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US 7,799,884 B2Granted
Polymeric photoinitiators
AssigneeHenkel AG & Co. KGaA
InventorsDonald E. Herr, Ziyi Hu, Charles W. Paul, Robert W. R. Humphreys
Life of this patent
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Abstract
UV curable compositions, polymeric photoinitiators and precursors therefor are described.
Claims6
A sulfide-linked photoinitiator having the following structure:
- wherein
- Q is selected from the groups consisting of poly(butadiene), styrene-b-isoprene-b-styrene (SIS), styrene-b-butadiene-b-styrene (SBS), EPDM rubber, styrene-butadiene copolymers (SBR), and acrylate polymers containing pendant or backbone unsaturation,
- 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
A sulfide-linked photoinitiator formed by reacting an unsaturated compound with a compound having the following structure:
A sulfide-linked photoinitiator having the following structure:
Dependencies are inferred from the claim text.