PHOTOACTIVATABLE NITROGEN-CONTAINING BASES BASED ON .ALPHA.-AMMONIUM KETONES, IMINIUM KETONES OR AMIDINIUM KETONES AND ARYL BORATES

摘要

This invention relates to .alpha.-ammonium ketones, iminium ketones or amidinium ketones in the form of their tetraaryl- or triarylalkylborate salts which can be photochemically converted into amines, imines or amidines as well as to a process for their preparation. This invention also relates to base-polymerisable or cross-linkable compositions comprising these .alpha.-ammonium ketones, iminium ketones or amidinium ketones in the form of their tetra- or triarylalkylborate salts, t o a process for carrying out photochemically induced, base-catalysed reactions as well as to their use as photoinitiators for base-catalysed reactions.