Patent ID: 8604131

Claim:
A process comprising: selecting from 80 wt % to 90 wt % of a propylene-based polymer having a refractive index (n1) from 1.495 to 1.505 as measured in accordance with ASTM D 542 and a melt flow rate (MFR) measured in accordance with ASTM D 1238 230° C./2.161kg and 20 wt% to 10 wt% of an elastomer that is an ethylene-based polymer consisting of (i) a majority weight percent polymerized ethylene monomer and (ii) polymerized butene comonomer or polymerized octene comonomer, the elastomer having a refractive index (n2) from 1.470 to 1.497 as measured in accordance with ASTM D 542 and a molt index (MI) measured in accordance with ASTM D 1238 190°C./2.16kg, such that MI × 2.8 MFR is greater than 1.0 to 7.0 and |n1−n2| is from greater than or equal to 0.015 to 0.025; blending particles of the elastomer into a matrix of the propylene-based polymer; subjecting the blend to a shear rate from 8,000 sec −1 to 12,000 sec −1 to form elongated particles of the elastomer particles; and injecting the blend into a mold to form an injection molded article having a haze value less than 15% as measured in accordance with ASTM D 1003.