METHOD FOR INHIBITING SCORCH IN CROSSLINKABLE COMPOSITIONS

摘要

Methods and compositions for controlling polymer crosslinking are provided. The crosslinking composition includes a crosslinkable polymer, a free radical initiator, and an amine. The amine is an alkoxyaminc or a hydroxylamine. The crosslinking composition is heated to a processing temperature. The amine undergoes a cleavage reaction at or below the processor temperature to produce nitroxyl radicals in situ. The tree radical initiator forms polymer radicals at the processing temperature. The nitroxyl radicals formed in situ cap the polymer radicals to control crosslinking.