Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making
Patent
1999-02-09
2000-04-04
Hamilton, Cynthia
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
522 6, 522182, 526196, G03C 1725, C08F 246, C08F 452
Patent
active
060459743
ABSTRACT:
The invention relates to photopolymerizable compositions comprising as photoinitiator a borate of the formula I or I' ##STR1## R.sub.1, R.sub.2 and R.sub.3 are, for example and independently of one another, phenyl or another aromatic hydrocarbon, with or without any heteroatoms, which radicals are unsubstituted or are substituted, or the radicals R.sub.1 and R.sub.2 form bridges to produce structures of the formula II, IIa or IIb ##STR2## with the provisos that not more than two of the radicals R.sub.1, R.sub.2 and R.sub.3 are identical and either at least two of the radicals R.sub.1, R.sub.2 and R.sub.3 are aromatic hydrocarbon radicals or phenyl radicals which are substituted in both ortho-positions or at least one radical R.sub.1, R.sub.2 or R.sub.3 is a sterically bulky aryl radical and the remaining radicals of R.sub.1, R.sub.2 and R.sub.3 are aromatic hydrocarbon radicals or are phenyl radicals which are substituted in at least one ortho-position; R.sub.4 is, for example, phenyl or C.sub.1 -C.sub.20 alkyl and G is a radical which is able to form positive ions.
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Cunningham Allan Francis
Kunz Martin
Kura Hisatoshi
Ashton Rosemary
Ciba Specialty Chemicals Corporation
Crichton David R.
Hall Luther A. R.
Hamilton Cynthia
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