Oxime ester compound and photopolymerization initiator containing the same
US8148045B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2010 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Dec 2, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/114
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A novel compound is a highly-sensitive photopolymerization initiator with excellent stability, low sublimability, excellent developability, and high transmittance in the visible region. It 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 such compound. An oxime ester compound is 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:R1 and R2 each represent R11, COR11, CONR12R13, CN, etc.; R11, R12, and R13 each represent a C1-20 alkyl group, etc.; R3 and R4 each represent R11, OR11, COR11, CONR12R13, OCOR11, CN, a halogen atom, etc.; a and b each represent an integer 0-4; X represents an oxygen atom, a sulfur atom, etc.; and R5 represents OH, COOH, or a group represented by general formula (II).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.