Ciba-geigy Corporation

Ciba Specialty Chemicals Corporation

National Starch and Chemical Corporation

Other

Eisai Company, Limited

Stephen D Pastor

Sai Ping Shum

Paul A Odorisio

John D Spivack

Ramanathan Ravichandran

Mervin Gale Wood

Joseph Suhadolnik

Joseph E Babiarz

Robert E Detlefsen

Andrea R Smith

Raymond R Seltzer

Deborah DeHessa

Anthony DeBellis

James L Hyun

Andrew B Naughton

Edward T Hessell

Deborah Judd

Martin M Skoultchi

Jacqueline Lau

Rong Xiong

Anthony David Debellis

Martin Dexter

Glen T Cunkle

Peter Solera

Ambelal R Patel

Joseph Stephen Puglisi

Linda A Benjamin

Andrew Brian Naughton

Henry R Hernandez

Luther A R Hall

Carmen Hendricks-Guy

Kurt M Bessonen

Martin M Grover

Roland A Winter

Patrice Bujard

John J Luzzi

Roger Meuwly

Michael P DiFazio

David Eliezer Chasan

Matthew E Gande

Jonathan Rogers

Thomas E Snead

Norihisa Dan

Leslie R Gatechair

Stuart H Ganslaw

Richard W Thomas

François Maike

David E Chasen

John D Spivak

Joseph E Barbiarz

Disclosed are electroluminescent devices that comprise organic layers that contain certain 2H-benzotriazole compounds. The 2H-benzotriazole compounds of blue-emitting, durable, organo-electroluminescent layers. The electroluminescent devices may be employed for full color display panels in for example mobile phones, televisions and personal computer screens.

Electroluminescent device

A process for the preparation of organic material comprising an organic substrate and at least one dielectric layer consisting of one or more oxides of a metal selected from groups 3 to 15 of the periodic table, which comprises the steps of: The substrate can be optionally dissolved with solvent to yield free metal oxide or mixed metal oxides that have a plane-parallel structure.

Process for the preparation of metal oxide coated organic material by microwave deposition

Compounds which have a benzotriazole and a hindered amine moiety in the same molecule are typified by the formula A wherein at least one of G, Ror Rcontains a hindered amine moiety are extremely effective light stabilizers having both the UV absorbing activity of a benzotriazole and the light stabilizing efficacy of a hindered amine in the same molecule. These compounds are effective stabilizers for thermoset resin compositions, thermoplastic resin compositions, for photographic applications, for pigmented or dyed polypropylene, polyamide or polyester fibers, and for white, dyed, dipped, unscented and/or scented candle wax against discoloration and fading when incorporated therein alone or in combination with an antioxidant.

Benzotriazole/HALS molecular combinations and compositions stabilized therewith

This invention pertains to a novel process for preparing sterically hindered N-substituted alkyloxyamines from alkenes by the transition-metal-catalyzed reaction of a intermediate alkylborane with a sterically hindered nitroxyl radical.

Transition-metal-catalyzed process for the conversion of alkenes to sterically hindered substituted n-alkoxyamines

The present invention relates to novel ultraviolet light absorbers of the benzoxazinone, oxanilide, benzylidene malonate, quinazoline and benzotriazole classes. The invention also relates to polymer and photographic compositions stabilized against the deleterious effects of light induced degradation which comprise the novel ultraviolet light absorbers.

Ultraviolet light absorbers

Compounds of formula I or II where R is an aryl moiety, such as phenyl, naphthyl or biphenylyl, or is phenyl substituted by one or more trifluoromethyl, bromo or cyano, and Eand Eare independently hydrogen, alkyl, aralkyl and the like are prepared by reaction of a benzotriazole substituted on the 5-position of the benzo ring by a halogen atom with a arylboronic acid or ester in the presence of a transition-metal catalyst, such as palladium (II) diacetate. The benzotriazole compounds of formula I are particularly efficacious as stabilizers for automotive coatings and candle wax.

Substituted 5-aryl-2-(2-hydroxyphenyl)-2H-benzotriazole UV absorbers, compositions stabilized therewith and process for preparation thereof

where R is an aryl moiety, such as phenyl, naphthyl or biphenylyl, or is phenyl substituted by one or more trifluoromethyl, bromo or cyano, and Eand Eare independently hydrogen, alkyl, aralkyl and the like are prepared by reaction of a benzotriazole substituted on the 5-position of the benzo ring by a halogen atom with a arylboronic acid or ester in the presence of a transition-metal catalyst, such as palladium (II) diacetate. The benzotriazole compounds of formula I are particularly efficacious as stabilizers for automotive coatings and candle wax.

Substituted 5-aryl-2-(2-hydroxyphenyl)-2h-benzotriazole UV absorbers, compositions stabilized therewith and process for preparation thereof

Provided is a novel one-pot, organic solvent-free process for the preparation of 2-(2-nitrophenylazo) substituted phenols. The 2-(2-nitrophenylazo) substituted phenols are precursors for hydroxyphenylbenzotriazole UV absorbers.

Organic solvent-free process for the preparation of 2-(2-nitrophenylazo)phenols

Compounds which have a benzotriazole and a hindered amine moiety in the same molecule are typified by the formula Awherein at least one of G, Ror Rcontains a hindered amine moiety are extremely effective light stabilizers having both the UV absorbing activity of a benzotriazole and the light stabilizing efficacy of a hindered amine in the same molecule. These compounds are effective stabilizers for thermoset resin compositions, thermoplastic resin compositions, for photographic applications, for pigmented or dyed polypropylene, polyamide or polyester fibers, and for white, dyed, dipped, unscented and/or scented candle wax against discoloration and fading when incorporated therein alone or in combination with an antioxidant.

Benzotriazole/hals molecular combinations and compositions stabilized therewith

Sterically hindered N-substituted aryloxyamines are prepared by the Keggin polyoxometalate or the transition metal substituted polyoxometalate (TMS-POM) catalyzed decomposition of diazonium salts in the presence of a sterically hindered nitoxyl radical. These compounds are useful as thermal and light stabilizers for a variety of organic substrates.

Polyoxometalate catalysts for the preparation of sterically hindered N-substituted aryloxyamines

2H-Benzotriazole UV absorbers substituted at the 3-position and/or the 5-position of the phenyl ring by a phenyl moiety which is substituted by a heteroatom are particularly photostable in automotive coatings, and are of low color and exhibit low volatility in thermoplastic compositions.

Benzotriazoles containing phenyl groups substituted by heteroatoms and compositions stabilized therewith

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Danbury, CT, United States of America

Stephen D Pastor