POLYPROPYLENE THERMOPLASTIC ELASTOMER COMPOSITIONS HAVING IMPROVED PROCESSING PROPERTIES AND PHYSICAL PROPERTY BALANCE

摘要

Thermoplastic elastomer compositions having improved processability while maintaining good physical properties are prepared from a mixture of olefinic rubber and a polypropylene composition having a melt flow rate in the range of from about 0.5 to about 5 dg/min. and a molecular weight distribution Mw/Mn of greater than 5.5 up to about 20. The rubber component of the mixture may be at least partially cured by dynamic vulcanization.