| http://www.w3.org/ns/prov#value | - Examples of photoinitiators which are useful in the present invention alone or in combination are described in U.S. Pat. No. 2,760,863 and include vicinal ketaldonyl alcohols such as benzoin, pivaloin, acyloin ethers, e.g., benzoin methyl and ethyl ethers, benzil dimethyl ketal; a-hydrocarbon-substituted aromatic acyloins, including a-methylbenzoin a-allylbenzoin and a-phenylbenzoin, others are 1-
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