UV absorbent and preparation method thereof, compositions and image forming method
US6773861B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2002 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Dec 4, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/031
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A UV absorbent represented by the following formula (1) [R1 represents an alkenyl group, all of R1 represent the same group, and R2, R3 and R4 independently represent a hydrogen atom, an alkyl group, an alkoxy group, or a halogen atom], a method of preparing the UV absorbent due to a reaction of a compound represented by the following formula (2) and an alkenylating agent represented by the following formula (3) in the presence of a base [R2, R3 and R4 independently represent a hydrogen atom, an alkyl group, an alkoxy group, or a halogen atom, and X represents a halogen atom, —OSO2R5 or —OSO2OR1, and R5represents an alkyl group or an aryl group], a composition containing therein the UV absorbent, and an image forming method using the composition:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.