公开(公告)号：US10696829B2

公开(公告)日：2020-06-30

申请号：US15106570

申请日：2014-12-18

申请人： SAUDI BASIC INDUSTRIES CORPORATION ,  SABIC GLOBAL TECHNOLOGIES B.V. ,  Frederico José Marques Ferreira Custodio ,  Vaidyanath Ramakrishnan ,  Franciscus Elisabeth Jacobus Essers ,  Pieter Valkier ,  Benoit Thèrése Philippe Lecouvet

发明人： Frederico José Marques Ferreira Custodio ,  Vaidyanath Ramakrishnan ,  Franciscus Elisabeth Jacobus Essers ,  Pieter Valkier ,  Benoit Thèrése Philippe Lecouvet

IPC分类号： C08L23/12

摘要： The invention relates to a heterophasic propylene copolymer comprising a matrix phase comprising a propylene polymer and a dispersed phase comprising an ethylene-α-olefin elastomer comprising ethylene and at least one C3 to C10 olefin, wherein the propylene polymer has a melt flow index of at least 200 dg/min or at least 150 dg/min as determined by IS01 133:2005 at 230° C. and 2.16 kg, wherein the propylene polymer has an intrinsic viscosity IVPP and the ethylene-α-olefin elastomer has an intrinsic viscosity IVEPR where the ratio of IVEPR/IVPP is 3-7, wherein the copolymer comprises 8-20 wt % or 20-30 wt % of the ethylene-a-olefin elastomer, wherein the ethylene-a-olefin elastomer of the dispersed phase comprises 10-55 wt % of ethylene.