| 摘要 |
PURPOSE: Provided is a photopolymerization initiators which are highly sensitive and cheap, but deposit no crystal when to be stored in a refrigerator after being diluted and dissolved in an organic solvent. Also, provided are compositions thereof using the same. CONSTITUTION: A photopolymerization initiator is illustrated by formula 1, wherein: each of R1 and R2 is independently a tertiary alkyl group of C4-C15, or a tertiary aralkyl group of C9-C15; each of X1 and X2 is independently -O- or -NH-; R3 is an organic group of C1-C30 (wherein the atom bound with X1 is not an oxygen atom); and R4 is an organic group of C1-C30 (wherein the atom bound with X2 is not an oxygen atom), a tertiary alkoxy group of C4-C15, or a tertiary aralkyloxy group of C9-C15. Also, a photopolymerization initiator is illustrated by formula 2, wherein: each of R5, R7, R8, R9, R10 and R11 is independently a tertiary alkyl group of C4-C15, or a tertiary aralkyl group of C9-C15; each of R6 and R12 is independently a tertiary alkoxy group of C4-C15, a tertiary aralkyloxy group of C9-C15, or an organic group of C1-C30 (wherein the atom bound with X3 is not an oxygen atom); X3 is -O- or -NH-; R13 is an alkelene group of C2-C8; m is an integer of 1-30; and n is an integer of 0-30. |
