Ciba Specialty Chemicals Corporation

Basf Se Corporation

Gisèle Baudin

Tunja Jung

Kurt Dietliker

Jean-Marie Adam

Urs Lehmann

Jean-Luc Birbaum

Peter Murer

Beat Schmidhalter

Thomas Schäfer

Jean-Pierre Bacher

Gabriele Baisch

Reinhold Öhrlein

Kai-Uwe Schöning

Antoine Carroy

Frédérique Wendeborn

Jonathan Rogers

Katia Studer

Stephan Allenbach

Rachel Kohli Steck

Caroline Lordelot

Thomas Vogel

Peter Simmendinger

Jemima Schmidt

François Maike

Paul Brown

Manuela Kocher

Rosemarie Sift

Rinaldo Huesler

Rinaldo HÜSLER

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

The present invention provides organometallic latent catalyst compounds, which are suitable as catalysts in polyaddition or polycondensation reactions which are catalysed by a Lewis acid type catalyst, in particular for the crosslinking of a blocked or unblocked isocyanate or isothiocyanate component with a polyol or polythiolto form a polyurethane (PU).

Photolatent catalysts based on organometallic compounds

Base-polymerizable or base-crosslinkable compositions comprising select bicyclic amines with benzylic substitution undergo photochemically induced, base-catalysed reactions upon photochemical conversion of the benzylically substituted amine to an amidine derivative.

Photoactivable nitrogen bases

The invention accordingly relates to an optical recording medium comprising a substrate, a reflecting layer and a recording layer, wherein the recording layer comprises a compound of formula (I) or a mesomeric or a tautomeric form thereof, wherein Mis a metal cation in the oxidation state +3, a hydroxy or halogeno metal group wherein the metal is in the oxidation state +4, or an oxo metal group wherein the metal is in the oxidation state +5; (III) and (IV)are each independently of the other (V), (VI) or (VII); (VIII) is (IX), (X), (XI), (XII), (XIII), or (XIV); (XV) is (XVI) or Cheteroaryl unsubstituted or mono- or poly-substituted by R, R, Rand/or R; Qis N or CR, Qis N or CR, Q, Qand Qare each independently of the other CRR, O, S or NR, Qis CRor N and Qis CRor N; and Rand/or Rare O, S or NR. Please see the disclosure for the other substituents which are less relevant. The compounds of formula (I) are novel and also claimed, as well as the compound of formula (II), or a mesomer or tautomer thereof, wherein R38 is halogen , CF, NO, CN, COR, COOR, SOR, NCO or SCN, G, GM, RR, R, R, R, R, Rand Rare as defined in formula (I), Mis a cation with m positive charges, and m is an integer 1, 2 or 3. The optical recording media are remarkably suitable for DVD&#xb1;R (658 nm), especially at high recording speeds. 

High-capacity optical storage media

Compounds of the formula I R7&#x2033;N&#x2014;R6 RS&#x2014;C,N&#x2014;R4 H C, R'/I R, 3 R 2 (I) in which R, is an aromatic or heteroaromatic radical which is capable of absorbing light in the wave-length range from 200 nm to 650 nm and which is unsubstituted or substituted one or more times by C,&#x2014;C,8alkyl, C2-C,ealkenyl, C2-C,8alkynyl, C,&#x2014;C,ehaloalkyl, NO2, NR,OR, CN, OR,2, SR,2, C(O)R,3, C(O)OR,4, halogen or a radical of the formula II R&#x2dc;&#x2014;N&#x2032; R6 1 R5-C,N.R4 H I C&#x2014;R3 I R2 (II) and which on absorption brings about a photoelimination which leads to the generation of an amidine group, R2 and R3 independently of one another are hydrogen, C,&#x2014;C,ealkyl or phenyl which is unsubstituted or is substituted one or more times by C,&#x2014;C,8alkyl, CN, OR,2, SR,2, halogen or C,&#x2014;C,ehaloalkyl; R5 is C,&#x2014;C,ealkyl or NR8R9; R4, R6, R, R8, R9, R,o and R independently of one another are hydrogen or C,&#x2014;C,8alkyl; or R4 and R6 together form a C2-C,2alkylene bridge which is unsubstituted or is substituted by one or more C1-C4alkyl radicals; or R5 and R, independently of R4 and R6, together form a C2-C,2alkylene bridge which is unsubstituted or is substituted by one or more C1-C4alkyl radicals; or, if R5 is a radical NR8R9, R, and R9 together form a C2-C,2alkylene bridge which is unsubstituted or is substituted by one or more C1-C4alkyl radicals; and R,2, R,3 and R,4 independently of one another are hydrogen or C,&#x2014;C,ealkyl; are suitable as photoinitiators for compounds which react under base catalysis.

A process for producing stable, scratch-resistant coatings comprising the preparation of a photocurable formulation containing certain siloxane photoinitiators as surface-active initiators, application of the formulation to a substrate and the curing of the formulation by exposure to electromagnetic radiation with wavelengths from 200 nm into the IR region and prior, simultaneous or subsequent exposure to heat.

Process for producing coatings using surface-active photoinitiators

Compounds of the formula I are suitable photoinitiators which accumulates at the surface of the formulation in which Y is a divalent group C&#x2013;Ccycloalkylene, C&#x2013;Cbicycloalkylene;C&#x2013;Calkylenen-C&#x2013;Ccycloalkylene, C&#x2013;Calkylene-C&#x2013;Cbicycloalkylene orC&#x2013;Calkylene interrupted by one or more non-consecutive C&#x2013;Ccycloalkylene, &#x2014;U&#x2014;C&#x2013;Ccycloalkylene,C&#x2013;Cbicycloalkylene or &#x2014;U&#x2014;C&#x2013;Cbicycloalkylene; C&#x2013;Calkylene interrupted by one or more non-consecutive O and C&#x2013;Ccycloalkylene,&#x2014;U&#x2014;C&#x2013;Ccycloalkylene, C&#x2013;Cbicycloalkylene and/or&#x2014;U&#x2014;C&#x2013;Cbicycloalkylene; 

Surface-active siloxane photoinitiators

The invention relates to a process for preparing organosilicon group containing photoinitiators of the formula (I), wherein m is a number from 1 to 200; q is 0 or 1; A is IN-C(O)&#x2014;O&#x2014;CHR&#x2014;Y&#x2014; or IN-C(O)&#x2014;NH&#x2014;CHR&#x2014;Y&#x2014;; A' is A or R&#x2032;; Rand R&#x2032;, Rand R&#x2032; are C&#x2013;Calkyl or phenyl, or &#x2014;(O)&#x2014;SiRR&#x2032;R; Ris hydrogen or C&#x2013;Calkyl, Y is a divalent group selected from C&#x2013;Calkeylene, C&#x2013;Calkenylene or &#x2014;(CH)&#x2014;O&#x2014;(CH)&#x2014;; and b are each independently of the other a number of 1 to 6; IN is a photolabile functional moiety of the formula (II) or (III), wherein Ris hydrogen or &#x2014;C(O)&#x2014;C(O)&#x2014;OH or &#x2014;C(O)&#x2014;C(O)&#x2014;OC&#x2013;Calkyl and n is 1&#x2013;3; Rand Rare C&#x2013;Calkyl or together are cycloC&#x2013;Calkyl; Ris hydroxy, C&#x2013;Calkoxy or morpholinyl; X is &#x2014;(CH)&#x2014;, &#x2014;(CH)&#x2014;O&#x2014;(CH)&#x2014; or &#x2014;(CH)&#x2014;O&#x2014;CO&#x2014;(CH)&#x2014;; a and b are each independently of the other a number of 1 to 6; whereby the process is characterized in that a photolabile functional moiety containing a carboxy group (IN-COOH) or an alkoxycarbonyl group (IN-CO&#x2014;OC&#x2013;Calkyl) is reacted with a carbinol- or amino terminated organosilicon compound of the formula (IV), wherein m, Rand R&#x2032;, Rand R&#x2032; are as defined above and B is &#x2014;Y&#x2014;CHR&#x2014;OH or &#x2014;Y&#x2014;CHR&#x2014;NH; B&#x2032; is B or R&#x2032;, in the presence of an enzyme which catalyzes the esterification, transesterification or amidation reaction.

Enzymatic process for preparing organosilicon group containing photoinitiators

A process for the production of coatings with scratch-resistant durable surfaces that comprise as photoinitiator (B) in a photocurable formulation at least one surface-active photoinitiator, concentrated at the surface of the formulation, of formula (Ia) or (Ib), wherein Ris a radical of formula (IIa), Ris a radical of formula (IIb)), or Rand Rare naphthyl, anthracyl, phenanthryl or a heterocyclic radical each of which is unsubstituted or substituted; R, R, R, R, R, R, R, R, Rand Rare, for example, each independently of the others hydrogen; A-Y; C&#x2013;Calkyl, halogen or phenyl; Rand Rare, for example, C&#x2013;Calkyl; X is &#x2014;ORor &#x2014;N(R)(R); Ris, for example, hydrogen or C1&#x2013;C4alkyl; R21 and R22 are, for example, hydrogen or C&#x2013;Calkyl; Xis, for example, &#x2014;O&#x2014;; Y is, for example, a single bond or &#x2014;O&#x2014;; Yis, for example, a single bond; and A is, for example, C&#x2013;Calkyl.

Surface-active photoinitiators

Compounds of formula Ia, Ib and Ic, (Ic), in which R, Rand Rare e.g. phenyl, naphthyl, anthracyl, phenanthryl or a heterocyclic radical, are suitable as photoinitiators which accumulate at the surface of coatings.

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Allschwil, Switzerland

Gisèle Baudin