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US 2007/0078246 A1Published application
Polymeric photoinitiators
AssigneeHenkel AG & Co. KGaA
InventorsDonald Herr, Ziyi Hu, Charles Paul, Robert Humphreys
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Abstract
UV curable compositions, polymeric photoinitiators and precursors therefor are described.
Claims11
A sulfide-linked photoinitiator derived from the reaction of a SH-functional arylketone and an unsaturated compound.
A sulfide-linked photoinitiator having the following structure:
- wherein
- Q is a small molecule or polymer,
- Ar is selected from the group consisting of:
- R is independently a linear or branched alkyl group, cycloalkyl, alkylenoxy, alkenyl or aryl group, an alkyl group containing a heteroatom or a carbonyl group,
- R2 is independently a linear or branched alkyl group, cycloalkyl, alkylenoxy, alkenyl or aryl group, an alkyl groups containing a heteroatom, a carbonyl group, H, OR, NR2, SR, F, Cl, Br or I,
- X is O, NR, S, PR, or SiR2,
- m=0 or 1, and
- y=1-100.
5 more elements
Dependencies are inferred from the claim text.