Photoinitiator mixtures containing a titanocene and a 3-ketocoumarin
US5011755A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1990 |
| Grant date | Apr 30, 1991 |
| Priority date | — |
| Expiry date | Jan 30, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S502/522
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to compositions comprising PA1 (a) a titanocene photoinitiator of the formula I ##STR1## (b) a 3-ketocoumarin of the formula II ##STR2## in which both R.sup.1, R.sup.2 and R.sup.3 are as defined in claim 1, R.sup.4 is a radical of the formula V ##STR3## R.sup.5 is C.sub.1 -C.sub.20 alkyl, cycloalkyl having 5-7 ring carbon atoms, phenyl or naphthyl which are unsubstituted or substituted by one to three C.sub.1 -C.sub.6 alkyl groups, C.sub.1 -C.sub.6 alkoxy groups or halogen atoms or by one diphenylamino or C.sub.1 -C.sub.6 dialkylamino group, or is C.sub.7 -C.sub.9 aralkyl, a radical --(CH.dbd.CH).sub.a --C.sub.6 H.sub.5 or a radical of the formula V, a is 1 or 2, preferably 1, and R.sup.10, R.sup.11, R.sup.12, R.sup.13 and R.sup.14 independently of one another are hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy, phenyl, tolyl, xylyl or benzyl, and R.sup.11 can additionally also be a group --NR.sup.15 R.sup.16 or --OR.sup.15, wherein R.sup.15 and R.sup.16 independently of one another are hydrogen or C.sub.1 -C.sub.6 alkyl, it also being possible for two or three of the radicals R.sup.10, R.sup.11, R.sup.12 and R.sup.13 together with the ring c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.