Patent ID: 8809461
Filing Date: 2014-08-19
Classification: C08L,Y10T

Abstract:
1. A multimodal propylene impact copolymer composition consisting essentially of: A. from about 85 wt % to about 98 wt % of a continuous phase having (i) a first propylene homopolymer with an MFR from greater than 0.1 g/10 min to about 1.5 g/10 min; (ii) a second propylene-based polymer having an MFR greater than the MFR of the first propylene-based polymer; (iii) the continuous phase having a polydispersity index (PI) from about 4.0 to about 6.0; B. from about 15 wt % to about 2 wt % of an elastomeric polymer dispersed in the continuous phase, the elastomeric polymer being an ethylene/propylene copolymer with from about 55 wt % to about 70 wt % units derived from ethylene; and the multimodal propylene impact copolymer composition having an MFR from about 1.5 g/10 min to about 6.0 g/10 min; a flexural modulus greater than about 240 kpsi; and a notched Izod impact strength from about 1.0 ft-lb/in to about 4.0 ft-lb/in, wherein the continuous phase is greater than about 50 wt % to about 70 wt % of the first propylene-based polymer based on the total weight of the continuous phase.