Patent ID: 8242212
Filing Date: 2012-08-14
Classification: C08L

Abstract:
1. A method of preparing a polystyrene blend comprising: combining a first polystyrene containing composition having a first melt flow index with a second polystyrene containing composition having a second melt flow index; forming a polystyrene blend; wherein the second melt flow index is at least 2 dg/min higher that the first melt flow index; wherein the first polystyrene containing composition has a first tensile strength value and the second polystyrene containing composition has a second tensile strength value and the polystyrene blend has an expected tensile strength value; wherein the expected tensile strength value is a weighted average of the first tensile strength value and the second tensile strength value based on the amount of the first polystyrene containing composition and the second polystyrene containing composition in the polystyrene blend; and wherein the polystyrene blend has an observed tensile strength value greater than 3% above the expected tensile strength value.