05451343 is referenced by 103 patents and cites 21 patents.

The present invention relates to a novel class of compounds which absorb light at wavelengths greater than 350 nm and are useful as fluorescers or as photoinitiators. The present invention provides compounds of the formulas (I) and (II) and their equivalents (the nomenclature of the compounds used herein is based on the numbering of positions as shown in formula (I)): ##STR1## where: when W is .dbd.O, W.sup.1 is hydrogen or --OR.sup.9 and when W is .dbd.NR.sup.+.sub.2, W is hydrogen or NR.sub.2.sup.+2, A is hydrogen, alkenyl, alkyl or an election withdrawing group, and the remaining groups are as defined in the disclosure.

Title
Fluorone and pyronin y derivatives
Application Number
702886
Publication Number
5451343
Application Date
November 19, 1993
Publication Date
September 19, 1995
Inventor
Jianmin Shi
Webster
NY, US
Douglas C Neckers
Perrysburg
OH, US
Agent
Thompson Hine & Flory
Assignee
Spectra Group
OH, US
IPC
D06P 3/76
View Original Source