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US 9,758,478 B2Granted
Allyl disulfide-containing addition-fragmentation oligomers
Assignee3M Innovative Properties Company
InventorsAnn R. Fornof, William H. Moser, Ahmed S. Abuelyaman, Guy D. Joly, Larry R. Krepski
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Abstract
A Addition-fragmentation oligomers containing allylic disulfide groups are described. The oligomers may be added to polymerizable compositions to provide labile crosslinks that can cleave and reform during the polymerization process.
Claims18
An addition-fragmentation oligomer of the formula:
- wherein
- RA is a (hetero)hydrocarbyl group;
- RB is each independently a (hetero)hydrocarbyl group;
- RC is each independently a (hetero)hydrocarbyl group;
- subscript a is greater than 1;
- FG1, FG2 and FG3 are each independently functional groups connected the depicted RA, RB and RC groups;
- and
- Z comprises an ethylenically unsaturated polymerizable group.
5 more elements
Dependencies are inferred from the claim text.