Ciba-geigy Corporation

Ciba Specialty Chemicals Corporation

Basf Se Corporation

Novartis Ag

Base Se

Igm Group B.v.

Kurt Dietliker

Werner Rutsch

Rinaldo Husler

Tunja Jung

Jean-Luc Birbaum

Hitoshi Yamato

Vincent Desobry

Manfred Rembold

Masaki Ohwa

Toshikage Asakura

Franciszek Sitek

Katia Studer

Jean-Pierre Wolf

Godwin Berner

Martin Kunz

Katharina Misteli

Dieter Lohmann

Hisatoshi Kura

Rudolf Kirchmayr

Peter Chabrecek

Peter Murer

Kurt Meier

Junichi Tanabe

Eginhard Steiner

Martin Riediker

Timo Ott

Harry Beyeler

Gisèle Baudin

Rinaldo Hüsler

Hansjörg Grützmacher

Christoph De Leo

Rinaldo H Usler

Sameer H Eldin

Urs Lehmann

Max Hunziker

David Niederer

Akira Matsumoto

Hidetaka Oka

Allan Francis Cunningham

Christopher G Demmer

Thomas Bolle

Stephan Burkhardt

Antoine Carroy

Lothar Alexander Engelbrecht

André Fuchs

Roger G Hall

Reinhold Oehrlein

Rachel Kohli Steck

Caroline Lordelot

Peter Simmendinger

Peter Grieshaber

Thomas Vogel

Daniel Stein

Natalia Kukaleva

Thomas Ulrich

Hansjorg Friedrich Grutzmacher

Paul Brown

Francedillaois Rime

Beat Grimm

Lother Alexander Engelbrecht

Philip Caspari

Hartmut Bleier

Rinaldo Huesler

Hansjörg Gruützmacher

Georgina Müller

Georgina MÜLLER

Hansjörg GRÜTZMACHER

Rinaldo HÜSLER

Compounds of the Formula (I), (II) and (III) wherein Ar is for example phenylene, biphenyleneor naphthylene, all of which are unsubstituted or substituted by C-C-alkyl, C-C-alkenyl, CN, OR, SR, CH 2OR, COOR, CONRRor halogen; R, R, Rand Rindependently of one another other are hydrogen or C-C-alkyl; Rand Rtogether and Rand Rtogether form a C-C-alkylene bridge which is unsubstituted or substituted by one ore more C-C-alkyl; Ris hydrogen or C-C-alkyl; Rand Rindependently of one another for example are hydrogen, phenyl, C-C-alkyl, C-C-alkyl which is interrupted by one or more O; n is 1-10; X is O, S or NR; A and Aare suitable linking groups; are suitable as photolatent bases. 

Photoactivable nitrogen bases

The present invention relates to a liquid thioether carboxylic acid ester, a process for the preparation of the liquid thioether carboxylic acid ester, an article comprising the liquid thioether carboxylic acid ester as well as a use of the liquid thioether carboxylic acid ester as a component or substantial part of an optical system, tunable lens, adaptive optical module and materials thereof, actuator, electro-active polymer, laser and all related products, optical liquid, cover glass, lens or container material, tiltable prism or optical calibration liquid or optical refractive index matching liquid and a use of the liquid thioether carboxylic acid ester as a component or substantial part of a color filter, window material, coating, varnish, lacquer, dye or pigment formulation, immersion liquid, ingredient or additive in a plastic material or ingredient or additive in a polymer.

Liquid thioether carboxylic acid esters

Bisacylphosphine oxide or bisacylphosphine sulfide compounds of formula (I) or (II) wherein

Derivatives of bisacylphosphinic acid, their preparation and use as photoinitiators

Compounds of the Formula (I), (II) and (III) wherein Aris is for example phenylene, biphenylene or naphthylene, all of which are unsubstituted or substituted by C-C-alkyl, C-C-alkenyl, CN, OR, SR, CH2OR, COOR, CONRRor halogen; R, R, Rand Rindependently of one another other are hydrogen or C-C-alkyl; Rand Rtogether and Rand Rtogether form a C-C-alkylene bridge which is unsubstituted or substituted by one or more C-C-alkyl; Ris hydrogen or C-C-alkyl; Rand Rindependently of one another for example are hydrogen, phenyl, C-C-alkyl, C-C-alkyl which is interrupted by one or more O; n is 1-10; X is O, S or NR; A and Aare suitable linking groups; are suitable as photolatent bases. 

A photoinitiator mixture comprising the components wherein  wherein

Liquid bisacylphosphine oxide photoinitiator

Compounds of the Formula (I) wherein x is an integer from 1-4; p is an integer from 1-3; q is an integer from 0-3; Ar is phenyl, naphthyl, anthryl or phenanthryl each of which optionally is substituted by one or more Cl, CN, OR, C-Calkenyl or C-Calkyl which optionally is substituted by one or more OR, COOR or halogen; Rif x is 1, is OR, O&#x2014;X, NRR, C-Calkyl optionally substituted by one or more COOR, or is C-Calkyl interrupted by one ore more O, or is C-Calkenyl or phenyl-C-Calkyl; Rif x is 2, is for example C-Calkylene; Rif x is 3, is for example a tri-valent radical; Rif x is 4, is for example a tetravalent radical; Rand Rare hydrogen or C-Calkyl, or Rand Rtogether are O, C-Calkylene or CH&#x2550;CH; Ris C-Calkyl; R, R, R, R, Rand Rare for example hydrogen or C-Calkyl; and X is a x-valent cationic counter ion; are in particular suitable as photoinitiators for the curing with UV-A light (320-450 nm). 

Alpha-hydroxyketones

The invention pertains to an oligomer or polymer substituted by one or more bisacylphosphine oxide moieties, characterized in that said bisacylphosphine oxide moiety is linked via the phosphorous atom, optionally via a spacer group, to the oligomer or polymer backbone; as well as to specifically functionalized bisacylphosphine oxides, suitable to prepare said polymers or oligomers.

Polymer-bound bisacylphosphine oxides

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.

The present application provides a composition showing a color change depending on the absorbed radiation-dose, comprising (a) an acid responsive colorant; (b) a photolatent acid; characterized in that (b) is a sulfonyloxime ester compound; and its use as a radiation dose indicator.

UV-dosis indicators

The invention relates to novel photoinitiators of formula (I) wherein each of the substituents is given the definition as set forth in the Specification and the claims. The photoinitiators can be used to prepare multifunctional photoinitiators. 

Functionalized photoinitiators

The invention relates to a process for the preparation of (bis)acylphosphanes of formula I, wherein n and m are each independently of the other 1 or 2; R1 if n=1, is e.g. unsubstituted or substituted C-Calkyl or C-Calkenyl, or phenyl, R1 if n=2, is e.g. a divalent radical of the monovalent radical defined above; R2 is e.g. C-Calkyl, C-Ccycloalkyl, C-Calkenyl, mesityl, phenyl, naphthyl; R3 is one of the radicals defined under R; the process comprises the steps a) contacting e.g. elemental phosphorous [P]&#x221e;, P(Hal)with a reducing metal optionally in the presence of a catalyst or an activator in a solvent to obtain metal phosphides MeP or Me'P, wherein Me is an alkali metal and Me&#x2032; is an earth alkali metal or to obtain metal polyphosphides b) optionally adding a proton source, optionally in the presence of a catalyst or an activator to obtain metal dihydrogen phosphides MePH; c) subsequent acylation reaction with m acid halides of formula III or m carboxylic acid esters of formula IV or, in case that in formula I m=1, with one carboxylic ester of formula IV followed by one acid halide of formula III or vice versa, wherein R is the residue of an alcohol and Ris as defined above; d) alkylation reaction subsequent reaction with an electrophilic agent RHal or other electrophilic agents to obtain the compounds of formula I. An oxidation step may follow to obtain mono- and bisacylphosphane oxides or mono- and bisacylphosphane sulfides, which are used as photoinitiators. 

Process for preparing acylphosphanes and derivatives thereof

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.

Compounds of formula (I), wherein Ris hydrogen or alkyl; Ris C-Calkoxy or a morpholino radical; and Ris hydrogen or C-Calkoxy, are suitable for improving the solubility of specific photoinitiators in formulations and accordingly enhance the storage stability of formulations comprising a photoinitiator and compounds of formula (I) 

Storage stability of photoinitiators

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Allschwil, Switzerland

Kurt Dietliker