Oxime ester photoinitiators
AssigneeBASF SE
InventorsKazuhiko Kunimoto, Hisatoshi Kura, Hiroshi Yamamoto, Yumiko Nakagawa, Toshikage Asakura, Kaori Sameshima
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AssigneeBASF SE
InventorsKazuhiko Kunimoto, Hisatoshi Kura, Hiroshi Yamamoto, Yumiko Nakagawa, Toshikage Asakura, Kaori Sameshima
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Disclosed are oxime ester compounds which have specific benzo (unsaturated 5-membered ring)-carbonyl group and their use as photoinitiators in photopolymerizable compositions, in particular in photoresist formulations for display applications, e.g. liquid crystal display (LCD), organic light emitting diode (OLED) and touch panel.
Compounds of formulae (I)
Compounds of formula (IA)
Dependencies are inferred from the claim text.
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Containing two hetero rings: linked by a carbon chain containing only aliphatic carbon atoms
With substituted hydrocarbon radicals attached to carbon atoms of the hetero ring: radicals substituted by oxygen atoms
Having two or three double bonds between ring members or between ring members and non-ring members: with hetero atoms or with carbon atoms having…
With only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the hetero ring: radicals…
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This application is a national stage application (under 35 U.S.C. § 371) of PCT/IB2014/064309, filed Sep. 8, 2014, which claims benefit of European Application No. 13183651.2, filed Sep. 10, 2013, both applications of which are incorporated herein by reference in their entirety.
The invention pertains to new oxime ester compounds which have specific benzo(unsaturated 5-membered ring)-carbonyl group and their use as photoinitiators in photopolymerizable compositions, in particular in photoresist formulations for display applications, e.g. liquid crystal display (LCD), organic light emitting diode (OLED) and touch panel.
Oxime ester compounds having hetroaryl moieties are known in the art. For example in CN103044581A macromolecular photoinitiators their preparation method and application thereof in photocurable compositions are provided. KR1225695B1 discloses α-ketoxime ester compounds as photopolymerization initiators. In KR2013003305A oximino dithiocarbonate compounds, containing furan-2-yl, 3-methylthiophen-2-yl, or 2-methylphenyl group are described as photoinitiators. CN102492060B discloses a diphenyl sulfide oxime ester type photoinitiator which comprises a O or S-containing heterocyclic radical substituted aryl or aryl with at least one substituent containing O or S.
It now has been found that compounds of the formula I or II
wherein
X is