Basf Se Corporation

Ryuhei Yamagami

Hisatoshi Kura

Kazuhiko Kunimoto

Yuichi Nishimae

Keita Tanaka

Yuichi Nishimale

Oxime ester compounds of the formula I, II, III, IV or V whereinZ is for example Zfor is NO, unsubstituted or substituted C-Caroyl or unsubstituted or substituted C-Cheteroaroyl; provided that at least one Zis other than NO; Zis for example unsubstituted or substituted C-Caroyl; R, R, R, R, Rand Rfor example are hydrogen, halogen, or unsubstituted or substituted C-Calkyl, unsubstituted or substituted C-Caryl, or unsubstituted or substituted C-Cheteroaryl; R, R, R, Rand Rfor example are hydrogen, halogen, OR, unsubstituted or substituted C-Calkyl; provided that Rand Rare neither hydrogen nor fluorine; Ris for example unsubstituted or substituted C-Caryl or C-Cheteroaryl Q is for example C-Carylene or C-Cheteroarylene; Qis &#x2014;C-Calkylene-CO&#x2014;; Qis naphthoylene; Qis for example phenylene; L is for example O-alkylene-O&#x2014;; Ris for example hydrogen or C-Calkyl; Ris for example hydrogen, or unsubstituted or substituted C-Calkyl; are effective photoinitiators.

Oxime ester photoinitiators

Oxime ester compounds of the formula I, II, III, IV or V wherein Z is for example Zfor is NO, unsubstituted or substituted C-Caroyl or unsubstituted or substituted C-Cheteroaroyl; provided that at least one Zis other than NO; Zis for example unsubstituted or substituted C-Caroyl; R, R, R, R, Rand Rfor example are hydrogen, halogen, or unsubstituted or substituted C-Calkyl, unsubstituted or substituted C-Caryl, or unsubstituted or substituted C-Cheteroaryl; R, R, R, Rand Rfor example are hydrogen, halogen, OR, unsubstituted or substituted C-Calkyl; provided that Rand Rare neither hydrogen nor fluorine; Ris for example unsubstituted or substituted C-Caryl or C-Cheteroaryl Q is for example C-Carylene or C-Cheteroarylene; Qis &#x2014;C-Calkylene-CO&#x2014;; Qis naphthoylene; Qis for example phenylene; L is for example O-alkylene-O&#x2014;; Ris for example hydrogen or C-Calkyl; Ris for example hydrogen, or unsubstituted or substituted C-Calkyl; are effective photoinitiators.

Oxime ester compounds of the formula I, II, III, IV or V, wherein Z is for example (formula A); Zfor is NO, unsubstituted or substituted C-Caroyl or unsubstituted or substituted C-Cheteroaroyl; provided that at least one Zis other than NO; Zis for example unsubstituted or substituted C-Caroyl; R, R, R, R, Rand Rfor example are hydrogen, halogen, or unsubstituted or substituted C-Calkyl, unsubstituted or substituted C-Caryl, or unsubstituted or substituted C-Cheteroaryl; R, R, R, Rand Rfor example are hydrogen, halogen, OR, unsubstituted or substituted C-Calkyl; provided that Rand Rare neither hydrogen nor fluorine; Ris for example unsubstituted or substituted C-Caryl or C-Cheteroaryl Q is for example C-Carylene or C-Cheteroarylene; Qis &#x2014;C-Calkylene-CO&#x2014;; Qis naphthoylene; Qis for example phenylene; L is for example O-alkylene-O&#x2014;; Ris for example hydrogen or C-Calkyl; Ris for example hydrogen, or unsubstituted or substituted C-Calkyl; are effective photoinitiators. 

Oxime ester compounds of formula (I), wherein R, R, R, R, R, R, R, R, R, and Rindependently of each other are hydrogen, C-Calkyl, (A), COR, NO, or OR; provided that at least one of R, R, R, R, R, R, R, R, R, and Ris (A), and provided that at least one of the remaining R, R, R, R, R, R, R, R, R, and Ris CORor NO; Ris for example C-Calkyl, M or (B); X and Xare for example a direct bond; Rand R'are for example hydrogen or C-Calkyl; Rand R&#x2032;are for example C-Caryl or C-Cheteroaryl; M is (X), (Y) or (Z); Xis O, S or NR; Rand Rare for example phenyl; R, R, R, R, R, or Rfor example are hydrogen, COR, NO, or (B); provided that at least two oxime ester groups are present in the molecule; are useful as photoinitiators. 

Compounds of the formula (I), wherein R, R, R, R, R, R, Rand Rfor example independently of each other are hydrogen, C-Calkyl, (II), CORor NO, provided that at least one pair of Rand R, Rand R, Rand R, Rand R, Rand R, or Rand Ris (III); R, R, Rand Rfor example independently of each other are hydrogen, C-Calkyl which optionally substituted; or R, R, R, and Rindependently of each other are unsubstituted or substituted phenyl; X is CO or a direct bond; Ris for example C-Calkyl which optionally is substituted, C-Calkenyl, C-Ccycloalkenyl, C-Calkinyl, C-C-cycloalkyl, phenyl or naphthyl both of which are optionally substituted; Ris for example hydrogen, C-Ccycloalkyl, C-Calkenyl, C-Calkoxy, C-Calkyl, phenyl or naphthyl; Ris for example C-Caryl or C-Cheteroaryl; Ris for example C-Caryl which is unsubstituted or substituted by one or more C-Calkoxy or C-Calkyl; are in particular suitable as photoinitiators for color filter applications. 

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Osaka, Japan

Ryuhei Yamagami