Rhodium complexes as catalysts for hydrosilylation crosslinking of silicone rubber

摘要

AbstractVulcanization of silicon rubber compound based on polysiloxanes containing vinyl and Si–H groups catalyzed by RhCl(CO)22, RhCl(C2H4)22, RhCl(1,5‐COD)2, RhCl(NBD)2, RhClP(C6H5)33, and Rh(acac)3(1,5‐COD = 1,5‐cyklooktadiene, NBD = norbornadiene, acac = acetylacetonate) has been studied in dependence on the catalyst, solvent, and reaction conditions. The course of vulcanization as well as the crosslinking density of the vulcanizate and the content of sol indicate that the above catalysts are comparable to and in some cases even better than the widely used hexachloroplatin