Water soluble Michler's ketone analogs in combined photoinitiator composition and polymerizable composition
US4576975A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1984 |
| Grant date | Mar 18, 1986 |
| Priority date | — |
| Expiry date | Dec 18, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Michler's ketone analogs and salts thereof, which are photosensitizers in water-soluble photoinitiator systems used to induce polymerization in free-radically-curable, ethylenically-unsaturated materials, are disclosed. The Michler's ketone analogs have the formula: ##STR1## wherein each R is an alkyl group of 1 to 8 carbon atoms, PA0 R.sup.1 is an alkylene group having 1 to 8 carbon atoms, PA0 Z is R.sup.1 COOH or R.sup.1 H, and PA0 n is an integer having a value of 1 or 2. The photoinitiator systems are useful in imaging systems, and additionally contain a free radical initiator compound selected from iodonium salts, biimidazoles, trialkylphosphites, alkyl peroxides, benzyl halides, alkyl nitrates, and the benzophenones other than (a).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.