| 摘要 |
PURPOSE: An oxime ester compound is provided to ensure excellent stability, low sublimability, excellent developability, and high transmittance in the visible region and to enable the activation by near-ultraviolet rays such as at 365 nm. CONSTITUTION: An oxime ester compound is represented by chemical formula (I). A photopolymerization initiator contains the same, and a photosensitive composition includes the photopolymerization initiator and a polymerizable compound having an ethylenically unsaturated bond. In chemical formula (I), 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).
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