| 摘要 |
<p>Polymerizable compositions containing compounds based on N-acylamido-piperazines are provided. Such compounds have formula (I), wherein: R?1, R2, and R3¿ are each independently selected from the group consisting of hydrogen and lower alkyl; B is a linking group selected from the group consisting of carbonyl, sulfonyl, amide, and carboxyl; n is one or zero; R4 is a radical selected from the group consisting of a higher aliphatic group (i.e. at least four carbon atoms, preferably from about 6 to about 50 carbon atoms), a substituted higher aliphatic group, an alicyclic group, a heterocyclic group, a non-benzenoid aromatic group, and a substituted aromatic group. Compositions containing these compounds which are stable against gelation can be prepared. The compound is preferably present in said composition in a major amount on a mole percent basis of the polymerizable monomers. These polymerizable compositions are useful as coatings, particularly in formulations containing a photoinitiator susceptible to ultra-violet radiation. The coating is exposed to ultra-violet radiation sufficient to cause the compound to polymerize and thus cure the coating.</p> |
