Patent ID: 8445598
Filing Date: 2013-05-21
Classification: C08L

Abstract:
1. Heterophasic polypropylene resin comprising a propylene homo- or copolymer matrix (A) and an ethylene propylene rubber phase (B) dispersed within the matrix, wherein the heterophasic polypropylene resin has a fraction insoluble in p-xylene at 25° C. (XCU) with an intrinsic viscosity of 1.5 dl/g or less, determined according to DIN EN ISO 1628-1 and -3 and an amount of propylene monomer units of at least 95 mol %, and a fraction soluble in p-xylene at 25° C. (XCS) with an intrinsic viscosity of 1.5 to 3.0 dl/g, determined according to DIN EN ISO 1628-1 and -3, and an amount of propylene monomer units of 50 to 75 mol %, and a molecular weight distribution MWD of 2.5 to 3.5, and a MFR (2.16 kg, 230° C.) of more than 100 g/10 min, determined according to ISO 1133, wherein the XCU fraction is present in an amount of 70 to 90 wt % of the heterophasic polypropylene resin and the XCS fraction is present in an amount of 10 to 30 wt % of the heterophasic polypropylene resin.