Patent ID: 10208194

Abstract:
The invention relates to a composition comprising (A) a heterophasic propylene copolymer and (B) a block copolymer, wherein the heterophasic propylene copolymer consists of (a) a propylene-based matrix, wherein the propylene-based matrix consists of a propylene homopolymer and/or a propylene-α-olefin copolymer consisting of at least 70 wt % of propylene and at most 30 wt % of α-olefin, based on the total weight of the propylene-based matrix and wherein the propylene-based matrix is present in an amount of 60 to 95 wt % based on the total heterophasic propylene copolymer and (b) a dispersed ethylene-α-olefin copolymer, wherein the dispersed ethylene-α-olefin copolymer is present in an amount of 40 to 5 wt % based on the total heterophasic propylene copolymer and wherein the sum of the total amount of propylene-based matrix and total amount of the dispersed ethylene-α-olefin copolymer in the heterophasic propylene copolymer is 100 wt %, and wherein the block copolymer comprises a terminal block comprising styrene or alpha-methylstyrene and wherein the ratio of the melt flow rate of (A) the heterophasic propylene copolymer (MFIheterophasic) and the melt flow rate of (B) the block copolymer (MFIblock) is at most 50, preferably at most 40, at most 30, at most 25 or at most 20, wherein MFIheterophasic and MFIblock are measured in accordance with ISO 1133 using a 2.16 kg weight and at a temperature of 230° C.