HALO-ALKYL SUBSTITUTED HALOGENATED POLYNUCLEAR KETONE PHOTOINITIATORS, PHOTOPOLYMERIZABLE COMPOSITIONS CONTAINING THEM AND METHOD OF PRODUCING POLYMERIC COMPOSITIONS THEREFROM

摘要

Compounds having the formula in which R1 is -CH2X, -CHX2, or -CX3; R2 is H or R1; X is C1, or Br or I; and Y is S, O, or carbonyl, are disclosed as well as their use as ultraviolet photopolymerization initiators in combination with unsaturated in monomers, e.g., acrylates.