Ciba Specialty Chemicals Corporation

Ciba-geigy Corporation

Basf Se Corporation

Udc Ireland Limited

Stephan Allenbach

Samuel Evans

Peter Murer

Paul Dubs

Gerhard Wagenblast

Christian Lennartz

Christian Schildknecht

Beat Schmidhalter

Thomas Schäfer

Michael Rasberger

Kristina Bardon

Gisèle Baudin

Roger Martin

Marc Ribeaud

Andrea Ricci

François Maike

Rosemarie Sift

Manuela Kocher

Iridium organometallic complexes containing a substituted dibenzo[f,h]quinoxaline having the formula are provided. These compounds are useful as orange or red emitting components of a light emitting layer in an electronic device.

Iridium organometallic complex containing a substituted dibenzo[f,h]quinoxaline and an electronic device having an emitting layer containing the iridium complex

Iridium organometallic complexes containing a substituted dibenzo[f,h]quinoxaline of formula (I) are provided. These compounds are useful as orange or red emitting components of a light emitting layer in an electronic device. 

This invention relates to electroluminescent metal complexes with benzotriazoles of the formula (I), 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. 

Electroluminescent metal complexes with benzotriazoles

This invention relates to electroluminescent metal complexes of the formula (I), or (II), 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. 

Electroluminiscent metal complexes with dibenzo[f,h] quinoxalines

Liquid polyfunctional additives

This invention relates to a novel, technically advantageous process for the preparation of a mixture of alkylated phenothiazines and diphenylamines. Starting from diphenylamine, this is reacted with elemental sulfur in the presence of iodine, and the substance mixture of diphenylamine and phenothiazine is treated with an olefin in the presence of an acid catalyst.

Process for the preparation of a mixture of alkylated phenothiazines and diphenylamines

Products are described which are obtainable by reacting compounds of formula I with compounds of formula IIa or/and IIb and IIIa or/and IIIb and additionally, where appropriate, IV ##STR1## wherein the general symbols are as defined in claim 1, the compound of formula I being, for example, methyl 3-(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionate, the compound of formula IIa being, for example, diethanolamine, the compound of formula IIIa being, for example, methyl oleate, and the compound of formula IV being, for example, sulfur. The cited products can be used as liquid antioxidants in organic materials.

Liquid antioxidants as stabilizers

Compositions comprising compounds of formula ##STR1## wherein the radicals R and R.sub.1 to R.sub.5 are as defined in claim 1, are described. Some of those compounds are novel. They are suitable for the stabilization of organic materials.

Stabilizers for organic materials

The invention relates to reaction products suitable as antioxidants which are substantially liquid at room temperature and which are obtained by the reaction of olefins with mixtures of diphenylamines and phenothiazines which may be alkylated. These products are obtainable by reacting an olefin of formula

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Sisseln, Switzerland

Stephan Allenbach