Synthesis, properties and photolysis of new iodonium tetrakis(pentafluorophenyl)gallate photoinitiators and comparison with their indate and aluminate analogs
摘要:
A series of new iodonium tetrakis (pentafluorophenyl) gallates were synthesized in high yield via an improved preparation of the lithium gallate, their photoproducts analyzed by UV, F-19 NMR and GC-MS spectra and a photolysis mechanism postulated. The stability of these photoinitiators was also compared with their borate, aluminate and indate analogs. (C) 2002 Published by Elsevier Science Ltd.
SENSITIZER/INITIATOR COMBINATION FOR NEGATIVE-WORKING THERMAL-SENSITIVE COMPOSITIONS USABLE FOR LITHOGRAPHIC PLATES
申请人:Simpson Christopher D.
公开号:US20110003123A1
公开(公告)日:2011-01-06
The radiation-sensitive composition and the negative working imageable element include a cationic IR absorber with tetraarylborate counteranion and an onium initiator with tetraarylborate counteranion. The use of these components provides high imaging sensitivity, good shelflife and high print run length.