Addition-fragmentation agents
Assignee3M Innovative Properties Company
InventorsGuy D. Joly, Larry R. Krepski, Ann R. Fornof, Serkan Yurt, Babu N. Gaddam, Ahmed S. Abuelyaman
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Abstract
Addition-fragmentation agents of the formula are disclosed: wherein R1, R2 and R3 are each independently Z-Q-, a (hetero)alkyl group or a (hetero)aryl group with the proviso that at least one of R1, R2 and R3 is Zm-Q-, Q is a linking group have a valence of m+1; Z is an ethylenically unsaturated polymerizable group, m is 1 to 6; each X1 is independently —O— or —NR4—, where R4 is H or C1-C4 alkyl, and n is 0 or 1.
Claims19
A non-aqueous polymerizable composition comprising at least one free-radically polymerizable monomer, an initiator and an addition-fragmentation agent of the formula:
- wherein
- R1, R2 and R3 are each independently Zm-Q-, a (hetero)alkyl group or a (hetero)aryl group with the proviso that at least two of R1, R2 and R3 is Zm-Q-,
- Q is a linking group having a valence of m+1;
- Z is an ethylenically unsaturated polymerizable group,
- m is 1 to 6;
- each X1 is independently —O— or —NR4—, where R4 is H or C1-C4 alkyl, and
- n is 0 or 1.
Dependencies are inferred from the claim text.