Formation of Multicolor Three-Dimensional Polymeric Objects by Laser InitiatedPhotopolymerization

摘要

Formation of multicolor polymeric objects by laser induced photopolymerization ofphotocurable compositions in which bleachable photoinitiators and amines are used as the initiating system is reported. The formation of a colored plastic object is from (1) a combination of photobleachable initiators (2) a photochromic material or (3) an indicator in cooperation with a photoacid generating compound used in combination with the photocuring process or thereafter. The influence of the factors affecting color formation and the photostability of the formed color polymeric film has been studied. (MM).