Patent ID: 6824953
Filing Date: 2004-11-30
Classification: G03F

Abstract:
A photopolymerizable composition comprising:a polymerizable compound having an ethylenic unsaturated bond, a compound of the following general formula (2), and a radical generator that interacts with the compound of formula (2) to generate a radical: wherein R21, R22 and R23 each independently represents an aliphatic group or an aromatic group; L21, L22, and L23 each independently represents an unsubstituted methine group; Y21, Y22 and Y23 each independently represents â€”CR25R26â€”, â€”NR27â€”, â€”Oâ€”, â€”Sâ€”, â€”Seâ€” or â€”Teâ€”; R25, R26 and R27 each independently represents a hydrogen atom, an aliphatic group or an aromatic group; R25 and R26 may be atomic groups bonded to each other to form a ring; the benzene rings Z21, Z22 and Z23 may be condensed with other benzene rings; the benzene rings Z21, Z22 and Z23 as well as the other benzene rings, if any, which are condensed with the benzene rings Z21, Z22 and Z23 may be substituted or unsubstituted; and Xâˆ’ represents an anion.