Ultraviolet-curable composition for optical disc

摘要

In high density storage of information DVDs are very popular utilising a laser with a wavelength of 650nm (CDs use a longer wavelength). Where cationic curing layers have been previously used, there is a disadvantage in stability due to the corrosive attack of the Lewis acid (generated as part of the curing process) on the light reflection layer, (usually a silver or silver alloy layer).