Basf Se Corporation

Ciba Specialty Chemicals Corporation

Ciba Corporation

Karin Powell

Peter Nesvadba

Walter Fischer

Clemens Auschra

Jean-Luc Birbaum

Dirk Simon

Tunja Jung

Andreas Mühlebach

Johannes Benkhoff

Frank Oliver Heinrich Pirrung

Katharina Fritzsche

Steffen Onclin

Markus Frey

Wolfgang Peter

Katia Studer

Lucienne Bugnon

François Rime

Martin Müller

Christophe Frossard

Svetozar Lucic

Photoinitiator compounds comprising both a photoactive moiety and an amine functionality, bonded to a polyhedral oligomeric silsesquioxane, which photoinitiator is represented by formula (1) or (1') wherein n is 2m; m is an integer of 2 to 30; the sum of n&#x2032;+a is an integer 4-60; n&#x2032; is an even-numbered integer; a is an even- or uneven-numbered integer; and for example different A C-Calkyl, or a photoactive moiety Q1, or a group of formula (2); E for example is a direct bond, L is linear or branched C-Calkylene, preferably propylene; Rand Rfor example are a photoactive moiety Q, or Calkyl; Q is for example a group of formula (4); Zis for example C-Calkylene which is unsubstituted or substituted by one or more OR; and R, R, Rand Rfor example are hydrogen; are especially suitable as low-migrating photoinitiators. 

Silsesquioxane photoinitiators

The present invention relates to a homogenous liquid blend comprising a photoinitiator and an alkoxylate surfactant for incorporation into aqueous based and solvent based radiation curable systems. In particular the invention relates to a homogenous liquid blend which is liquid at room temperature comprising at least 30% by weight with regard to the whole blend of a solid photoinitiator of the radical type and 1-70% by weight of at least one alkoxylated liquid surface active agent and optionally an organic diluent.

Liquid photoinitiator blend

The instant invention relates to new photolatent compounds of the formula I wherein Rand Rare each independently of the other C-Calkyl or C-Ccycloalkyl, Ris hydrogen or C-Calkyl, and wherein the photochemically cleaved group ROH is selected from the group consisting of fragrances, UV absorbers, anti-microbials, anti-fogging agents and clarifiers; with the proviso that, when Rand Rare tert-butyl and Ris hydrogen, Ris not methyl or phenyl. 

Photolatent systems

A method is provided for irreversibly coloring a coating composition containing a color former comprising the steps of

Method of coloring a coating composition

The invention relates to novel N-substituted imides and polymerizable compositions comprising these N-substituted imides. The invention further relates to the use of N-substituted imides as polymerization initiators. The imides are compounds of the formula (I) and (II) wherein n is 1 or 2; m is 1 or 2; Rand Rare each, independently of one another, hydrogen, C-Calkyl, C-C-alkenyl C-Caryl, aralkyl, C-Ccycloalkyl, each of which may be substituted by halogen, C-C-alkyl, hydroxy, C-Calkoxy, carbonyl, C-Calkoxycarbonyl; or Rand Rtogether with the adjacent &#x2014;CO&#x2014;N&#x2014;CO&#x2014; group may form a monocyclic, bicyclic or polycyclic ring, said ring having up to 50 non hydrogen atoms and wherein said ring may contain the structural element (formula III) more than once; Rif n is 1, is C-Calkyl, C-Caryl, aralkyl, C-Ccycloalkyl, ORor SR, NRR; wherein Rif n is 2, is C-Calkylene, C-Carylene, xylylene Rand R, correspond to Rand R; Rif n is 1, is hydrogen, C-Calkyl, C-Caryl, aralkyl, C-Ccycloalkyl, NRR; wherein Rif n is 2, is C-Calkylene, C-Carylene, xylylene; Ris hydrogen, C-Calkyl, C-Caryl, aralkyl, C-Ccycloalkyl, each of which may be substituted by halogen, C-C-alkyl, hydroxy, C-Calkoxy, carbonyl, C-Calkoxy-carbonyl; or Rand Ror Rand Rform together with the N-atom attached to Ra 5-6 membered ring, optionally interrupted by &#x2014;NH&#x2014;, &#x2014;N(C-Calkyl)-, &#x2014;O&#x2014; and/or S-atoms. 

N-substituted imides as polymerization initiators

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Lörrach, Germany

Karin Powell