, Ris a group &#x2014;C(O)CHC(O)CHand Ris a hydrogen atom or an acyl radical, or Rand Rare a group &#x2014;C(O)CHC(O)CH. The process according to the invention is simple to perform and results in products of high chemical purity and high isomeric purity in a high yield 

Process for the preparation of 4-methyl-7-aminoquinolones

Preparation of sparingly soluble aromatic amines by catalytic hydrogenation of the corresponding aromatic nitro compounds in the presence of hydrogen, a solvent and a catalyst having a particle size of not less than 0.5 mm, wherein the aromatic nitro compound selected is a compound whose corresponding amine is soluble to an extent of not more than 50% by weight in the solvent used under the reaction conditions of the hydrogenation, and also their use for preparing azo compounds.

Process for preparing sparingly soluble aromatic amines

Diketopyrrolopyrroles of formula I ##STR1## are prepared by reacting a diketopyrrolopyrrole of formula II ##STR2## with a) formic acid or b) a compound of formula III

Process for the preparation of diketopyrrolopyrrolecarboxylic acids and

Diketopyrrolo�3,4-c!pyrroles of the formula ##STR1## in which X and Y independently of one another are a divalent aromatic radical and R is a radical CN, COR.sub.5, CO.sub.2 R.sub.5, CON(R.sub.5).sub.2, NO.sub.2, SO.sub.2 R.sub.5, SOR.sub.5, SO.sub.2 N(R.sub.5).sub.2 or PO(OR.sub.6).sub.2. For the definition of the substituents R.sub.1, R.sub.2 and R.sub.5, refer to claim 1. These compounds are blue to violet, tinctorially strong pigments with good stability properties, in particular good light stability and weather stability.

Blue diketopyrrolopyrrole pigments

1,4-diketopyrrolopyrroles of the formula ##STR1## in which R.sub.1 and R.sub.2 independently of one another are hydrogen, C.sub.12 -C.sub.24 alkyl, C.sub.6 -C.sub.24 alkyl which is interrupted one or more times by O or S, or are a group of the formula ##STR2## in which R.sub.5 is C.sub.4 -C.sub.18 alkyl or C.sub.5 -C.sub.10 cycloalkyl,

Polymerizable diketopyrrolopyrroles and polymers prepared therewith

The invention relates to diketopyrrolo�3,4-c!pyrroles of formula ##STR1## wherein R.sub.1 and R.sub.2 are each independently of the other hydrogen, halogen, C.sub.1 -C.sub.6 alkyl, cyano or a --OR.sub.3, --COOR.sub.3, --CON(R.sub.3)(R.sub.4), --COR.sub.3 or --N(R.sub.3)(R.sub.4) group, and R.sub.3 and R.sub.4 are each independently of the other hydrogen, C.sub.1 -C.sub.6 alkyl, phenyl which is unsubstituted or substituted by halogen or C.sub.1 -C.sub.6 alkyl. Said diketopyrrolo�3,4-c!pyrroles are pigments colored in a strong yellow shade having good fastness properties.

Yellow diketopyrrolopyrrole pigments

Mass-coloured synthetic polyamide containing, as pigment, at least one diketopyrrolopyrrole pigment of formula ##STR1## wherein A and B are each independently of the other a radical of formula ##STR2## wherein Q is a --CONH.sub.2 group,

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Riehen, Switzerland

Bernd Lamatsch