992 resultados para ETHYLENE POLYMERIZATION CATALYSTS
Resumo:
A series of new macrocyclic arylates have been efficiently synthesized and unambiguously characterized by a combination of GPC, MS(FAB) and H-1 NMR. These macrocycles undergo facile ring-opening polymerization in the presence of anionic initiators to give high molecular weight polyarylates.
Resumo:
The electrochemical behavior and the charge transport of polypyrrole film prepared by self-assembly polymerization have been investigated. Ir is found that the microstructure of the film influences the electrochemical behavior of polypyrrole, and that the p-toluenesulfate (Tos(-)) ion plays avery important role in this system.