The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 04, 2000
Filed:
Feb. 09, 1999
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
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.