Nitro-containing bisoxime ester photoinitiator and preparation method and use thereof

摘要

This present invention discloses a nitro-containing bisoxime ester photoinitiator having a structure represented by general formula (I). This photoinitiator has excellent application performances in terms of storage stability, photosensitivity, developability, pattern integrity, etc., and it has good adaptability to single-wavelength UV-LED light sources and exhibits a photosensitive property, which is obviously superior to those of existing photoinitiators, under the irradiation of UV-LEDs.;

主权项

1. A nitro-containing bisoxime ester photoinitiator, having a structure represented by general formula (I):wherein
X and Y each independently represent a carbonyl (—CO—) or a single bond; Z is blank, a single bond, or a C1-C5 alkylene group; A is O, S, or a R5N— group, wherein R5 represents hydrogen, a C1-C20 linear or branched alkyl group, a C3-C20 cycloalkyl group, a C4-C20 cycloalkylalkyl group, or a C4-C20 alkylcycloalkyl group; R1 represents hydrogen, halogen, a nitro group, a hydroxy group, a carboxyl group, a sulfonic acid group, an amino group, a cyano group, or an alkoxy group, or a C1-C20 linear or branched alkyl group, a C3-C20 cycloalkyl group, a C4-C20 cycloalkylalkyl group, or a C4-C20 alkylcycloalkyl group optionally substituted with one or more group selected from the group consisting of halogen, a nitro group, a hydroxy group, a carboxyl group, a sulfonic acid group, an amino group, a cyano group, and an alkoxy group; R2 and R3 each independently represent hydrogen, a C1-C20 linear or branched alkyl group, a C3-C20 cycloalkyl group, a C4-C20 cycloalkylalkyl group, a C4-C20 alkylcycloalkyl group, or a C7-C20 aralkyl group, and optionally, hydrogen in the above groups may be substituted with a group selected from the group consisting of halogen, a nitro group, a hydroxy group, a carboxyl group, a sulfonic acid group, an amino group, a cyano group, and an alkoxy group; R4 represents a C1-C20 linear or branched alkyl group, a C3-C20 cycloalkyl group, a C4-C20 cycloalkylalkyl group, a C4-C20 alkylcycloalkyl group, a C3-C20 heteroaryl group, or a C6-C20 aryl group, and optionally, hydrogen in the above groups may be substituted with a group selected from the group consisting of halogen, a phenyl group, a nitro group, a hydroxy group, a carboxyl group, a sulfonic acid group, an amino group, a cyano group, and an alkoxy group.