SYNTHESIS OF POLYMER NETWORKS CONTAINING DEGRADABLE POLYACETAL SEGMENTS

Four different routes for the production of polyacetal containing netw orks are described : (1) free radical copolymerization of alpha,omega- (meth)acrylate terminated polyacetals, (2) hydrosilylation reactions o f alpha,omega-allyl terminated poly(1,3-dioxolane) with a multifunctio nal silane, (3) modification of alpha,omega-hydroxy terminated poly(1, 3-dioxepane) through reaction with 3-isocyanatopropyltriethoxysilane a nd subsequent cross-linking under influence of H2O and (4) crosslinkin g of multifunctional hydroxy-terminated polyacetals by reaction with a diisocyanate.