Synthesis of Polysiloxanes with Functional Groups by Using Organometallic Carboxylate Catalysts

Linear polysiloxanes were synthesized by using organometallic carboxylic acid catalysts containing tin, zinc, or iron. By optimizing the amount of catalyst and the reaction temperature, polysiloxanes could be synthesized from dialkoxysilanes linked with vinyl monomers by the thiol–ene reaction. Furthermore, cross-linked polysiloxanes could be formed through interactions between the catalyst and the carboxylic acid in the monomer side chain.