13 October 2013
Year: 2013
Price: 10.00
industry, this energy transfer effect was first put to good use in the 1980’s when it was found that small additions of 2-isopropylthioxanthone (ITX) could increase the cure speed of the
aminoalkylacetophenone photoinitiators such as 2-methyl-4’-(methylthio)-2-morpholinopropiophenone (MMMP) by a considerable degree 1, 2. Since then, these systems have been studied in some detail to provide an understanding of the sensitisation process 3, 4. Very high cure speeds can be obtained by this combination. More recently, sensitisation of other systems such as the substituted benzophenones and the phosphine oxides have been explored 5, 6, 7, 8. The sensitizer-photoinitiator concept is now employed in many UV high
speed inks.

In comparison, there has been little exploration of this effect for UV coatings. By the use of simple cure tests a wide range of sensitizer-photoinitiator combinations has
been studied allowing the formulator some understanding of the possibilities in UV curing and the theoretical processes behind these combinations.
2013 Conference Sensitizer Photoinitiator Interactions Possibilities and Probabilities for UV Inks and Coatings
Author: W. Green | 11 pages

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