申请人:MURATA Kiyoshi
公开号:US20110129778A1
公开(公告)日:2011-06-02
The invention provides a novel compound useful as a highly-sensitive photopolymerization initiator that has excellent stability, low sublimability, excellent developability, and high transmittance in the visible region and that efficiently absorbs, and is activated by, near-ultraviolet rays such as at 365 nm. Also provided are a photopolymerization initiator and a photosensitive composition using the above-described compound. Specifically, the invention provides an oxime ester compound represented by the following general formula (I), a photopolymerization initiator containing the same, and a photosensitive composition containing the photopolymerization initiator and a polymerizable compound having an ethylenically unsaturated bond:
wherein, R
1
and R
2
each represent R
11
, COR
11
, CONR
12
R
13
, CN, etc.; R
11
, R
12
, and R
13
each represent a C
1-20
alkyl group, etc.; R
3
and R
4
each represent R
11
, OR
11
, COR
11
, CONR
12
R
13
, OCOR
11
, CN, a halogen atom, etc.; a and b each represent an integer of 0 to 4; X represents an oxygen atom, a sulfur atom, etc.; and R
5
represents OH, COOH, or a group represented by general formula (II).