Production of maleic anhydride modified butyl rubber and use thereof

摘要

A method for producing maleic anhydride modified butyl rubber comprising reacting a halogenated butyl rubber with maleic anhydride in the presence of (i) an acid acceptor and (ii) a monofunctional hindered amine and/or monofunctional hindered phenol; which is useful for further, modifying by a nitrogen-containing heterocyclic compound to form the modified butyl rubber having the improved processability.