Book excerpt: Photochemical Processes in Polymer Chemistry-2 contains invited lectures presented at the Second IUPAC Symposium on Photochemical Processes in Polymer Chemistry held at Leuven, Belgium on June 2-4, 1976. This book contains 11 papers separated as chapters. Topics include energy transfer processes; photoinitiation of polymerization; solid-state polymerization mechanisms; photoinduced ionic polymerizations; and photoconductive polymers. This text also discusses energy transfer phenomena in high polymer systems; laser spectroscopical methods for the study of primary processes during the photodegradation; photooxidation of high polymers; and reaction selectivity and molecular association in photochemical reactions of nucleic acids and their constituents. New developments in photochromic polymers and related phenomena, as well as the design of photoreactive polymer systems for imaging processes are also explained.