Synthesis of polymer networks containing degradable polyacetal segments

Four different routes for the production of polyacetal containing networks are described : (1) free radical copolymerization of α,ω-(meth)acrylate terminated polyacetals, (2) hydrosilylation reactions of α,ω-allyl terminated poly- (1,3-dioxolane) with a multifunctional silane, (3) modification of α,ω-hydroxy terminated poly(1,3-dioxepane) through reaction with 3-isocyanatopropyl-triethoxysilane and subsequent cross-linking under influence of H₂O and (4) cross-linking of multifunctional hydroxy-terminated polyacetals by reaction with a diisocyanate.