CROSSLINKABLE COMPOSITIONS HAVING REDUCED SCORCH INHIBITOR MIGRATION, METHOD OF REDUCING SUCH MIGRATION, AND ARTICLES MADE THEREFROM

摘要

The instant invention is a crosslinkable composition having reduced scorch inhibitor migration, a method of reducing scorch inhibitor migration in a crosslinkable composition, and articles made therefrom. The crosslinkable composition comprises the melt blending reaction product of a crosslinkable polymer, a scorch inhibiting agent, and a migration inhibiting agent. The scorch inhibiting agent is a polar nitroxide, and the migration inhibiting agent is an organo clay capable of being exfoliated. The crosslinkable composition may further include a free radical initiator. The method of reducing scorch inhibitor migration in a crosslinkable composition includes the following steps: (1) selecting a crosslinkable polymer; (2) selecting a polar nitroxide scorch inhibiting agent; (3) selecting an organo clay capable of being exfoliated; (4) melt blending the scorch inhibiting agent and the organo clay into the crosslinkable polymer; (5) thereby at least partially exfoliating the organo clay into one or more high aspect ratio particles; and (6) thereby producing the crosslinkable composition having a reduced scorch inhibitor migration. The articles made according to instant invention include the crosslinking reaction product of the inventive crosslinkable composition.