Photocurable composition
US4279720A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 2, 1979 |
| Grant date | Jul 21, 1981 |
| Priority date | — |
| Expiry date | Jul 2, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D175/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The use of photo-initiators of the formula I ##STR1## in which Ar is a C.sub.6 -C.sub.14 -aryl radical which is unsubstituted or mono-, di- or tri-substituted by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, phenoxy, C.sub.1 -C.sub.4 -alkylthio, phenylthio or halogen, and R is C.sub.1 -C.sub.12 -alkyl, C.sub.5 -C.sub.6 -cycloalkyl, C.sub.6 -C.sub.10 -aryl or alkaryl, C.sub.7 -C.sub.11 -aralkyl or C.sub.3 -C.sub.6 -alkoxyalkyl, in combination with light stabilizers from the category of the polyalkylpiperidine derivatives in the photopolymerization of ethylenically unsaturated compounds results in polymers with high stability to light and a low degree of yellowing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.