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 crosslinkable compositions comprising these alpha-ammonium ketones, iminium ketones or amidinium ketones in the form of their tetra- or triarylalkylborate salts, to a process for carrying out photochemically induced, base-catalysed reactions as well as to their use as photoinitiators for base-catalysed reactions.